Email marketing is an important marketing tool for companies to create and maintain effective relationships with customers (McCloskey, 2006, cited in Ellis-Chadwick & Doherty, 2011) therefore it is imperative that firms get it right. According to Ellis-Chadwick & Doherty (2011), the frequency of sending emails is an important part of building customer relationships and finding a happy medium is difficult – too few could lose customers interest, whereas too many could irritate.
via Email marketing frequency: Striking the right balance. | seh32’s blog.