`force_send` is an option in `mail` core module
that allows to send an email immediately.
Handling the message w/ digest is wrong and in any case
we gonna have a digest w/out the message inside it
since is going to be deleted right after send.
A typical use case is the notification sent to new followers.
Message's body can contains styles and other stuff
that can screw the look and feel of digests' mails.
Now we sanitize it if `sanitize_msg_body` is set on the digest (default on).
When creating digest records within the context of mail composer
(and possibly other contexts) you'll have a `default_template_id`
key in the context which is going to override our safe default.
This is going to break email generation because the template
will be completely wrong and unpredictable. Lesson learned :)
Depending on the request might fail
nevertheless the website should be there to be found.
Fallback to search and use it if possible for digest' site name
Simone Orsi
Thomas Pot
OCA Transbot
oca-travis
Stéphane Bidoul (ACSONE)