How many CTAs should an email have?

You've spent an hour crafting the perfect email. There's a sale to announce, a new blog post worth reading, and a referral program you want subscribers to try. The temptation is to include all three. Most of the time, that's the wrong call.

For promotional and transactional emails, one CTA is almost always the right number. Your goal is to move the reader toward a single outcome: buy this, register here, download that. When you give someone three options, you're not tripling your chances of a click. You're splitting attention and slowing the decision. Emails with a single, clearly prioritized CTA consistently outperform those with multiple competing buttons.

Newsletter formats are the main exception. If you're sending a roundup of articles, products, or content links, multiple CTAs are expected. Readers understand they're browsing rather than being asked to do one specific thing. Even then, it helps to have a primary CTA that gets the visual emphasis: bigger button, more prominent placement, contrasting color. The secondary links can sit further down as plain text or smaller buttons.

If you find yourself wanting three or more CTAs in a promotional email, that's often a signal the email is trying to do too much. Consider splitting it into separate sends, or saving the secondary asks for a future campaign. You can also A/B test single-CTA vs. multi-CTA versions on your actual audience. The data usually makes the decision obvious within a send or two.

So Start by writing your email around one clear action. Ask yourself: if the subscriber only clicks one thing, what do you most want it to be? Build the email around that answer, and treat everything else as supporting context.