How often should I email my list?

It's one of the most common questions in email marketing, and the honest answer is: it depends. But "it depends" is only useful if you know what it depends on.

The starting point is always what you promised at signup. If you told subscribers to expect a weekly newsletter, send weekly. Changing that cadence without warning, especially going more frequent, is one of the fastest ways to generate complaints. People signed up for a thing. Give them the thing.

Beyond that baseline, frequency comes down to a few factors worth thinking through honestly.

What type of email is it? Transactional emails (receipts, shipping updates, password resets) go out when triggered and frequency isn't really a decision you make. For marketing emails, daily works for some audiences (flash sale retailers, daily news digests) and feels like harassment for others (B2B newsletters, long-form content). There's no universal number.

What does your engagement data say? Your subscribers will tell you what they want, but not with words. If open rates drop steadily as you increase frequency, that's a signal. If complaint rates creep up, that's a louder signal. If unsubscribes spike after a particular campaign, look at what changed. These aren't abstract metrics. They directly affect how your sending reputation is scored by inbox providers.

How do you test frequency changes safely? Don't change frequency for your whole list at once. Start with a small segment of your most engaged subscribers, maybe 10-15% of your list. Watch complaint rates (you want well under 0.1%), unsubscribe rates, and open rates for 2-4 weeks before rolling out to more. If numbers hold, expand slowly. If they drop, you've protected most of your reputation while learning something real.

One thing worth knowing: inbox providers like Gmail and Yahoo Mail don't just look at individual sends. They look at patterns over time. A sudden jump in volume can trigger filtering even if your content is fine, because it looks unusual to their systems. Gradual changes are always safer than abrupt ones.

Now the cleanest version of this? Let subscribers tell you what they want. A simple preference center where people can choose weekly, fortnightly, or monthly gives you better data than any A/B test, and it preempts complaints from people who feel overwhelmed. (Not everyone will use it, but the people who do are telling you exactly how to keep them happy.)

If you're genuinely stuck on what cadence makes sense for your specific list size and type, our SOS hotline is free and we'll give you a straight answer.