@cadey "We should stop using email" one might think why that helps.
Simple: If you communicate on other platforms with people, you have a strong _UI_ indicator it's the same account you've spoken to previously. Be it on Matrix, Discord, Signal, etc...
An account with a faked name messaging you will pop up as a new chat, so it's already kinda obvious _something_ is going on.
Email just sucks, or rather Clients do.
Some clients like gmail do sometimes indicate if a sender looks fishy tho.