Which email service provider does HN use?
I'm not sure if this is a crude attempt to push me into a higher subscription tier, but my company is now offline (no new signups, etc) and this problem will last at least 16-20 hours because the only people who can deal with it (or answer support emails) are asleep, at least according to the marketing people who do work 24/7.
So what are the alternatives and what experiences does HN have with them? Just to be clear, I'm looking for a basic SMTP utility that charges a reasonable subscription fee with per-mail charges for excess volume and lets me manage user mailings and unsubscribe requests. Companies with a low tolerance for spammers obviously preferred.