Email is the messenger you should migrate to

Just make sure you aren't limited by the number outgoing messages.

I joined a small DeltaChat group with less than 10 participants, and the chat wasn't overly busy. But with 10 participants and outgoing return-receipts I was soon over the 400 outgoing messages per day that my email provider allowed for. To stay on DeltaChat ) had to switch email provider.

Other than that, DeltaChat works like a charm.

Part of the reason people like messaging apps is because messages are short an instant. Emails, even with optimise settings still aren’t instantaneous in the same way whats app signal or imessage is. Its also built for much longer text, which encourages lengthy messages. These factors make it feel cumbersome compared to messaging services in my opinion.

I like the idea of communicating by e-mail.

It works pretty well and no need of another app or service to do so. No lock-in other than the e-mail provider.

smtp to smtp traffic still mostly unencripted.