We have a lot of different boards/email addresses and corresponding signatures. Until now, you have to select the signature from your Gmail account for every email. You must be able to set in drag which signature is automatically drawn on which board when writing a reply. Anything else is a hindrance.

example:

Person A has these mailboxes:

@test .de

@test .ch

You must be able to store which of these two signatures is automatically set on which board when you reply.