Sender / signature
From Wikipedia
In case you send your emails with more than one sendername (e.g. myself@the_company.at and it_is_me@home.at ) you can create with this multiple sender identities.
These identities appear as a selectbox on the form 'send emails'.
Additional to every identity you can create a signature (e.g. your postal address or a saying), which will be attached at the end of the email.

