The success of daily deal email illustrates this. Customers gain value from a ‘daily deal' email and will come to anticipate the email in their inbox every morning. Tagging links in ‘daily deal’ emails will tell you a lot about the journeys within a given customer profile, as well as about preferences and behaviours. The ultimate sell is not important – what you are doing with ‘daily deal' (or ‘weekly tips') email content is building a relationship with your customers and learning more about how journeys within your brand work. All this information is important and can be put to use on later campaigns.
When it comes to deciding how to craft that perfect subject line, there appears to be really only one area to avoid: the subject line of 60 to 70 characters. Marketers refer to this as the “dead zone” of subject length. According to research by Adestra, which tracked over 900 million emails for its report, there is no increase in either open rate or clickthroughs at this 60-to-70 character length of subject line.