Feature Request: Get or apply Email Signatures #2497

Is your feature request related to a problem? Please describe the problem.

At the moment, there is no API to obtain the (default) email signatures, so the user is forced to open a draft and add it manually.

Describe the solution you'd like.

We need access to the mailbox or user settings in order to retrieve all email signatures, so that new emails can be created with the corresponding signatures.

user.getMailboxSettings().getSignatures()

Additional context?

No response