Wanderlust: use GPG sign by default

Question

It is possible to manually toggle sign for a message, I wonder how it can be done for any message created?

Answer 1

Just say

(setq wl-draft-config-alist
      '((t (mime-edit-pgp-processing . '(sign)))))

See Section 7.1.4 of the Wanderlust manual, Dynamic Modification of Messages.

Answer 2

I would simply create my own function that signs and sends, and use that instead.

(I do not use wanderlust and therefore do not know all of its possibilities).