Restrict processing to selected mail accounts

[Jan Rieke]

I use this add-on with one "catch-all" mail account and several regular mail accounts. Thus, I would like to activate just for one mail account. All mail to other accounts should be left untouched (whether or not it matches the filter).

[Anderson Nascimento Nunes]

I am not sure that I understood the issue.

In the way I use it, instead of choosing an already existing username[@example.com], I choose a name exclusive to the add-on. That way the add-on affects mainly only addresses with "username" on them and I may still use other addresses if I want.