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Calls to Action (CTAs)
A call to action, or CTA, is the specific instruction that tells a reader what to do after reading an email: click through to a product page, download a guide, confirm a booking, or take whatever step the email body copy has been building toward. A CTA is where all the work of the subject line and body copy either pays off or doesn't: a great email with a weak or buried CTA still fails to produce a result.
One Primary CTA Per Email
Every additional competing action in an email dilutes attention away from the one that matters most. An email with five different links pulling in five different directions forces the reader to make a decision about where to click, and many will simply make none. The most effective structure is usually:
- One clear primary CTA, repeated once or twice at natural points in the email
- Optional secondary links (like "read more" or social links) that are visually de-emphasized so they don't compete with the primary action
This doesn't mean an email can only ever contain one hyperlink; it means only one action should look and read like the main point.
Action-Oriented, Verb-First Phrasing
CTA copy works best when it starts with a verb and describes the action or the outcome, rather than a vague label. Compare:
| Weak CTA | Stronger CTA |
|---|---|
| "Click Here" | "Get Your Free Guide" |
| "Submit" | "Start My Trial" |
| "Learn More" | "See How It Works" |
| "Continue" | "Claim Your Discount" |
Generic phrases like "click here" or "submit" describe the mechanism of clicking rather than the benefit of clicking, and they give the reader no reason to act. First-person phrasing ("Start My Trial" instead of "Start Your Trial") is a small wording choice some brands use because it mirrors the internal voice a reader uses when deciding for themselves. It's worth testing rather than assuming it always wins.
Urgency and Specificity
Vague CTAs ask for a vague commitment, which is easy to postpone indefinitely. Specific CTAs describe exactly what happens next and why now is the right time:
- Be concrete about the action: "Download the Checklist" rather than "Get Started"
- Add real urgency where it exists: a deadline, limited inventory, or expiring offer, stated honestly
- Reduce the perceived commitment where relevant: "See Pricing" feels lower-risk than "Buy Now" for a first touch
As with subject lines, urgency in CTA copy only works if it's true. Manufactured urgency on every single email teaches subscribers to ignore it, which undermines the CTA on the emails where the urgency is real.
Button vs. Text-Link CTAs
CTAs are generally rendered one of two ways, and each has a place:
- Button CTAs are visually prominent, easy to tap on mobile, and clearly signal "this is the action to take." They're the right default for the primary CTA in most promotional or transactional emails.
- Text-link CTAs feel more conversational and lower-pressure, which suits editorial-style emails, newsletters, or messages where a hard sell would feel out of place. They're also useful as secondary CTAs alongside a primary button.
Button design itself is a design concern as much as a copy one: size, color contrast, and spacing all affect whether a well-worded CTA actually gets noticed and tapped, particularly on mobile screens.
Placement
Where a CTA sits in the email affects performance as much as its wording does. A few placement principles apply broadly:
- Put the primary CTA above the fold when possible, so it's visible without scrolling, especially for shorter emails
- Repeat the CTA near the end of longer emails for readers who scroll all the way through before deciding
- Keep the CTA visually distinct from surrounding body copy so it doesn't get lost in a paragraph
- Avoid placing the CTA immediately after unrelated or lower-priority content, which breaks the momentum built by the copy leading up to it
Testing CTA wording and placement against each other is one of the highest-leverage places to apply testing and optimization, since small changes here tend to move click and conversion metrics more directly than most other copy edits.