A countdown timer is a powerful tool that helps:

  • encourage urgent purchases,
  • build excitement for an event,
  • create a "don't miss out" feeling right inside the email.

In this article, we'll cover how to add a timer to an email, even if you're not a developer.

Why add a timer to an email?

A timer works well for:

  • wrapping up promotions ("The sale ends in…"),
  • reminding people an event is starting ("Starts in…"),
  • closing registration ("Registration closes in…").

Statistically, emails with timers show a +15–30% boost in CTR and engagement.

Why can't you build a timer with plain HTML?

❌ Emails can't run live JavaScript (email clients block it).❌ HTML animation is limited too.

The solution: use dynamic GIFs or embedded images that update on the server.

How to add a timer in Letteros

Step 1. Prepare the timer

Letteros has a built-in timer generator.

  • Choose a style (colors, size, font).
  • Set the end date and time.
  • Copy the generated link to the timer image.

Step 2. Add it to the email

  • Add an image block to the email.
  • Paste in the URL of the generated timer.
  • Check the preview: the timer should display and be ticking.

Step 3. Test it on different devices

Check:

  • desktop clients (Outlook, Gmail),
  • mobile clients (iOS Mail, Gmail app).

Important: the timer updates on the server, so even a static email shows the correct time.

How to add a timer using third-party services

If you want to use an external tool, try:

These services generate a link to a GIF timer that gets inserted into the email like a regular image.

Tips for effectiveness

✔ Place the timer above the fold — so it's sure to be seen.✔ Add deadline text right next to it ("Discount valid until…").✔ Don't overuse timers, or you risk losing your readers' trust.

Conclusion

A countdown timer is a simple but powerful way to make an email more effective.In Letteros, you can add a timer in a couple of minutes with no coding or markup required, using ready-made tools.