sending unsigned email to specific recipients

[s]

Flag contacts in such a way that outbound mail will NOT be digitally signed?

--

I took the habit to routinely digitally sign my eMails. One recipient with
whom I must correspond quite frequently cannot read digitally signed eMails
(apparently his mail client thinks that the signature can be a harmful
attachment)

Would be great if a digital-signature-compatible flag could be unchecked in
the contact's profile.

If you wish to get in touch with me for additional info, please eMail at
(e-mail address removed) .

Thanks