I've been using DeltaChat for quite a while, and it works like a charm. At one point I had to switch email provider, though: I had joined a small group chat (~

I've been using DeltaChat for quite a while, and it works like a charm. At one point I had to switch email provider, though: I had joined a small group chat (~10 participants) in DeltaChat, and although we didn't chat a lot, the number of emails and receipt-requests (and RR returns) hit the max number of outgoing emails per day.