MoinMoin currently offers two email-based services, which are explained in the following sections.
Sending Login Data
If emailing is available, the UserPreferences dialog is expanded with a field "Your email address" and a button "Spediscimi via email i miei dati". 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.
Change Notification
Any user can subscribe to changes of wiki pages by either clicking on the envelope icon 
Receiving mails (new in 1.6)
MoinMoin is able to receive mails. Mainly, you need to know what the e-mail address of the wiki is and send a mail to it. If you supply the target pagename before the wiki address (typing MyWikiPage <wiki@example.com> for example), you will get your mail into the wiki quite easily. There are a few rules for your mail:
From
We check the From: header if it is from a valid wiki user. Of course this is no real security, but maybe better than nothing.
When we create a mail overview table, we use the email address part of From: to try to lookup a wiki user account with that email address. In case we find some, we will link to his homepage from the From: column of the table. If we don't find a matching user account, we just list the realname part in the From: column.
To / Cc
To: is (as usual) made of 2 parts, like TEMPLATE <wiki@example.org>. We use the "realname" part to make up the target page name template (can contain special chars, blanks etc.) and the email address part to get it to the right destination. The simplest form of a target page name template is just a pagename like WikiSandBox.
See the example for the 2 different modes of operation.
When we create a mail overview table, we process To: and Cc: for the To: column in the same way we do it for the From: column (see above). We do not include the address of the wiki server (and if we only have the wiki server email, we just display "-").
Subject
The page name template can also be extracted (and also removed) from the first occurance of mail_import_pagename_regex within the subject.
Examples:
Subj: [[Target page name]] will work if you put it either at the beginning or the end of the subject. Subject: bla bla bla [[PageName/$date]]
The text of mails with such subject will be added to the pages
Target page name or PageName/2006-07-20T14:48:27
The full subject will also be used to build the change comment, prefixed with "Mail: "; variables are not replaced there.
Mail body
The new page content is made from old page content (if any) plus the content of the email appended at the end. Page content will never get overwritten. Mails that are sent as alternative are shown with their HTML body on the page which is processed by a HTML parser.
E-Mail attachments will get put into page attachments under the page where the content will be put. Attachments will never get overwritten. The attachments will be linked from the content page (e.g. from a list of attachments at the end).
Generated content
If requested by a leading +-sign (e.g. + PageName/), MoinMoin adds a table item to the parent page listing details about the e-mail.
Pagename generation
The placeholders $from (containing the name of the sender), $date (the date) and $subject (subject line) are supported.
The pagename is generated like explained below:
- Check if one of the mail target addrs (to, cc, ...) is in mail_import_wiki_addrs
- Process TO/SUBJECT in order as given by mail_import_pagename_search until we have found a pagename or have to give up:
- Try to get the pagename template from the target addrs, or
- Try to extract the pagename from the subject (explained above).
- If we didn't find a pagename, use mail_import_subpage_template as last resort.
- Apply mail_import_pagename_envelope to (optionally) extend the pagename.
If the pagename ends with a slash, append the configuration setting email_subpage_template (see above) to the pagename.
- Expand the pagename template to get the actual pagename.