Home Resources Blog

Planning to use Flash in your newsletter? Honestly, don’t do it. To this day, we still get emails asking about any workarounds we might know of to get Flash working in email. Occasionally we even get a more aggressive email telling us we’re just plain wrong. Funnily enough, these claims are never backed up with examples.

To put this one to bed forever, we figured we’d run a series of tests across a range of email environments to get to the bottom of flash in email support once and for all.

The test email

The test email

Our test email consisted of a basic HTML page with text, images and Flash content. We also included a text-only version of the email with a link to check out the full content in a browser.

Obviously we chose to avoid using any Flash detection via JavaScript because it would be blocked outright. Instead, we used the default code supplied by Macromedia and included a fallback jpeg to be displayed if Flash was not detected.

UPDATE: It turns out this method isn’t well supported at all and the best approach is to use a background image in the table cell or DIV the flash movie is being placed.

To cover a solid range of email environments, our test suite consisted of all the major PC, Mac and web-based email environments we could get our hands on.

What we found (and it aint pretty)

Flash support across major email environments
PC Displayed by default Alternate content displayed Security warning
Outlook 2003 No No Yes
Outlook Express No No Yes
Thunderbird No No No
Eudora 7 No No No
AOL 9 No No No
Lotus Notes No No No
Mac
Mac Mail Yes Doesn’t matter No
Eudora 6 No No No
Entourage No No No
Web based
Gmail No No No
Hotmail No No No
Yahoo! Mail No No No
Windows Live Mail (beta) No No No

The results really do speak for themselves (more details below). Flash support across the most popular email environments is absolutely dismal. In the past, we’ve said that unless you specifically know the environment your recipients are opening your email in, avoid flash. Well, now we can revise that down to one lonely email client.

Flash was built for the browser, and based on these results – that’s where it should stay.

A closer look

We’ve included a screenshot and summary for each of the tests we ran so you can dig a little deeper yourself. Click on a thumbnail to see a larger version of the screenshot.

PC test results

Outlook 2003

Outlook 2003

OK, not a good start! Before I even get a chance to see if the flash works I get an ActiveX security warning that stops me in my tracks. After clicking OK, the email displays, but the Flash content or the fallback image is nowhere to be seen.

Outlook Express

Outlook Express

Outlook Express behaves much like it’s big brother. An ActiveX security warning is displayed, and once the email loads the flash content is just a blank area with no fallback image.

Thunderbird

Thunderbird

While a security warning wasn’t displayed, Thunderbird instantly stripped out my flash content and didn’t display a fallback image.

Eudora 7

Eudora 7

The trend continues… Eudora didn’t display the flash content or the fallback image, and even managed to mangle the background image behind the flash content slightly.

AOL 9

AOL 9

AOL products a very similar result to Eudora. Neither the flash content nor the fallback image was displayed.

Lotus Notes 6.5

Lotus Notes 6.5

This was always going to be a stretch, but you guessed it, Notes didn’t display the Flash movie or the fallback image.

Mac test results

Mac Mail

Mac Mail

SUCCESS! Mac Mail loads the flash movie instantly and in all it’s amateur glory.

Eudora 6

Eudora 6

Eudora didn’t like our flash movie one bit. Unlike most of the other email clients, it displayed a broken media icon and the filename of the flash movie instead of an empty placeholder. AT least this way the user knows they’re missing out on something.

Entourage

Entourage

Entourage behaved much like its PC equivalents but without the security warning. No flash movie, no fallback image.

Web-based test results

Gmail

Gmail

If CSS is a no go, we certainly weren’t expecting flash support. We were right. No empty placeholder or fallback image, the flash content was stripped from the email completely.

Hotmail

Hotmail

Just like Gmail, Hotmail stripped the flash content from the email altogether. No dice.

Yahoo! Mail

Yahoo! Mail

Yahoo! Mail is usually the most flexible web based email client when it comes to displaying content. Not this time. The flash movie or backup image is nowhere to be seen.

Windows Live Mail (beta)

Windows Live Mail (beta)

It’s probably a little early to make any concrete assumptions about Windows Live Mail, the next generation web based email client from Microsoft. At any rate, it’s not looking good. No flash content, fallback image or even background images. It does have much better CSS support than Hotmail, but that’s another kettle of fish.

As I mentioned earlier, if anyone knows of a better way we can format our test email to achieve better results, we’d love to know. We’re more than happy to repeat these tests with different content and re-publish the results.

This blog provides general information and discussion about email marketing and related subjects. The content provided in this blog ("Content”), should not be construed as and is not intended to constitute financial, legal or tax advice. You should seek the advice of professionals prior to acting upon any information contained in the Content. All Content is provided strictly “as is” and we make no warranty or representation of any kind regarding the Content.
Straight to your inbox

Get the best email and digital marketing content delivered.

Join 250,000 in-the-know marketers and get the latest marketing tips, tactics, and news right in your inbox.

Subscribe

See why 200,000 companies worldwide love Campaign Monitor.

From Australia to Zimbabwe, and everywhere in between, companies count on Campaign Monitor for email campaigns that boost the bottom line.

Get started for free