Hi all Thunderbird enthousiast :) In version 102, using the Lightning Calendar, when creating or editing a calendar event, how do I automatically send an email reminder(s) before the event start? I tried. But Lightning "Set up Reminders" window offers only the "Show an alert" option. The number 6 in this screenshot shows the location of this challenge at https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2023-08-07-12-50-55-b4905f.png What I need is, still in this screenshot above, 1 hour before this event starts, Lightning to automatically send an email message reminder to a preset email address(es). --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- Below is the same question as above. But with details if you're interested in those. Steps to reproduce this challenge: 1. Using Thunderbird Lightning, click on the "Event" button to create a new Calendar event 2. The "New Event" window will open 3. Using this "New Event" window above, using its "Reminder" field, select the "Custom..." option. The numbers 1 et 2 in this screenshot show this at https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2023-08-07-12-49-18-5d2120.png 5. The "Set up Reminders" window will open 6. Using this "Set up Reminders" window above, open the "Choose a Reminder Action" menu. Lightning offers only the "Show an alert" option. This screenshot shows the location of this challenge at https://assets-prod.sumo.prod.webservices.mozgcp.net/media/uploads/images/2023-08-07-12-50-55-b4905f.png 7. My question is this, 1 hour before this event starts, how to configure Lightning to automatically send an email message reminder(s) to a preset email address(es)? --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- Suggestion: • If somehow Thunderbird version 102 is not yet able to send an email alert, then this is a suggestion for a new future. I'll try to create a new suggestion at https://connect.mozilla.org/t5/ideas/idb-p/ideas Then I'll try to add the link here. • I recall that in a previous version of Thunderbird Lightning, its "Set up Reminders" window offered multiples options to choose from. Including "Show an alert" or "Send an email message". Could part of the previous Thunderbird code be recycled for Thunderbird 102? • If needed, both me and the Ubertus.org team would be happy to contribute beta testing and documentation for this new feature. Any volunteer for a patch? --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- What I tried that did not work: • Clicked on the "Choose a Reminder Action" drop down menu. Only one option is available. It reads "Display alert". • Double-checked that the calendar is a Network Calendar (CalDAV) • Double-checked that the calendar "Properties" as an email address associated to it • Added my email address to the list of Attendees. This does send email notifications. But only on Event creation or event changes. This is not what I need. What I need is, for exemple, 1 hour before an event start, send an email message to be automatically sent to a set email address(es). Assuming that during this period I leave my Thunderbird both open and connected. • Searched for add-on about email alert at https://addons.thunderbird.net/fr/thunderbird/extensions/ I found none able to send email alert before an event start. --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- --- Synonyms of calendar event email reminder: • email alert • alarm mailing • reminder action • send email reminder • thunderbird notification by email message