It opens the door for irrelevant, spammy, automated messages. Understanding that a large database of leads is required for marketing automation to have any effect on their bottom line, many marketers end up buying lists of contacts to nurture with marketing automation. The consequences of list-buying are numerous, but most importantly this spammy tactic produces incredibly low ROI. Along with the cost of buying these lists, sending unsolicited emails to people who have never requested any information from you leads to low engagement and hurts your IP address reputation, lowering your email deliverability rates.
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.