

I use most of them or similar alternatives, but this is the first time I hear about Migadu:
After a quick lookup: it’s a service, not an app, it’s not on the cheaper side, the smallest subscription is 19€ per year. https://www.migadu.com/pricing/
I pay for my mailbox.org email 12€ per year, I will stay with mailbox.
I never used thier webui, thunderbird on desktop and android works really well. I see migadu has extra features for the higher price, but I don’t need those. 2gb is enough for me, I backup to my server then delete old emails from the cloud