It has earlier been mentioned that the sole purpose of crafting emails with personal flavor is to get the recipient engaged, followed by the step of opening the email. There has always been a discussion regarding what’s the decent frequency of email sending? But what I want say isn’t just frequency, it is remaining relevant. Irrelevant email communication can lead your recipient to opt out from your mailing list. Always keep note of what was previously sent to the certain segment of the subscribers, how they reacted, and what are they expecting now? Unless you achieve this good level of recipient’s engagement, and even after that, avoid sending disorganized emails. If the subscriber is engaged in up-sale discussion, and expecting to have the details of newly added module and discount pricing in the next email, keep him intact, and avoid distracting subscriber attention by sending irrelevant emails during that time.