Does anyone know of, or have an evaluation of the various mailing services out there. Some of the services seem useful but expensive. Some don't even have a phone number to speak to a marketing or support rep! Gotta reach out by email if you need help. (Scary if you're having a critical deadline.)
I'm emailing about 5,000 messages a month (our database consists of 3,000 subscribers) for a government agency notifying constituents of policy changes and software upgrades. So I'm not selling any product where I need payment transactions.
Please provide links to any articles, blogs which evaluate these types of services or blogs/sites which discuss these types of services. When I google, I get link farms and other oddities popping up in search results.