Because the IP of the SMTP server that is being used by my Gridserver account at Mediatemple is blacklisted I'm looking for an off site SMTP service to send mails from my PHP application to (verification mails, notifications, etc).
I'm using CampaignMonitor.com for mass mailings, but for all other mails I would like to use another service. I've checked out smtp.com and smtp-server.com which look okay, but maybe there are better out there? A reporting feature for undeliverables are a huge plus!
If you're willing to host your own mail server you should look at PowerMTA. It's really fast, has various APIs and excellent reporting capabilities, including for bounces.
I think it's what MailChimp.com is built upon.
You should consider SocketLabs hosted Email On-Demand smtp relay service. It has a great dashboard reporting interface and access via APIs - http://www.socketlabs.com/od
Edit Here is an example of the interface posted from http://coderjournal.com/2010/10/easy-mail-delivery-with-smtp-smart-host/
