Ability to use emails and push messages in different workflows or on different places of a workflow

Some letters and messages are needed in different places.

At the moment it is not even possible to copy them.

But it wouldn't solve the problem either. Indeed, if you need to make changes, you would have to make changes in all instances of the letter.

A section with letters and messages that could be accessed from any campaign would be useful, it would save a lot of work.