How often should I send emails to my customers?
The answer is as regularly as possible without ‘bombarding’ people with unwanted levels of marketing emails. The exact frequency could vary depending on the kind of business you are, but as a very general rule ‘once per month’ works very well. Many businesses follow a format of one ‘newsletter’ style email per month, then supplement that with ad-hoc, shorter ‘promotional emails’, when they have a specific offer or event.