In our email marketing software review roundup, we test the top email marketing tools available based on how easy it is to create emails, build subscriber lists, set auto-responders, and pull in other communication-based tools, such as social media management and web analytics software. To that end, we selected Campaigner and MailChimp as the best pure-play email marketing services. If you need a more complex tool that can build comprehensive workflows designed to automate the email marketing process, then we recommend HubSpot and Pardot, which are better served as marketing automation tools.
How many auto-responder emails should be sent? It is possible that the answer to this question will be determined by the email marketing service provider that you choose. Some email marketing service providers will only allow you to send a maximum of ten auto responder in a sequence. This is typically done to reduce spam complaints and preserve the IP that the email marketing provider is using. Most studies have shown that the ideal number for an auto-responder program will be between 12 and 15 emails. Ten is often not quite enough to convert a user, but more than fifteen increases opt-outs and spam complaints as subscribers who haven't converted then begin to become frustrated. Ultimately, the number of emails that you should send should be based on your content, its engagement level and the amount of time needed to convey it.
Treat your list well. Remember that the people you're using email to communicate with have trusted you with their email and name; they deserve your respect. Just as you deserve as a chance to convert them from customers to fans and even evangelists for your brand, people who want to talk about and share your message and get involved in any way they can.