Ok, my final email provider destination seems to become https://migadu.com.
I wanted to go for it for a long time and after a couple more hours exploring their site and having a few talks with migadu team I can say it aligns with my vibe and views perfectly and will work for me in terms of limits for patch series and reviews too.
I restored the mailbox from a 1 week old backup, so this week's emails are not in my inbox. Please resend them if I haven't replied yet.