Countdown timers in Outlook: when they animate and when they freeze

If your countdown sits still in Outlook, it's almost always one of three things: the Outlook version, the Windows animation setting or blocked images. Here's what Microsoft documents about each one, what the reader sees in each case and how to test before you send.

Which versions of Outlook animate the GIF?

"Version 2008" is a Microsoft 365 version number, not Outlook from the year 2008.

When Microsoft announced the feature in 2019, Litmus also reported that looping GIFs would play three times and then pause. We haven't found that detail in Microsoft's current help. If it still holds, our 30-second GIF would stop at around the minute-and-a-half mark. Reopening the email requests a new image with the correct time.

Why does my countdown stay on the first frame?

Windows animations are turned off. That's the cause Microsoft gives: Outlook plays animated GIFs by default, and if only the first frame appears, the user has animations disabled. In Outlook for Microsoft 365 version 2008 and later, that's the Windows setting, not an Outlook one. It lives under Accessibility > Visual effects. Assume some of your readers will have it off.

The Outlook version is old. Outlook 2007, 2010 and 2013 stay on the first frame, according to Klaviyo.

Nothing shows at all: images are blocked. Classic Outlook for Windows comes set up not to download pictures from the internet automatically. Until the reader clicks "Download Pictures" in the InfoBar, they see only the alt text. Outlook for Mac doesn't download them by default either. The Outlook apps for iOS and Android do download them, unless the user or their organization has turned on blocking for external images.

How do you turn animations on?

These are Microsoft's steps. Use them to check your own Outlook or to answer a customer who asks why they can't see the timer; you can't change them from the email.

Windows 11

1. Press Windows + I to open Settings.
2. Go to Accessibility.
3. Select Visual effects.
4. Turn Animation effects on.

Windows 10. Click Start, type "Show animations" and, under Simplify and personalize Windows, turn on Show animations in Windows.

Outlook for Office 365 before version 2008. Go to File > Options > Advanced and, in the Display section, check Play animated GIFs.

Without changing any setting. Open the message and, on the Message tab, in the Move group, choose Actions > View in Browser. The browser shows the animated GIF.

What does the reader see when only the first frame shows?

In our GIF, the first frame is complete: background, digits, labels and separators. It shows the time left at the moment the email was opened, for example "02 DAYS 14 HOURS 05 MIN 37 SEC." The next 29 frames carry only the digits that change, but the first one is never blank or half drawn.

Once the offer has ended, the GIF is a single frame with your expired message, so Outlook shows it like any other client does. If you chose to hide it, it's a transparent 1-pixel image.

To cover blocked images:

• Write the deadline in the body of the email, near the button.
• Change the alt text in the code to that date. The code comes with alt="Countdown timer"; something like alt="Offer ends November 29 at 11:59 p.m. Eastern" works for anyone who can't see the image.

Do I need VML or conditional code for Outlook?

No. The code you copy is an <img> tag inside a table, with the background color set on the table (background-color) and on the cell (bgcolor). It doesn't use CSS background images, so you don't need VML or <!--[if mso]> conditional comments.

If you need a different size, change it in the generator (width runs from 200 to 1,000 px) instead of stretching the image with CSS, because a stretched GIF loses sharpness.

How do I test the countdown in Outlook before sending?

1. Send a test to an account you open in desktop Outlook for Windows. If the InfoBar appears, click "Download Pictures."
2. Check it with animations on and off. Change the Windows setting and reopen the email: with animations off you should see the first frame with digits, not an empty box.
3. Open it twice a few minutes apart. The time should have dropped, since each open requests a new image.
4. Test the versions with no documentation. The new Outlook for Windows, Outlook on the web and Outlook for Mac, if your list uses them.
5. For a per-recipient timer, do a live send. In some test sends the ESP tag arrives unreplaced and the engine ignores it, so the timer counts from that moment. Send the campaign to a list with two or three of your own addresses.

Each platform guide covers its editor's preview and test send: Klaviyo, Mailchimp, HubSpot, Shopify Email, Brevo, Mailjet and ActiveCampaign. For Gmail and Apple Mail, see the complete guide to email countdown timers.