[stonesweep]

Regarding privacy - they don't really market this feature much, but Fastmail is one of the only email providers which lets me set up per-app per-service passwords and include ACL restrictions where possible. And you can set multiple per-app passwords for the same service with different ACLs - one can be R/O to your IMAP while another has R/W access for example.

I tested a lot of providers, many of them do not have per-app passwords at all, and the ones that do tend to only allow one per service endpoint. (note: I didn't get a chance to test Zoho, it has them listed as available but I decided against the service for other reasons)