Effective email marketing is an essential ingredient in any marketing plan. It has, for many businesses, become the most important conversion tactic for selling goods and services.

Email Service Providers (ESPs) offer tools that allow you to some pretty sophisticated campaigns, capture, follow-up and segmentation when fully employed.

I am using a fairly new curation tool called List.ly to compile, with your help, a list of the best email service providers. The current list is comprised of services that I have personally used as one time or another over the years and I would for you to add your favorites, vote the ones listed up or down, comment on and share this.

It would great if you added features and reasons why you like one or another in the comments feature to the right of each entry.

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