--- layout: default title: Email Digests nav_order: 42 --- Users may opt into receiving daily (sent once every 24-hours) digests of unread headlines via email. Digests are sent out by the update daemon or if running update.php —feeds manually. At most 15 messages are sent in one batch. {: .note } > [PHPMailer plugin](https://github.com/tt-rss/tt-rss-plugin-mailer-smtp) is required to send mail under Docker. * Digests may be customized by editing ``templates/digest_template*.txt``. * You can preview your digest contents in preferences.