MailChimp

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Mailchimp may not be as well known as some of the other players in the e-mail marketing service industry, but their solution is top-notch. Plus, many users will find their "forever free" plan to suit them fine, at a price you can't argue with. (Read more)

AWeber

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AWeber is well-known to industry users, but not so much to the corporate crowd. However, if you're looking for powerful autoresponders, Aweber is the choice for you. (Read more)

Constant Contact

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Constant Contact is a familiar name when it comes to e-mail marketing services. They truly stand behind their product, offering a 60-day free trial and a strong support network. However, as you look to use additional features, be ready to pay extra. (Read more)

VerticalResponse

***1/2*

VerticalResponse is an ideal solution for most non-profits (allowing up to 10,000 emails sent per month at no cost), and every user who send infrequently (with their pay-as-you-go option). (Read more)