How to add a GIF to an Outlook email and make sure it actually animates

Marketers keep asking the same question in two different ways. The first is how to add a GIF to an Outlook email, which is a two-minute answer. The second is why the GIF they added showed up frozen in half of their inboxes. This is the real question.

In this article, we answer both questions. First, we will cover how to add a GIF to Outlook, which is quite simple. Then we will move on to the more complicated part: understanding which version of Outlook your recipients use, why rendering differs between versions, how to create an email that looks right, whether the animation works, and how to test it before sending.

Key takeaways

1. Outlook is not one email client. Classic Outlook for Windows, New Outlook, Outlook for Mac, Outlook on the web, and the mobile apps each handle animation differently, and only some of that behavior is under your control.
2. Whether your animation plays in classic Outlook depends on a Windows setting the recipient owns. You cannot force it or detect it.
3. Design the first frame to carry the whole message. Everything else in this article is secondary to this one rule.
4. Outlook desktop accounts for 5.83% of tracked opens globally. Check your own numbers before you decide how much this matters.
5. Keep the file under 1 MB and flashes under three per second, and write alt text that describes the action rather than the image.

(Source: Litmus)

Does your version of Outlook actually animate GIFs?

The honest answer is that you cannot know for sure, and this affects all your next decisions.

Various sources publish tables that often contradict one another. The reason is that GIF animation depends not only on the Outlook version but also on Windows settings and whether the recipient has blocked animation in their email settings.

So treat the information below as likely behavior rather than a guarantee.

Classic Outlook for Windows (2016-2021, Microsoft 365)

Microsoft’s support page states that GIFs play in the message body in Outlook for Microsoft 365, Outlook 2024, 2021, 2019, and 2016. If only the first frame of a GIF appears in the message, then animation is disabled.

According to the “Can I email?” website, GIF support in an Office 365 account is partial. The animation plays three times, then stops and displays a play button that lets the recipient play it again.

(Source: Can I email?)

New Outlook for Windows

New Outlook uses a different rendering engine. Our own test showed that GIF animation works normally when sending and receiving emails. But rendering can be unreliable, so test your emails before sending them to a large audience.

Outlook for Mac

The current Outlook for Mac animates GIFs in emails. We tested this ourselves, and the GIF animated successfully in the received message.

Outlook on the web and Outlook.com

This stands in the reliable end of the range. The animation plays automatically and loops as many times as the file specifies. Outlook.com accounts for 0.42% of tracked opens, which is small, but Outlook on the web inside corporate Microsoft 365 tenants is a much larger population than that figure suggests.

Outlook for iOS and Android

These mobile apps animate GIFs without any special handling or loop limits. If most of your audience uses mobile devices, then the animation will most likely work.

Four ways to add a GIF to an Outlook email

Which method you use depends on whether you are sending a single email or a campaign. The first three methods work well for sending emails from a personal inbox. Use the fourth one for bulk email campaigns.

Method 1: Insert a GIF into an Outlook email (classic Outlook, Windows)

An easy way to insert a GIF into an Outlook email:

1. Save the GIF to your computer with a .gif extension.
2. In the message body, go to Insert > Pictures.
3. Select the file and click Insert.

Method 2: Add a GIF in Outlook on the web and New Outlook

This method is quite similar to the first one. Here is how to put a GIF in an Outlook email: 

1. Click into the message body where you want the image to appear.
2. Go to Insert > Pictures.
3. Choose the file and click Open.

It is better to use a GIF already saved on your desktop rather than drag one from another app. This can break the GIF, leaving you with a static frame or a broken image instead of a working GIF.

Method 3: Online pictures and the GIPHY add-in

You can add the GIPHY app to your Outlook and search for and add GIFs from the app to your emails.

It is worth checking with your security team before using GIPHY because the app sends the message context to its servers. Also, this method will not work for marketing campaigns because you do not control the hosting, file size, or frame timing.

Method 4: Hosted GIF in an HTML template

Adding GIFs to Outlook email templates only takes a couple of clicks in Stripo. We also have ready-made templates designed specifically for Outlook. You can use them for inspiration or as a starting point for your email, then customize and refine the template as needed.

Here is how to put a GIF in an Outlook email with Stripo:

1. Pull the Image basic block into the template.
2. Drag-n-drop an animated GIF image or paste a URL. The maximum size is 3 MB. You can also choose GIFs from the Image Gallery.
3. Finish your template.
4. Hit Export.

We wrote a separate article on creating an Outlook email template with Stripo. And another article covers the available export options and formats in detail. 

Why your GIF shows up as a still image

This happens less often now, but it is still possible with Outlook. 

The Word rendering engine, in plain terms

For a long time, Outlook used Microsoft Word’s HTML engine to handle emails instead of a browser engine. As a result, animation was neither convenient nor intuitive in Outlook.

Microsoft added GIF playback to Outlook as a separate feature. Because of this, GIF animation can be enabled or disabled in Windows, which recipients often do.

What “first frame only” looks like in the inbox

If the animation doesn’t work, then Outlook doesn’t show an error. It simply displays the first frame as a still image. The email doesn’t look broken, so it may seem like everything is working as expected.

A still GIF can still be part of your message if you use the first frame wisely. Make sure your GIF looks good from the first frame and doesn’t rely on later frames to deliver the main message. That way, even if the animation doesn’t work, this element will not ruin the entire email campaign.

Loop limits and the play button

This only applies to classic Outlook for Windows, which plays a looping animation three times, then pauses it and adds a play button. Clicking runs three more cycles. Clicking the image again pauses it.

In the New Outlook version we tested, there is no such limit. The animation keeps playing and the play button does not appear.

The zero-second frame delay trap

This error can occur when exporting a GIF from video editing tools. It can make the animation much slower than intended.

As a result, an animation that should play at 30 frames per second may play at only 10. Instead of a smooth product rotation, the recipient gets a choppy animation that looks like it is stuttering.

When exporting a video, it is better to set the frame delay rather than leave it to chance and hope everything works as expected. And, of course, test the final version.

GIF not playing in Outlook? Work through these causes

The causes fall into three categories. Before changing your files, figure out which one you are dealing with. 

Sender-side causes

1. The message was sent as plain text, while animation requires HTML.
2. The file was not saved and inserted into the email but loaded from a browser instead. As a result, the email may have loaded a static image or a broken link.
3. The file is not in the .gif format.

Recipient-side causes

1. Animation is disabled in Windows settings or in the advanced settings of older versions of Outlook.
2. The recipient has blocked automatic image loading.
3. The recipient is reading the email in the preview pane, where playback works differently than in the full message window.

Organization-side causes

1. The organization’s policy has disabled Windows animation across the system.
2. Security policies may rewrite or remove links to remote images.
3. External image loading is blocked at the email client level.

Build a fallback so the email works either way

Even if your GIF doesn’t play for some reason, there are ways to make sure your email still gets the message across. 

Rule one: The first frame carries the message

Put the offer or product in the first frame, so even a frozen GIF will not be a major problem.

Avoid gradual color transitions, animations that build word by word, or animations in which the message only becomes clear in the final frame. Start with the end result and animate outward from there.

The image in this example is animated. But no matter when the animation stops, the main message of the email remains clear.

(Source: Stripo template)

Conditional code for MSO clients

If the first frame cannot carry the message, create a dedicated static fallback for classic Outlook using conditional comments. You can add this code through Stripo’s HTML editor. 

<!--[if mso]> is a special HTML comment for Microsoft Outlook.

<!--[if mso]>
 <img src="https://cdn.yourdomain.com/static-fallback.png"
 alt="The spring collection in four colorways"
 width="600" style="display:block;">
 <![endif]-->

New Outlook for Windows no longer uses the old MSO or Word rendering approach, so its users will see the regular GIF. Conditional comments work specifically for classic Outlook for Windows.

Alt text as the last line of defense

If the image is completely blocked, all you have left is the alt text. Write it as a sentence that can stand on its own in the layout and convey the main message.

Give the image clear width and height attributes, as well as a font color, so the alt text appears within the reserved space rather than collapsing the layout.

When “view in browser” is not a fallback

Keep the “view in browser” link in your email, but do not treat it as a fallback for animation. Almost nobody will open a browser to watch a marketing animation. The “view in browser” link is a safety net for rendering issues.

How to add a GIF to an Outlook signature

Animated signatures are the most common way people add GIFs in Outlook outside of campaigns, and they are also where animation fails most often.

We have a separate article on how to create a signature with a GIF and which mistakes to avoid. 

Classic Outlook: File > Options > Mail > Signatures

1. Go to File > Options > Mail > Signatures.
2. Create a new signature or select an existing one.
3. Place the cursor where you want the GIF to appear and click on the Picture icon. Select the GIF file and click Insert.
4. Save the signature, then send a test email to yourself and to an external address.

Keep the GIF well under 500 KB. Your signature is added to every message in which you use it, including replies and forwards, so a large GIF can quickly add unnecessary size to your emails. 

New Outlook: Settings > Accounts > Signatures

The path is Settings > Accounts > Signatures, and insertion works the same way.

Microsoft Support says that signatures have limited animation support in New Outlook. But our own test did not show this problem. 

When creating your signature, keep a few things in mind:

1. Insert the saved file instead of copying and pasting it. Pasted GIFs are the most common reason a signature shows only one frame or disappears completely when sent.
2. Do not judge the GIF by the signature editor. Sometimes, recipients see the animation even when the sender doesn’t see it while writing. Send a test email to yourself and to an external address before drawing any conclusions.
3. Check the animation setting in New Outlook. Go to Settings > Mail > Reading Pane > Joyful animations and make sure it is enabled.

GIF specs that survive Outlook

Here are the conditions your GIF should meet to work properly in Outlook.  

File weight and message size limits

Litmus recommends keeping the file size below 1 MB. Microsoft Exchange Online specifies message size limits for Microsoft mailboxes. The default limits are 35 MB for sending and 36 MB for receiving. Microsoft administrators can set a custom limit ranging from 1 MB to 150 MB.

In practice, your GIF should be a little smaller than the recommended limit. Attachments are encoded in Base64 during transmission, which increases their size by about 33%. The recipient’s server may also have its own size limit.

Width and responsive behavior

Create GIFs with a width of 600 px. Set the width and height as HTML attributes on the image, not only in CSS. Litmus notes that classic Outlook does not support CSS width and height, so an image without these attributes will be displayed in its actual size.

Also, add max-width: 100%; height: auto; inline for clients who support it.

Frame count, frame rate, and loop length

Each frame adds to the file size. Keep these four points in mind to reduce the size:

1. Trim the frames. A short loop is easier to watch.
2. Prefer solid colors. A GIF supports up to 256 colors per frame, so gradients are not worth the extra file size.
3. Crop the canvas to the area that actually moves. If only a 200-pixel icon is animated in a banner, there is no need to make the entire 600-pixel banner part of the animation.
4. Compress the file with a dedicated optimizer.

Embedded vs. hosted: Which to use when

The right option depends on how you use the GIF. Here’s how embedded and hosted GIFs compare on the factors that matter most.

Accessibility: Safe GIFs, not just legal ones

Like the rest of your email, GIFs should be accessible. Here are the factors that affect GIF accessibility.

Photosensitive epilepsy and the three-flash threshold

With the growing popularity of GIFs, videos, and video games, the world has faced photosensitive epilepsy, which affects up to 1 in 4,000 people, according to The Epilepsy Foundation’s 2022 review.

WCAG 2.2 Success Criterion 2.3.1 states that content should not flash more than three times per second. Use transitions instead of cuts between frames. This makes the GIF smoother. It is also better to animate one element rather than the entire banner, which keeps the flashing area smaller.

Make sure you use only one animation on the screen at a time. Multiple flashing and moving elements can cause dizziness even in individuals without epilepsy.

What the EAA means for EU senders

The European Accessibility Act has been enforced since 28 June, 2025. It applies to businesses selling products or services to EU consumers, regardless of where the company is based. The exemption applies only to microenterprises with fewer than 10 employees and a turnover of under €2 million that provide a limited list of services.

The EAA relies on harmonized European standards, mainly EN 301 549 v3.2.1, which aligns with WCAG 2.1 Level AA.

For animation in emails, that involves the flash threshold above, real alt text, and adequate color contrast in the frames themselves.

This is a legal matter and not a design guideline, so use it as a general reference and consult your legal team for specific requirements.

Alt text that describes the action, not the pixels

WCAG 2.2 Success Criterion 1.1.1 states that all non-text content should have alt text that serves the same purpose. This also applies to GIFs.

Screen readers should be able to describe your GIF with something more meaningful than “animated GIF.” Describe what the animation communicates rather than what it looks like.

Here’s a good example: “The jacket is available in dark blue, olive, and terracotta. All three colors ship for free this week.”

This also serves as a fallback when images are blocked or the GIF displays the first frame as a frozen image.

You can use Stripo’s accessibility checker to check whether your email meets accessibility requirements and to make sure you haven’t forgotten to add alt text.

Test before you send

Before sending an email with a GIF to your entire mailing list, test it thoroughly. With Stripo, you can run several important tests, including an Email on Acid test, dark mode testing, and an accessibility check. 

What a rendering test can and cannot show you

With Stripo’s integration with Email on Acid, you can test how your email renders in different email clients. However, the tool provides a static screenshot showing whether the GIF loads and which frame was captured. This test cannot show whether the animation actually plays or whether the recipient’s Windows animation settings allow it to do so.

To see whether the GIF actually animates, send a test email to several real mailboxes and open it there. There is no alternative to testing it in a real inbox.

How to find out which Outlook versions your list uses

In most cases, you cannot know for sure. Litmus notes that most Outlook desktop opens come from Outlook 2016 and newer versions, which use the same identifiers, so analytics cannot distinguish between them. The same segment also includes Outlook 2013, 2010, 2007, the 2000-2003 range, and Outlook for Mac.

What you can do:

• segment by domain. A list dominated by corporate domains is likelier to include classic Outlook. Consumer domains are likelier to be associated with Apple and Gmail;
• compare the click rate of the GIF and static versions. Send the same email to the same segment. Give one part of the segment the GIF version and the other part the static image version. Then compare the click rates. This is a practical approach because the goal of an email is to see whether it helps the campaign get more clicks or conversions. 

When a GIF is the wrong format

If a GIF is not quite what you need for your goals, here are some other options to consider. 

MP4, APNG, and WebP in email

The main problem with these formats is that email clients do not support them consistently. Email clients usually remove the <video> tag, so you cannot embed a real MP4 video directly into an email.

APNG and WebP are image formats that can contain animation. Compared with GIFs, they offer better image quality and often have smaller file sizes. But Outlook does not fully support APNG and WebP, so they fall back to the first frame. This is actually useful because instead of a broken image, the recipient sees a static image. 

If GIFs cannot carry what you need, consider moving the content to a landing page and using a still image with a link in the email. 

Dark mode and GIF backgrounds

Dark mode is now used by more than 25% of subscribers and breaks GIFs in a specific way.

A GIF doesn’t adapt its background to dark mode. If you export a GIF with a white background, it keeps it. In a dark-mode email, the GIF will appear as a large white rectangle.

There are two workable approaches. Create the GIF with a neutral background that looks good in both light and dark mode. Beige or gray can work well, while extreme options like white or black are best avoided. 

Alternatively, make the email background part of the GIF itself. This makes the GIF look like an intentionally colored block.

With Stripo’s dark mode preview, you can check your GIF in the editor as you design the email and make changes as needed.

Six GIFs that pass the first-frame test

In this section, we give six examples of GIFs that follow the first-frame rule and make the offer clear from the start. 

1. Taos Footwear

Mission the GIF fulfills: it shows the variety of products.

Taos talks about comfort and convenience, and the GIF featuring a selection of travel shoes, presented like the luggage screening area at an airport, illustrates this idea perfectly. Photos of different pairs of shoes would not create the same sense of travel.

(Source: Email Love)

2. Google Workspace

Mission the GIF fulfills: it presents the new feature (personal tasks).

Animated GIFs are a great tool for presenting new features and demonstrating how to use them. Google Workspace shows recipients how to create personal tasks from messages. They can also set a due date and add a description. This way, customers do not have to read long instructions and can see how to use the new feature directly.

3. Milla

Mission the GIF fulfills: it provides recipients with product details.

With several small GIFs, Milla shows that the company pays attention to every detail. Even if the GIFs freeze on the first frame, each window still shows a small part of the dress, which makes you want to see more.

(Source: Email Love)

4. Brighton

Mission the GIF fulfills: it draws attention to the CTA button.

The company invites customers to celebrate summer and add some color to their accessory wardrobe. Brighton uses a colorful CTA button to highlight this bright summer theme and to capture recipients’ attention.

5. Victoria’s Secret

Mission the GIF fulfills: it demonstrates a wide product assortment at a glance.

When you need to showcase an entire assortment or explain what items a set includes, an animated GIF can be a good option.

You do not have to animate the entire banner. You can animate just one element. This simple approach can also help you display all the available colors for a new product.

6. Care.com

Mission the GIF fulfills: it shows situations where you might need a helping hand.

Care.com uses a GIF to show situations in which the service can be useful to customers. A paragraph of text would not work as well as these images, which show help with grocery shopping, pets, and children.

(Source: Email Love)

Wrapping up

You can add a GIF to an Outlook email in less than a minute, but you cannot control whether it will animate. An animation designed with the offer in the first frame works in any email client. An animation that delivers its message only in the final frame works in some clients and silently fails in others, without telling you which ones.

Build your GIF around the frozen first frame, and treat the animation that actually plays as a bonus.

FAQ

1. Why is my GIF not moving in Outlook?

Often, the animation is disabled in the Windows settings on the recipient’s computer. Other possible reasons include sending the message as plain text, using the wrong file format instead of .gif, or blocked automatic image downloads. 

2. Does Outlook 2016 support animated GIFs?

Microsoft’s support page lists Outlook 2016 among the versions where animated graphics play by default in the message body. If only the first frame of the animation is displayed, then animated GIFs are disabled.

3. Does New Outlook support animated GIFs?

Generally, yes, in the reading pane, since New Outlook uses a web-based rendering engine. However, it is better to test this in practice rather than to rely on assumptions.

4. Why did the GIF button disappear from Outlook?

Microsoft removed the GIF option from the Expressions dropdown in Outlook on the web since about September 2021. Insert the file as an inline image instead, or install the GIPHY add-in from Microsoft Marketplace.

5. How big can a GIF be in an Outlook email?

For marketing sends, stay under 1 MB regardless of what the server allows. For embedded files, Exchange Online defaults to a 35 MB send limit and 36 MB receive limit. Base64 encoding inflates the file by about a third in transit, and the recipient’s server limit also applies, so the practical ceiling is lower than the stated one.

6. Can you put a GIF in an Outlook signature?

Yes. In classic Outlook, go to File > Options > Mail > Signatures and insert the file with the picture icon rather than pasting it. In New Outlook, the path is Settings > Accounts > Signatures.

7. How many times does a GIF loop in Outlook?

Three, in classic Outlook for Windows. The animation then pauses, showing a play button. Clicking it runs three more cycles. New Outlook, Outlook on the web, and the mobile apps loop as encoded in the file, with no play button. So the same GIF can loop three times for one recipient and indefinitely for another.

8. Should I convert a GIF to MP4 for email?

No. Email clients strip the <video> tag, so an MP4 will not play inline.