The US-based provider, Constant Contact, has been on the market for more than 20 years and is mainly aimed at smaller companies. In addition to sending newsletters, this MailChimp alternative offers a lot of learning material for prospective e-mail marketers, although much of it is well-known information. The useful features are those that you can use to create a WordPress plugin or a custom app for your Facebook page. This opens up a lot of opportunities, especially for small businesses, to receive e-mail addresses from potential customers.
Constant Contact does not offer anything exceptional, but nevertheless, it doesn’t come cheap: for $20 a month you can write to 500 recipients. Other providers have a better price-performance ratio.