**Background: ** Right now, if someone gets an email via the Email Participants feature, they do not receive information on the origin of the email. This makes the message seem a bit cryptic, unless the organizer goes out of the way to provide a lot of contextual information in the email. Therefore, we would like to improve the situation by providing the following information to participants who receive emails from organizers: that they are receiving an email about an event, the name of the event, and the username of the organizer who is sending the message
**Acceptance Criteria:**
* Add footer text to organizer emails, which states the following:
"This email was sent by X to Y regarding Z event. If you reply to this email, your email will be sent directly to the original sender, revealing your email address to them.
To manage email preferences for user Y please visit <https://meta.wikimedia.org/wiki/Special:Mute/Y)>.