testing. - Barilliance

Email frequency - How often will subscribers hear from you? The truth is, any number of frequencies work if communicated well and value is provided. We've covered before how Holla uses daily deals in their retention marketing strategy to drive repeat purchases.
Types of content - Further, subscribers should know what types of content they will receive. Types of content include promotions, news, events, contests, as well as format, rich media, or ongoing series.
Value proposition - Finally, it should be clearly communicated how the reader will benefit from continuing to interact with your brand. Importantly, the welcome series ought to set the tone for how they will be rewarded.