Allow templates to be used from shared mailboxes
From shared mailboxes you can not use templates to send emails.
My proposal is that if you can use templates with shared mailboxes. If there are cases where it may not be advisable, the possibility of using or not using templates should be configurable.
J Baker commented
This makes sense, be great to have templates in a shared mailbox used by staff, rather than having them save the .otfs locally.
In OWA using a Shared Mailbox, there is a need to have multiple Signatures. My Templates is a way to create these additional signatures. Please enable My Templates add-in for Shared Mailboxes.