diff --git a/src/structure/components/com_sportsmanager/admin.php b/src/structure/components/com_sportsmanager/admin.php
index b70b281..c783808 100644
--- a/src/structure/components/com_sportsmanager/admin.php
+++ b/src/structure/components/com_sportsmanager/admin.php
@@ -21,14 +21,14 @@ require_once JPATH_SITE . '/components/com_sportsmanager/database/init.php';
 function UhrzeitWandlerDE(string $input): string {
     // mögliche Datumsformate
     $formats = [
-        'Y-m-d H:i',  
-        'd.m.Y H:i',  
+        'Y-m-d H:i',
+        'd.m.Y H:i',
         'd.m.Y H:i:s',
     ];
 
     foreach ($formats as $format) {
         $dt = DateTime::createFromFormat($format, $input);
-        
+
         // prüfen, ob Parsing erfolgreich war UND das Datum exakt passt
         if ($dt && $dt->format($format) === $input) {
             return $dt->format('Y-m-d H:i:s');
@@ -684,15 +684,12 @@ function adminEinstellungen(): void
 	$spalte_mitglieder_zeigen = $jInput->get('spalte_mitglieder_zeigen', 0, 'INT');
 	$turnierbaum_zeigen = $jInput->get('turnierbaum_zeigen', 0, 'INT');
     $termine_beantragen = $jInput->get('termine_beantragen', 0, 'INT');
+    $enableEmailReminders = $jInput->get('enable_email_reminders', 0, 'INT');
+
     $spielerimport_persoenliche_daten_vorauswahl = $jInput->get('spielerimport_persoenliche_daten_vorauswahl', 0, 'INT');
 
     $api_push_key = $jInput->get('api_push_key', '', 'RAW');
 
-    /*
-	$twitter_benutzername = $db->escape(trim( $jInput->get('twitter_benutzername', '', 'RAW') ));
-	$twitter_kennwort = !empty($twitter_benutzername) ? $db->escape(trim( $jInput->get('twitter_kennwort', '', 'RAW') )) : "";
-   */
-
     $query = "REPLACE #__sportsmanager_einstellungen"
         . "\n SET name = 'basis_spielernr'"
         . ", wert = '$basis_spielernr'";
@@ -803,6 +800,12 @@ function adminEinstellungen(): void
         die($db->stderr(true));
     }
 
+    $query = "REPLACE #__sportsmanager_einstellungen SET name = 'enable_email_reminders', wert = '$enableEmailReminders'";
+    $db->setQuery($query);
+    if (!$db->execute()) {
+        die($db->stderr(true));
+    }
+
     redirectSportsManagerURL('&task=admin_uebersicht');
 }
 
@@ -9615,7 +9618,7 @@ function adminBegegnungenImportieren(): void
 			if ($encoding == "UTF-8")
 				echo $data[$Titelzeile['Heim']];
 			else
-				echo utf8_encode($data[$Titelzeile['Heim']]);	
+				echo utf8_encode($data[$Titelzeile['Heim']]);
 			echo "</td>";
             if ($Begegnung[$Zeile]['gast_team_id'] == "") {
                 if ($data[$Titelzeile['Gast']] == "spielfrei") {
@@ -10260,7 +10263,7 @@ function adminBegegnungenPokalrundeAuslosenForm(): void
 		if (!$db->execute()) {
 		    die($db->stderr(true));
 		}
-		
+
 		redirectSportsManagerURL('&task=admin_begegnungen&veranstaltungid=' . $veranstaltungId);
 	}
 	else{
@@ -10606,6 +10609,7 @@ function adminEditTurnier(): void
     $turnierort = $db->escape(trim($jInput->get('turnierort', '', 'RAW')));
     $erster_tag = normalisiertesDatum(sprintf("%04d-%02d-%02d", $jInput->get('erster_tag_jahr', 2000, 'INT'), $jInput->get('erster_tag_monat', 1, 'INT'), $jInput->get('erster_tag_tag', 1, 'INT')));
     $mehrtaegig = $jInput->get('mehrtaegig', 0, 'INT');
+    $reminder_count = $jInput->get('reminder_count', 0, 'INT');
     if (!$mehrtaegig)
         $letzter_tag = $erster_tag;
     else
@@ -10629,7 +10633,20 @@ function adminEditTurnier(): void
     }
 
     if ($id == 0) {
-        $query = "INSERT INTO #__sportsmanager_turnier (veranstalter_id, turnierbezeichnung, saison_id, turnierort, erster_tag" . ($letzter_tag != null ? ", letzter_tag" : "") . ", kategorie) VALUES ('$veranstalterId', '$turnierbezeichnung', '$saison_id', '$turnierort', '$erster_tag'" . ($letzter_tag != null ? ", '$letzter_tag'" : "") . ", '$kategorie');";
+        $query = $db->getQuery(true)
+            ->select('wert')
+            ->from('#__sportsmanager_einstellungen')
+            ->where('name = ' . $db->quote('enable_email_reminders'));
+        $remindersEnabled = loadResult($db, $query);
+
+        $query = "INSERT INTO #__sportsmanager_turnier (veranstalter_id, turnierbezeichnung, saison_id, turnierort, erster_tag"
+            . ($letzter_tag != null ? ", letzter_tag" : "")
+            . ", kategorie, reminder_count) VALUES ('$veranstalterId', '$turnierbezeichnung', '$saison_id', '$turnierort', '$erster_tag'"
+            . ($letzter_tag != null ? ", '$letzter_tag'" : "")
+            . ", '$kategorie', "
+            . (!$remindersEnabled ? "'3'" : "'0'")
+            . ")";
+
         $db->setQuery($query);
         if (!$db->execute()) {
             die($db->stderr(true));
@@ -10643,7 +10660,8 @@ function adminEditTurnier(): void
             . "\n turnierort = '$turnierort',"
             . "\n erster_tag = '$erster_tag',"
             . "\n letzter_tag = " . ($letzter_tag != null ? "'$letzter_tag'" : "NULL") . ","
-            . "\n kategorie = '$kategorie'"
+            . "\n kategorie = '$kategorie',"
+            . "\n reminder_count = '$reminder_count'"
             . "\n WHERE turnier_id = $id";
         $db->setQuery($query);
         if (!$db->execute()) {
diff --git a/src/structure/components/com_sportsmanager/database/update.php b/src/structure/components/com_sportsmanager/database/update.php
index 712aa2d..ad54812 100644
--- a/src/structure/components/com_sportsmanager/database/update.php
+++ b/src/structure/components/com_sportsmanager/database/update.php
@@ -5300,11 +5300,11 @@ function updateDatabase(): void
 		$query = "INSERT IGNORE #__sportsmanager_einstellungen SET name = 'verband_anzeigen', wert = '1';";
 		$db->setQuery( $query );
 		if (!$db->execute()) { die($db->stderr(true)); }
-		
+
 		$query = "INSERT IGNORE #__sportsmanager_einstellungen SET name = 'turnierbaum_zeigen', wert = '0';";
 		$db->setQuery( $query );
 		if (!$db->execute()) { die($db->stderr(true)); }
-		
+
 		$query = "INSERT IGNORE #__sportsmanager_einstellungen SET name = 'spalte_mitglieder_zeigen', wert = '1';";
 		$db->setQuery( $query );
 		if (!$db->execute()) { die($db->stderr(true)); }
@@ -5331,7 +5331,7 @@ function updateDatabase(): void
 				. "\n DROP INDEX `begegnung_id`, ADD UNIQUE `begegnung_id` (`begegnung_id`) USING BTREE;";
 		$db->setQuery( $query );
 		if (!$db->execute()) { die($db->stderr(true)); }
-		
+
         $query = "UPDATE #__sportsmanager_einstellungen"
             . "\n SET wert = '108'"
             . "\n WHERE name = 'datenbank_version'";
@@ -5341,6 +5341,30 @@ function updateDatabase(): void
         }
     }
 
+    if ($datenbank_version < 109) {
+        $query = "ALTER TABLE #__sportsmanager_turnier ADD COLUMN `reminder_count` TINYINT DEFAULT '0'";
+        $db->setQuery($query);
+        if (!$db->execute()) { die($db->stderr(true)); }
+
+        // set all existing tournaments to 3 to prevent email flooding
+        $query = "UPDATE #__sportsmanager_turnier SET `reminder_count` = '3'";
+        $db->setQuery($query);
+        if (!$db->execute()) { die($db->stderr(true)); }
+
+        // 3: prevent email flood for past tournaments
+        $query = "INSERT IGNORE #__sportsmanager_einstellungen SET name = 'enable_email_reminders', wert = '0';";
+        $db->setQuery( $query );
+        if (!$db->execute()) { die($db->stderr(true)); }
+
+        $query = "UPDATE #__sportsmanager_einstellungen"
+            . "\n SET wert = '109'"
+            . "\n WHERE name = 'datenbank_version'";
+        $db->setQuery($query);
+        if (!$db->execute()) {
+            die($db->stderr(true));
+        }
+    }
+
     if ($termin_aktionen_email_setzen) {
         $query = "SELECT aktion_user_id, termin_aktion_id"
             . "\n FROM #__sportsmanager_termin_aktion";
diff --git a/src/structure/components/com_sportsmanager/sportsmanager.php b/src/structure/components/com_sportsmanager/sportsmanager.php
index 4583fd9..5d0b164 100644
--- a/src/structure/components/com_sportsmanager/sportsmanager.php
+++ b/src/structure/components/com_sportsmanager/sportsmanager.php
@@ -42,11 +42,14 @@ require_once JPATH_SITE . '/components/com_sportsmanager/views/sportsmanager/vie
 require_once JPATH_SITE . '/components/com_sportsmanager/views/sportsmanager/view_admin.php';
 require_once JPATH_SITE . '/components/com_sportsmanager/views/sportsmanager/view_ticker.php';
 require_once JPATH_SITE . '/components/com_sportsmanager/util/image.php';
+require_once JPATH_SITE . '/components/com_sportsmanager/util/email.php';
 require_once JPATH_SITE . '/components/com_sportsmanager/database/update.php'; // will also include init.php and util.php
 
 initDatabase();
 updateDatabase();
 
+sentEmailReminders();
+
 if (isset($_POST['filter_saison_id']))
     setcookie('sportsmanager_filter_saison_id', $_POST['filter_saison_id'], time() + (60 * 60 * 24));
 else if (isset($_REQUEST['filter_saison_id']))
@@ -1186,7 +1189,7 @@ function benutzerVeranstaltungModerator($veranstaltung_id = NULL): bool
         return false;
 
     $user_id = Factory::getContainer()->get(SiteApplication::class)->getIdentity()->id;
-    $query = "SELECT * FROM #__sportsmanager_berechtigt_fuer_veranstaltung INNER JOIN #__sportsmanager_veranstaltung ON veranstaltung_id = berechtigt_veranstaltung_id WHERE berechtigt_user_id = $user_id AND DATEDIFF(letzter_tag, NOW()) >= -14";
+    $query = "SELECT * FROM #__sportsmanager_berechtigt_fuer_veranstaltung INNER JOIN #__sportsmanager_veranstaltung ON veranstaltung_id = berechtigt_veranstaltung_id WHERE berechtigt_user_id = $user_id AND DATEDIFF(letzter_tag, NOW()) >= -21";
     if ($veranstaltung_id != NULL)
         $query .= " AND berechtigt_veranstaltung_id = $veranstaltung_id";
     $rows = loadObjectList($db, $query);
@@ -1204,7 +1207,7 @@ function benutzerVeranstaltungIdsModerator(): array
         return array();
 
     $user_id = Factory::getContainer()->get(SiteApplication::class)->getIdentity()->id;
-    $query = "SELECT DISTINCT veranstaltung_id FROM #__sportsmanager_berechtigt_fuer_veranstaltung INNER JOIN #__sportsmanager_veranstaltung ON veranstaltung_id = berechtigt_veranstaltung_id WHERE berechtigt_user_id = $user_id AND DATEDIFF(letzter_tag, NOW()) >= -14";
+    $query = "SELECT DISTINCT veranstaltung_id FROM #__sportsmanager_berechtigt_fuer_veranstaltung INNER JOIN #__sportsmanager_veranstaltung ON veranstaltung_id = berechtigt_veranstaltung_id WHERE berechtigt_user_id = $user_id AND DATEDIFF(letzter_tag, NOW()) >= -21";
     $rows = loadObjectList($db, $query);
 
     $ids = array();
@@ -1222,7 +1225,7 @@ function benutzerTurnierModerator($turnier_id = NULL): bool
         return false;
 
     $user_id = Factory::getContainer()->get(SiteApplication::class)->getIdentity()->id;
-    $query = "SELECT * FROM #__sportsmanager_berechtigt_fuer_turnier INNER JOIN #__sportsmanager_turnier ON turnier_id = berechtigt_turnier_id WHERE berechtigt_user_id = $user_id AND DATEDIFF(letzter_tag, NOW()) >= -14";
+    $query = "SELECT * FROM #__sportsmanager_berechtigt_fuer_turnier INNER JOIN #__sportsmanager_turnier ON turnier_id = berechtigt_turnier_id WHERE berechtigt_user_id = $user_id AND DATEDIFF(letzter_tag, NOW()) >= -21";
     if ($turnier_id != NULL)
         $query .= " AND berechtigt_turnier_id = $turnier_id";
     $rows = loadObjectList($db, $query);
diff --git a/src/structure/components/com_sportsmanager/tools.php b/src/structure/components/com_sportsmanager/tools.php
index 0aca5bd..7f6beea 100644
--- a/src/structure/components/com_sportsmanager/tools.php
+++ b/src/structure/components/com_sportsmanager/tools.php
@@ -201,7 +201,7 @@ function kategorieFilter($prefix, $suffix = ""): string
 function turnierFilter($prefix): string
 {
     $user_id = isExternalDatabase() ? 0 : Factory::getContainer()->get(SiteApplication::class)->getIdentity()->id;
-    return " " . $prefix . " (SELECT berechtigt_turnier_id FROM #__sportsmanager_berechtigt_fuer_turnier WHERE berechtigt_user_id = $user_id AND DATEDIFF(letzter_tag, NOW()) >= -14) ";
+    return " " . $prefix . " (SELECT berechtigt_turnier_id FROM #__sportsmanager_berechtigt_fuer_turnier WHERE berechtigt_user_id = $user_id AND DATEDIFF(letzter_tag, NOW()) >= -21) ";
 }
 
 function vereinFilter($prefix): string
@@ -219,7 +219,7 @@ function veranstalterFilter($prefix): string
 function veranstaltungFilter($prefix): string
 {
     $user_id = isExternalDatabase() ? 0 : Factory::getContainer()->get(SiteApplication::class)->getIdentity()->id;
-    return " " . $prefix . " (SELECT berechtigt_veranstaltung_id FROM #__sportsmanager_berechtigt_fuer_veranstaltung INNER JOIN #__sportsmanager_veranstaltung ON veranstaltung_id = berechtigt_veranstaltung_id WHERE berechtigt_user_id = $user_id AND DATEDIFF(letzter_tag, NOW()) >= -14) ";
+    return " " . $prefix . " (SELECT berechtigt_veranstaltung_id FROM #__sportsmanager_berechtigt_fuer_veranstaltung INNER JOIN #__sportsmanager_veranstaltung ON veranstaltung_id = berechtigt_veranstaltung_id WHERE berechtigt_user_id = $user_id AND DATEDIFF(letzter_tag, NOW()) >= -21) ";
 }
 
 // Berechnet Datum zum Montag der ersten Kalenderwoche eines Jahres
diff --git a/src/structure/components/com_sportsmanager/util/email.php b/src/structure/components/com_sportsmanager/util/email.php
new file mode 100644
index 0000000..4b2b5c5
--- /dev/null
+++ b/src/structure/components/com_sportsmanager/util/email.php
@@ -0,0 +1,125 @@
+<?php
+
+use Joomla\CMS\Factory;
+use Joomla\CMS\Log\Log;
+use Joomla\CMS\Mail\MailerFactoryInterface;
+use Joomla\CMS\Application\SiteApplication;
+
+/**
+ * @since 2.2
+ * @throws Exception
+ */
+function sentEmailReminders(): void
+{
+    $app = Factory::getContainer()->get(SiteApplication::class);
+    $db = getDatabase();
+
+    $query = $db->getQuery(true)
+        ->select('wert')
+        ->from('#__sportsmanager_einstellungen')
+        ->where('name = ' . $db->quote('enable_email_reminders'));
+    $row = loadResult($db, $query);
+
+    if (!$row) {
+        return; // quit when email reminders are disabled
+    }
+
+    $query = $db->getQuery(true)
+        ->select('tournament.turnier_id, tournament.turnierbezeichnung, tournament.letzter_tag, tournament.reminder_count, GROUP_CONCAT(user.email SEPARATOR ", ") as emails')
+        ->from($db->quoteName('#__sportsmanager_turnier', 'tournament'))
+        ->join('INNER', $db->quoteName('#__sportsmanager_berechtigt_fuer_turnier', 'entitled') . ' ON tournament.turnier_id = entitled.berechtigt_turnier_id')
+        ->join('INNER', $db->quoteName('#__users', 'user') . ' ON entitled.berechtigt_user_id = user.id')
+        ->where('tournament.reminder_count < 3')
+        ->group('tournament.turnier_id, tournament.turnierbezeichnung');
+    $rows = loadObjectList($db, $query);
+
+    if(!empty($rows)) {
+        $mailFrom = $app->getCfg('mailfrom');
+        $fromName = $app->getCfg('fromname');
+
+        $mailer = Factory::getContainer()->get(MailerFactoryInterface::class)->createMailer();
+        $mailer->setSender($mailFrom, $fromName);
+        foreach ($rows as $row) {
+            $currentReminder = $row->reminder_count + 1;
+
+            if (hasResultsAlready($db, $row)) {
+                updateDBReminders($db, $row, 3); // do not sent any more reminders
+                continue;
+            }
+
+            if (!isset($row->emails) || $row->emails == "" || $row->emails == NULL) {
+                Log::add('can\'t sent ' . $currentReminder .'. email reminder for tournament ' . $row->turnierbezeichnung . ': no recipient set', Log::WARNING, 'com_sportsmanager');
+                continue;
+            }
+
+            $now = new DateTime();
+            $last_day = new DateTime($row->letzter_tag);
+            $last_day->modify('+1 day'); // start to count at the end of the day, not at the beginning
+            $diff = $now->getTimestamp() - $last_day->getTimestamp();
+
+            $reminderDelays = [
+                1 => 24*60*60,       // 24h
+                2 => 3*24*60*60,     // 3d
+                3 => 13*24*60*60     // 13d
+            ];
+
+            foreach ($reminderDelays as $count => $delay) {
+                if ($diff >= $delay && $row->reminder_count < $count) {
+                    $subject = ($row->reminder_count == 2 ? "Letzte " : "") . "Erinnerung: " . $row->turnierbezeichnung . " Ergebnisse einreichen!";
+                    $body = "Hi,"
+                        . "\n\nDies ist die " . $currentReminder . ". " . ($row->reminder_count == 2 ? "*und damit letzte* " : "") . "Erinnerung die Turnierergebnisse einzureichen."
+                        . "\n\nTurnier: " . $row->turnierbezeichnung
+                        . "\nTurnierende: " . FormatiertesDatum($row->letzter_tag, false, false)
+                        . "\n\nLaut Turnierordnung müssen die Ergebnisse spätestens 24 Stunden nach Turnierende eingetragen werden. Bitte reich die Ergebnisse umgehend nach."
+                        . "\n\nDu erhältst diese Mail, weil du als Berechtigter für das Turnier eingetragen wurdest. Falls du nicht der Veranstalter bist, leite diese Email bitte entsprechend weiter."
+                        . "\n\nHochladen der Ergebnisse über " . SportsManagerURL('&task=admin_turnierdisziplinen&turnierid=' . $row->turnier_id, -1) . ".";
+
+                    $mailer->setSubject($subject);
+                    $mailer->setBody($body);
+
+                    $emailArray = explode(", ", $row->emails);
+                    foreach ($emailArray as $email) {
+                        $mailer->addBcc($email);
+                    }
+                    $mailer->send();
+
+                    updateDBReminders($db, $currentReminder, $row->turnier_id);
+                }
+            }
+        }
+    }
+}
+
+function updateDBReminders($db, $reminder, $tournamentId): void
+{
+    $query = $db->getQuery(true)
+        ->update($db->quoteName('#__sportsmanager_turnier'))
+        ->set($db->quoteName('reminder_count') . ' = ' . $db->quote($reminder))
+        ->where($db->quoteName('turnier_id') . ' = ' . $db->quote($tournamentId));
+
+    $db->setQuery($query);
+    $db->execute();
+}
+
+/**
+ * checks if a tournament has at least one result entry for a discipline
+ * @param $db
+ * @param $row mixed tournament entry
+ * @return bool true if at least one result is given, else false
+ * @since 2.2
+ */
+function hasResultsAlready($db, mixed $row): bool
+{
+    $subQuery = $db->getQuery(true)
+        ->select($db->quoteName('turnierdisziplin_id'))
+        ->from($db->quoteName('#__sportsmanager_turnierdisziplin'))
+        ->where($db->quoteName('turnier_id') . ' = ' . $db->quote($row->turnier_id));
+
+    $query = $db->getQuery(true)
+        ->select('COUNT(*) AS count')
+        ->from($db->quoteName('#__sportsmanager_turniermeldung', 'tm'))
+        ->where($db->quoteName('tm.turnierdisziplin_id') . ' IN (' . $subQuery . ')');
+
+    $result = loadResult($db, $query);
+    return $result && $result[0]->count > 0;
+}
diff --git a/src/structure/components/com_sportsmanager/views/sportsmanager/view_admin.php b/src/structure/components/com_sportsmanager/views/sportsmanager/view_admin.php
index bc7a059..ab99e95 100644
--- a/src/structure/components/com_sportsmanager/views/sportsmanager/view_admin.php
+++ b/src/structure/components/com_sportsmanager/views/sportsmanager/view_admin.php
@@ -737,8 +737,9 @@ class HTML_sportsmanager_admin
                                         </td>
                                         <td nowrap>
                                             <input style='height: 34px;' class="uk-select uk-form-width-medium" type="text"
+                                                   id="show_member_count"
 											value= <?php echo $einstellungen["anzahl_mitglieder_zeigen"]; ?>
-											id="show_member_count" name="anzahl_mitglieder_zeigen" placeholder="Zahl eingeben">
+											name="anzahl_mitglieder_zeigen" placeholder="Zahl eingeben">
                                         </td>
                                     </tr>
                                     <tr>
@@ -876,6 +877,22 @@ class HTML_sportsmanager_admin
                                             </select>
                                         </td>
                                     </tr>
+                                    <tr>
+                                        <td nowrap style="width: 20%; text-align: right">
+                                            <label
+                                                for="enable_email_reminders"><?php echo Text::_('COM_SPORTSMANAGER_USE_EMAIL_REMINDERS'); ?>
+                                                :</label>
+                                        </td>
+                                        <td nowrap>
+                                            <select class="uk-select uk-form-width-medium" name="enable_email_reminders"
+                                                    id="enable_email_reminders" size="1">
+                                                <?php
+                                                echo "<option value='1'" . (isset($einstellungen['enable_email_reminders']) && $einstellungen['enable_email_reminders'] == 1 ? " selected" : "") . ">" . htmlentities_utf8(Text::_('JYES')) . "</option>";
+                                                echo "<option value='0'" . (isset($einstellungen['enable_email_reminders']) && $einstellungen['enable_email_reminders'] == 0 ? " selected" : "") . ">" . htmlentities_utf8(Text::_('JNO')) . "</option>";
+                                                ?>
+                                            </select>
+                                        </td>
+                                    </tr>
                                     <tr>
                                         <td nowrap colspan="2">&nbsp;
 
@@ -11369,20 +11386,6 @@ class HTML_sportsmanager_admin
             class="componentheading<?php echo $params->get('pageclass_sfx'); ?>"><?php echo Text::_('COM_SPORTSMANAGER_TOURNAMENT'); ?>
             : <?php echo($row != null ? ($vorlage ? Text::_('COM_SPORTSMANAGER_ADD_VIA_TEMPLATE') : Text::_('COM_SPORTSMANAGER_CHANGING')) : Text::_('COM_SPORTSMANAGER_ADD')); ?></div>
 
-        <script type="text/javascript">
-            function letzter_tag_anzeigen() {
-                if (document.getElementById("row_letzter_tag").style.display !== '') {
-                    document.getElementById("row_letzter_tag").style.display = '';
-                    document.getElementById("button_mehrtaegig").value = 'Eintägig'
-                    document.adminForm.mehrtaegig.value = 1;
-                } else {
-                    document.getElementById("row_letzter_tag").style.display = 'none';
-                    document.getElementById("button_mehrtaegig").value = 'Mehrtägig'
-                    document.adminForm.mehrtaegig.value = 0;
-                }
-            }
-        </script>
-
         <form action="<?php echo SportsManagerURL(); ?>" method="post" name="adminForm" id="adminForm">
             <div class="uk-overflow-auto">
                 <table class="uk-table" style="width: 100%">
@@ -11565,8 +11568,8 @@ class HTML_sportsmanager_admin
                                                         <td nowrap>
                                                             <select class="uk-select uk-form-width-medium"
                                                                     name="berechtigt_fuer_turnier_user_<?php echo $nummer; ?>_id"
-                                                                    aria-label="<?php echo Text::_('COM_SPORTSMANAGER_ARIA_LABEL_ELIGIBLE_USER'); ?>"
-                                                                    size="1">
+                                                                    id="eligible_for_tournament_<?php echo $nummer; ?>_id"
+                                                                    aria-label="<?php echo Text::_('COM_SPORTSMANAGER_ARIA_LABEL_ELIGIBLE_USER'); ?>">
                                                                 <option value="0"></option>
                                                                 <?php
                                                                 foreach ($users as $user)
@@ -11579,6 +11582,7 @@ class HTML_sportsmanager_admin
                                                     }
                                                     ?>
                                                 </tr>
+                                                <tr id='eligible_for_tournament-error'></tr>
                                             </table>
                                         </td>
                                     </tr>
@@ -11595,14 +11599,51 @@ class HTML_sportsmanager_admin
             </div>
 
             <input type="submit" name="save" value="<?php echo Text::_('COM_SPORTSMANAGER_SAVE'); ?>" class="button"/>
-            <input type="submit" name="cancel" value="<?php echo Text::_('COM_SPORTSMANAGER_CANCEL'); ?>"
+            <input type="button" name="cancel" value="<?php echo Text::_('COM_SPORTSMANAGER_CANCEL'); ?>"
+                   onclick="window.location.href='<?php echo SportsManagerURL(); ?>'"
                    class="button"/>
             <input type="hidden" name="task" value="admin_turnier_save"/>
             <input type="hidden" name="id" value="<?php echo($row != null ? $row->turnier_id : "0"); ?>"/>
             <input type="hidden" name="vorlage" value="<?php echo $vorlage; ?>"/>
             <input type="hidden" name="mehrtaegig"
                    value="<?php echo !empty($row) && $row->erster_tag != $row->letzter_tag ? "1" : "0"; ?>"/>
+            <input type="hidden" name="reminder_count"
+                   value="<?php echo !empty($row) ? $row->reminder_count : "0"; ?>"/>
         </form>
+
+        <script type="text/javascript">
+            function letzter_tag_anzeigen() {
+                if (document.getElementById("row_letzter_tag").style.display !== '') {
+                    document.getElementById("row_letzter_tag").style.display = '';
+                    document.getElementById("button_mehrtaegig").value = 'Eintägig'
+                    document.adminForm.mehrtaegig.value = 1;
+                } else {
+                    document.getElementById("row_letzter_tag").style.display = 'none';
+                    document.getElementById("button_mehrtaegig").value = 'Mehrtägig'
+                    document.adminForm.mehrtaegig.value = 0;
+                }
+            }
+
+            document.getElementById('adminForm').addEventListener('submit', function(e) {
+                // Get all selects
+                const selects = this.querySelectorAll('[id^="eligible_for_tournament_"]');
+                let valid = false;
+
+                // Check if at least one has a value
+                selects.forEach(select => {
+                    if (select.value !== '0') {
+                        valid = true;
+                    }
+                });
+
+                if (!valid) {
+                    e.preventDefault(); // Stop form submission
+                    document.getElementById('eligible_for_tournament-error').innerHTML = "<td colspan='2' style='color: red'>Please select at least one organizer.</td>";
+                } else {
+                    document.getElementById('eligible_for_tournament-error').innerHTML = ""; // Clear error
+                }
+            });
+        </script>
         <?php
     }
 
diff --git a/src/structure/language/de-DE/de-DE.com_sportsmanager.ini b/src/structure/language/de-DE/de-DE.com_sportsmanager.ini
index 0995874..c4a9e34 100644
--- a/src/structure/language/de-DE/de-DE.com_sportsmanager.ini
+++ b/src/structure/language/de-DE/de-DE.com_sportsmanager.ini
@@ -1,4 +1,4 @@
-; Sports Manager (C) 2006-2020, Sven Nickel (Test)
+; Sports Manager (C) 2006-2020, Sven Nickel (Test)
 COM_SPORTSMANAGER="Sports Manager"
 COM_SPORTSMANAGER_PLAYERS="Spieler"
 COM_SPORTSMANAGER_CLUBS="Vereine"
@@ -1013,3 +1013,4 @@ COM_SPORTSMANAGER_ARIA_LABEL_CLUB="Verein"
 COM_SPORTSMANAGER_NUM_REQUESTED_SHIFTS="Verschiebungen"
 COM_SPORTSMANAGER_NUM_REQUESTED_SHFITS_TOOLTIP="Spielverschiebungen durch diese Mannschaft"
 COM_SPORTSMANAGER_GAME_RESULT_DELAYS="Verzögerung"
+COM_SPORTSMANAGER_USE_EMAIL_REMINDERS="Verwende Email Erinnerungen"
diff --git a/src/structure/language/en-GB/en-GB.com_sportsmanager.ini b/src/structure/language/en-GB/en-GB.com_sportsmanager.ini
index ba49298..2d5ac40 100644
--- a/src/structure/language/en-GB/en-GB.com_sportsmanager.ini
+++ b/src/structure/language/en-GB/en-GB.com_sportsmanager.ini
@@ -1,4 +1,4 @@
-; Sports Manager (C) 2006-2020, Sven Nickel
+; Sports Manager (C) 2006-2020, Sven Nickel
 COM_SPORTSMANAGER="Sports Manager"
 COM_SPORTSMANAGER_PLAYERS="Players"
 COM_SPORTSMANAGER_CLUBS="Clubs"
@@ -1011,3 +1011,4 @@ COM_SPORTSMANAGER_ARIA_LABEL_CLUB="Club"
 COM_SPORTSMANAGER_NUM_REQUESTED_SHIFTS="Shifts"
 COM_SPORTSMANAGER_NUM_REQUESTED_SHFITS_TOOLTIP="Game shifts caused by this team"
 COM_SPORTSMANAGER_GAME_RESULT_DELAYS="Delay"
+COM_SPORTSMANAGER_USE_EMAIL_REMINDERS="Use email reminders"
diff --git a/src/structure/script.php b/src/structure/script.php
index 5fbe9db..ce72cd8 100644
--- a/src/structure/script.php
+++ b/src/structure/script.php
@@ -905,6 +905,7 @@ return new class () implements InstallerScriptInterface
 		. "\n  `erster_tag` date NOT NULL DEFAULT '0000-00-00',"
 		. "\n  `letzter_tag` date DEFAULT NULL,"
 		. "\n  `kategorie` tinyint(4) DEFAULT '1',"
+		. "\n  `reminder_count` tinyint DEFAULT '0',"
 		. "\n  PRIMARY KEY (`turnier_id`),"
 		. "\n  KEY `saison_id` (`saison_id`),"
 		. "\n  KEY `veranstalter_id` (`veranstalter_id`)"
@@ -1117,7 +1118,7 @@ return new class () implements InstallerScriptInterface
 		$db->setQuery( $query );
 		if (!$db->execute()) { die($db->stderr(true)); }
 
-		$query = "INSERT IGNORE #__sportsmanager_einstellungen SET name = 'datenbank_version', wert = '107';";
+		$query = "INSERT IGNORE #__sportsmanager_einstellungen SET name = 'datenbank_version', wert = '108';";
 		$db->setQuery( $query );
 		if (!$db->execute()) { die($db->stderr(true)); }
 
@@ -1144,15 +1145,19 @@ return new class () implements InstallerScriptInterface
 		$query = "INSERT IGNORE #__sportsmanager_einstellungen SET name = 'verband_anzeigen', wert = '1';";
 		$db->setQuery( $query );
 		if (!$db->execute()) { die($db->stderr(true)); }
-		
+
 		$query = "INSERT IGNORE #__sportsmanager_einstellungen SET name = 'turnierbaum_zeigen', wert = '0';";
 		$db->setQuery( $query );
 		if (!$db->execute()) { die($db->stderr(true)); }
-		
+
 		$query = "INSERT IGNORE #__sportsmanager_einstellungen SET name = 'spalte_mitglieder_zeigen', wert = '1';";
 		$db->setQuery( $query );
 		if (!$db->execute()) { die($db->stderr(true)); }
-		
+
+		$query = "INSERT IGNORE #__sportsmanager_einstellungen SET name = 'enable_email_reminders', wert = '0';";
+		$db->setQuery( $query );
+		if (!$db->execute()) { die($db->stderr(true)); }
+
 		$query = "INSERT INTO #__sportsmanager_verschieberegel (bezeichnung, initial_ohne_termin, keine_gegenvorschlaege, vorlaufzeit_tage, termine_minimal, termine_maximal, ablehnen)"
 		. "\n VALUES ('Beliebig', '0', '0', '0', '1', '3', '0');";
 		$db->setQuery($query);