Draft made with another mail on another devixe

Is it correct that eM Client on my MacBookAir can not edit a draft that was made with another mailapp (not Gmail; Edison Mail) on my iPhone? But a draft made with eM Client IOS on my iPhone can edit a draft.

You can edit draft emails that were made with other mail clients as long as they are using “standard html”. Mac Mail for example uses some non standard formatting so can sometimes look different if you then edit that draft in eM Client.

To be more precise: I can not do anything in a draft made on my iPhone in eM on my MacBook. Nothing, I can only look at it. Also with drafts made in eM for iPhone (IOS version).

It does not look different, that is not the problem…

Update: after a restart I can edit drafts; hickup of eM i gues…