When I type
/me does something it gets rendered as
* Aminda does something like on IRC, XMPP, Matrix, some Discord clients (that turn it to
*does something* instead) etc. like it was describing what I am doing as sender in third person.
/me does something appears just like that, without special rendering.
/me handling is entirely clientside while the protocol message is just
/me does something (and that is one of the many things I love about XMPP). I think it could be copied to DeltaChat if not just converting it clientside.