You may be familiar with the word "cadence" - at least, I'm sure you've heard of it in some context or another. Basically it comes down to meaning "rhythm" or "tone" when you come across it often enough.
I'm quite interested in email marketing. I've been involved in such things for a number of years now, from designing them (and providing copy) to developing email strategy for entire brands.
Recently, the term "cadence" came up in a discussion, and I was both amused and impressed. Initially, it sounds like just another marketing buzzword, but upon deeper consideration, it's actually a fairly descriptive term for some aspects of email marketing. It makes you think of rythmn and tone again, something that's very important when using email to communicate with customers.
In my opinion, cadence in this context can be broken down into the following considerations: what you say, when you say it, how you say it and who you say it to.
Depending upon who you're talking to, pulling out the most important part of (my definition of) cadence is either simple or hard. For those of us concerned with CAN SPAM, "when you say it" and "how you say it" are equally critical. "When" is also "How often" as well as trying to find the most effective timing to send the right message to the right person. Also important, from a technical point of view, is "how you say it" as this can make the difference between an email that's blocked by the email service provider and one that actually gets opened by a real person. That's where good copywriting comes into play, along with good coding. Ineffective writing and code can make an email score poorly in SPAM rating systems.
Almost equally important to "When" is "When not." With a complicated array of triggered and scheduled emails, a consumer could behave in such a way as to activate a number of automatic emails, possibly resulting in several arriving over a few hours. In the case of transactional emails, this is to be expected, but in the case of marketing pieces, it's important to set limits around the maximum number of emails a consumer can receive in the space of a day... or week.
The great thing about email strategy is that you can constantly test all of these things. No two emails ever need to be the same, and if you're clever (and have the right technology platform) you can test multiple emails across your customer base simultaneously. Even something as simple as changing a subject line can make a difference, the results of which can almost be viewed in real time.
I've had the good fortune to work with real geniuses in the email field, and don't claim to be in their league at all. But I'm learning.