I've been a SpamCop user for several years now and I've always just used an SMTP server on my local box. However, I've found that some recipients' ISPs are blocking incoming mail from ip addresses which don't resolve to a domain (which would include me, since I'm on a cable modem).
So, to avoid that, I'm looking into an SMTP provider. Sure, I could use my ISP's SMTP server, but I travel and I need SMTP service for that as well. I've seen JeffG's SMTP-Auth Provider Status Report and I think that's a good starting point. However, after eliminating the ones with "reliability problems" and those that aren't accepting new accounts, there aren't many left .
DynDNS's MailHop Outbound seems to fit the bill and $14.95 is fairly reasonable. Has anyone tried that one? And are there any others that I should consider as well?