What is a newsletter?
Still have a question, spotted an error, or have a better explanation or a source we should cite?
A newsletter is a recurring email you send to people who asked to receive it. That second part is what separates a newsletter from spam. Permission first, then consistency.
Newsletters aren't transactional (password resets, receipts) and they're not one-off marketing blasts (flash sale announces, product launches). They're marketing email with a predictable rhythm. Weekly, monthly, every Tuesday at 9am. The cadence is part of the value.
What makes newsletters work: you own the list. If Mailchimp or Brevo or ConvertKit shut down tomorrow, you take your CSV and move it somewhere else. Compare that to social media, where the platform owns your audience and can change the algorithm anytime. Your newsletter list is yours.
Newsletters range from personal storytelling (individual creators sharing essays, observations, advice) to brand updates (company news, product launches, curated links) to industry roundups (weekly summaries of sector trends). The tone follows the sender. A solo creator's newsletter might read like a letter to a friend. A SaaS company's might be more polished but still conversational. Both are newsletters if they're recurring and permission-based.
The practical difference between a newsletter and other marketing email: newsletters survive on engagement, not urgency. A triggered campaign might send once and disappear. A newsletter has to earn opens every single time it arrives. That means consistent value (readers know what they're getting), predictable timing (they expect you), and clean design (easy to scan, easy to act on).
And if you're starting a newsletter, the first question isn't what ESP to use. It's what you're going to say that readers will want to hear every week. Figure that out first. Then pick your platform and set up your authentication correctly from day one so you don't have to fix deliverability later.
Contributors
Who worked on this answer
Every name links to their profile. Every company links to their site. Real people, real accountability.
