"Stephen" == Stephen Daniel <swd@pobox.com> writes:
Stephen> So I have to run this in "the Stephen> cloud". I choose Google's cloud for various reasons. They Stephen> both forbid and block any attempt to operate an MTA. I Stephen> assume other cloud vendors do too. Since I cannot run my own Stephen> MTA I feel a bit stuck.
I run mailman3 in a VPS that costs around $110 per year. I chose one near to me (in Sydney, Australia); for ease of admin, you need to choose something with low latency to where you're administering it.
The main issue with running your own MTA is it's likely to have relatively low volume, and Google and Microsoft will show it as having a poor reputation until they've seen a certain amount of traffic from it --- and drop or bounce email.
Peter C