Earlier quoted context omitted.
I think the deliverability issues boil down to i) IP, ii) domain age, iii) DKIM setup. The only one that is difficult to get around is i) I suppose; I am fortunate enough to have access to a clean IPv4 in a non-residential block. If you are facing deliverability issues, consider a relay service such as mailgun. That being said, I mostly receive email, and the privacy benefits of running my own server would still be s…
Thanks for that answer. Re: the privacy benefits, is it just that Google (or whoever) has no access to your mail, or is there another benefit? I'm not doubting, just trying to understand specifically what you protect against? And how much is the benefit diminished, if at all, if most of your correspondents are on a BigMailServer?
Besides privacy, running your own server means you can create as many mailboxes/aliases as you like. I give each website/company a distinct alias; this allows me to revoke an alias that becomes problematic, e.g. due to spam. There are no storage limits other than those dictated by your hardware, no maximum attachment size, etc. I am immune to "terms and conditions" changing overnight that suddenly shrink my storage or put features such as IMAP access behind a paywall.