Enabling Email Support
In order to enable email support, you must specify the From: address with "mail_from". Furthermore, you must enable a transport, either by SMTP (use "mail_smarthost" to enable it) or by sendmail (use "mail_sendmail" to enable it). If you use "mail_smarthost" and the server requires authentication, then set "mail_login", too.
- mail_from
This value is used for the "From:" and "To:" headers in the emails sent (the "To:" has email address privacy reasons, email is not really sent to this address, but we don't want to disclose any real recipient address).
- mail_smarthost
This is the IP or domain name of an FOLDOC:SMTP enabled server. On a Unix host, you can try to use localhost; on a Windows machine this will normally be a machine in your LAN or some host of your ISP.
- mail_login
This is only needed when you use mail_smarthost and a server that requires SMTP AUTH to send mail; in that case, set this to the username and password separated by a space, i.e. "user pwd".
- mail_sendmail
- This is a local command to run to send a message. If set to e.g. '/usr/sbin/sendmail -t -i', use this sendmail command to send mail. This is only useful on machines that have a mail transport agent installed.
See also HelpOnConfiguration.
Email Features
MoinMoin currently offers two email-based services, which are explained in the following sections.
1. Sending Login Data
If emailing is available, the UserPreferences dialog is expanded with a field "Your email address" and a button " Mail me my account data ". The user can enter the email address he provided at registration and then gets an email containing all necessary data to re-login, after clicking the button.
2. Change Notification
Any user can subscribe to changes of wiki pages by either clicking on the envelope icon 
, or by adding a regex to the "Subscribed wiki pages" field of his UserPreferences. The system then sends, whenever a page is changed and the author doesn't uncheck the "Send mail notification" checkbox, an email with the author, a link to the page, and the diff of the change. The author does not get notified of his own changes.