diff --git a/xExtension-ShareByEmail/Controllers/shareByEmailController.php b/xExtension-ShareByEmail/Controllers/shareByEmailController.php
index 77d08fca..d721a737 100644
--- a/xExtension-ShareByEmail/Controllers/shareByEmailController.php
+++ b/xExtension-ShareByEmail/Controllers/shareByEmailController.php
@@ -57,6 +57,9 @@ public function shareAction(): void {
 			Minz_View::appendStyle($this->extension->getFileUrl('shareByEmail.css'));
 		}
 		$this->view->to = '';
+		if ($this->extension instanceof ShareByEmailExtension) {
+			$this->view->to = htmlspecialchars($this->extension->getDefaultRecipient(), ENT_COMPAT, 'UTF-8');
+		}
 		$this->view->subject = _t('shareByEmail.share.form.subject_default');
 		$this->view->content = _t(
 			'shareByEmail.share.form.content_default',
diff --git a/xExtension-ShareByEmail/README.md b/xExtension-ShareByEmail/README.md
index d1a0ffb2..6acac455 100644
--- a/xExtension-ShareByEmail/README.md
+++ b/xExtension-ShareByEmail/README.md
@@ -12,8 +12,11 @@ After the installation the `Email` sharing service will added to the list of ava
 
 You will have to configure the mailing system in FreshRSS. [See the documentation](https://freshrss.github.io/FreshRSS/en/admins/05_Configuring_email_validation.html#configure-the-smtp-server)
 
+Optionally, you can set a default recipient in the extension configuration, which will prefill the “To” field of the sharing form.
+
 ## Changelog
 
+- 0.5.0 Optional default recipient to prefill the sharing form
 - 0.3.2 With the new feature, Turkish language deficiencies have been corrected.
 - 0.3.0 detail information about the mail system shown in the extension config
 - 0.2.3 Turkish language support added
diff --git a/xExtension-ShareByEmail/configure.phtml b/xExtension-ShareByEmail/configure.phtml
index ac30a38b..c8291b65 100644
--- a/xExtension-ShareByEmail/configure.phtml
+++ b/xExtension-ShareByEmail/configure.phtml
@@ -1,5 +1,6 @@
 <?php
 declare(strict_types=1);
+/** @var ShareByEmailExtension $this */
 ?>
 
 <div class="form-group">
@@ -15,3 +16,31 @@ declare(strict_types=1);
 		<p class="help"><?= _i('help') ?> <?= _t('shareByEmail.share.manage.help') ?></a></p>
 	</div>
 </div>
+
+<form action="<?= _url('extension', 'configure', 'e', urlencode($this->getName())) ?>" method="post" data-auto-leave-validation="1">
+	<input type="hidden" name="_csrf" value="<?= FreshRSS_Auth::csrfToken() ?>" />
+
+	<div class="form-group">
+		<label class="group-name" for="share_by_email_default_recipient">
+			<?= _t('shareByEmail.share.manage.default_recipient') ?>
+		</label>
+		<div class="group-controls">
+			<input
+				type="email"
+				name="share_by_email_default_recipient"
+				id="share_by_email_default_recipient"
+				class="long"
+				placeholder="alice@example.net"
+				value="<?= htmlspecialchars($this->getDefaultRecipient(), ENT_COMPAT, 'UTF-8') ?>"
+			/>
+			<p class="help"><?= _i('help') ?> <?= _t('shareByEmail.share.manage.default_recipient_help') ?></p>
+		</div>
+	</div>
+
+	<div class="form-group form-actions">
+		<div class="group-controls">
+			<button type="submit" class="btn btn-important"><?= _t('gen.action.submit') ?></button>
+			<button type="reset" class="btn"><?= _t('gen.action.cancel') ?></button>
+		</div>
+	</div>
+</form>
diff --git a/xExtension-ShareByEmail/extension.php b/xExtension-ShareByEmail/extension.php
index 48a32c11..a7707ed8 100644
--- a/xExtension-ShareByEmail/extension.php
+++ b/xExtension-ShareByEmail/extension.php
@@ -25,9 +25,42 @@ public function init(): void {
 		spl_autoload_register(array($this, 'loader'));
 	}
 
+	/**
+	 * @throws FreshRSS_Context_Exception
+	 */
 	#[\Override]
 	public function handleConfigureAction(): void {
 		$this->registerTranslates();
+
+		if (Minz_Request::isPost()) {
+			$defaultRecipient = Minz_Request::paramString('share_by_email_default_recipient', plaintext: true);
+			if ($defaultRecipient !== '' && !self::isValidEmailAddress($defaultRecipient)) {
+				Minz_Request::bad(_t('user.email.feedback.invalid'), [
+					'c' => 'extension',
+					'a' => 'configure',
+					'params' => [
+						'e' => $this->getName(),
+					],
+				]);
+				return;
+			}
+			FreshRSS_Context::userConf()->_attribute('share_by_email_default_recipient', $defaultRecipient);
+			FreshRSS_Context::userConf()->save();
+		}
+	}
+
+	/**
+	 * @throws FreshRSS_Context_Exception
+	 */
+	public function getDefaultRecipient(): string {
+		return FreshRSS_Context::userConf()->attributeString('share_by_email_default_recipient') ?? '';
+	}
+
+	private static function isValidEmailAddress(string $email): bool {
+		$mailer = new PHPMailer\PHPMailer\PHPMailer();
+		$mailer->CharSet = 'utf-8';
+		$punyemail = $mailer->punyencodeAddress($email);
+		return PHPMailer\PHPMailer\PHPMailer::validateAddress($punyemail, 'html5');
 	}
 
 	public function loader(string $class_name): void {
diff --git a/xExtension-ShareByEmail/i18n/de/shareByEmail.php b/xExtension-ShareByEmail/i18n/de/shareByEmail.php
index d8961df8..0c2eea1b 100755
--- a/xExtension-ShareByEmail/i18n/de/shareByEmail.php
+++ b/xExtension-ShareByEmail/i18n/de/shareByEmail.php
@@ -19,6 +19,8 @@
 		'intro' => 'Diesen Artikel per Mail versenden: “<strong>%s</strong>”',
 		'title' => 'Einen Artikel per Mail teilen.',
 		'manage' => [
+			'default_recipient' => 'Standard-Empfänger',
+			'default_recipient_help' => 'Füllt das Feld „An“ beim Teilen eines Artikels vor. Leer lassen, um keinen Standard-Empfänger zu verwenden.',
 			'mailer' => 'E-Mail-Versand',
 			'mail' => 'via PHP <code>mail()</code>',
 			'smtp' => 'via SMTP (versendet von %s)',
diff --git a/xExtension-ShareByEmail/i18n/en/shareByEmail.php b/xExtension-ShareByEmail/i18n/en/shareByEmail.php
index 49c8784c..8ae22f38 100644
--- a/xExtension-ShareByEmail/i18n/en/shareByEmail.php
+++ b/xExtension-ShareByEmail/i18n/en/shareByEmail.php
@@ -19,6 +19,8 @@
 		'intro' => 'You are about to share this article by email: “<strong>%s</strong>”',
 		'title' => 'Share an article by email',
 		'manage' => [
+			'default_recipient' => 'Default recipient',
+			'default_recipient_help' => 'Prefills the “To” field when sharing an article. Leave empty to have no default recipient.',
 			'mailer' => 'Mailing system',
 			'mail' => 'PHP <code>mail()</code>',
 			'smtp' => 'SMTP (send from %s)',
diff --git a/xExtension-ShareByEmail/i18n/fr/shareByEmail.php b/xExtension-ShareByEmail/i18n/fr/shareByEmail.php
index 9343f357..4d3be13d 100644
--- a/xExtension-ShareByEmail/i18n/fr/shareByEmail.php
+++ b/xExtension-ShareByEmail/i18n/fr/shareByEmail.php
@@ -19,6 +19,8 @@
 		'intro' => 'Vous êtes sur le point de partager cet article par courriel : « <strong>%s</strong> »',
 		'title' => 'Partager un article par courriel',
 		'manage' => [
+			'default_recipient' => 'Destinataire par défaut',
+			'default_recipient_help' => 'Pré-remplit le champ « Pour » lors du partage d’un article. Laisser vide pour ne pas avoir de destinataire par défaut.',
 			'mailer' => 'Système de messagerie',
 			'mail' => 'PHP <code>mail()</code>',
 			'smtp' => 'SMTP (envoyer en tant que %s)',
diff --git a/xExtension-ShareByEmail/i18n/tr/shareByEmail.php b/xExtension-ShareByEmail/i18n/tr/shareByEmail.php
index b2cca3ff..fbcfccc4 100644
--- a/xExtension-ShareByEmail/i18n/tr/shareByEmail.php
+++ b/xExtension-ShareByEmail/i18n/tr/shareByEmail.php
@@ -19,6 +19,8 @@
 		'intro' => 'Bu makaleyi e-posta yoluyla paylaşmak üzeresiniz: “<strong>%s</strong>”',
 		'title' => 'Bir makaleyi e-posta ile paylaşın',
 		'manage' => [
+			'default_recipient' => 'Varsayılan alıcı',
+			'default_recipient_help' => 'Bir makale paylaşılırken “Kime” alanını önceden doldurur. Varsayılan alıcı istemiyorsanız boş bırakın.',
 			'mailer' => 'Mail sistemi',
 			'mail' => 'PHP <code>mail()</code>',
 			'smtp' => 'SMTP (%s kaynağından gönder)',
diff --git a/xExtension-ShareByEmail/metadata.json b/xExtension-ShareByEmail/metadata.json
index e8bba61e..3e1befc7 100644
--- a/xExtension-ShareByEmail/metadata.json
+++ b/xExtension-ShareByEmail/metadata.json
@@ -2,7 +2,7 @@
 	"name": "Share By Email",
 	"author": "Marien Fressinaud",
 	"description": "Improve the sharing by email system.",
-	"version": "0.4.0",
+	"version": "0.5.0",
 	"entrypoint": "ShareByEmail",
 	"type": "user"
 }