

That’s why things like animated GIFs and the use of certain media queries work in some versions of Outlook, but not in the Windows desktop versions. Conversely,, Outlook mobile apps, Outlook for Mac, and the online version of Outlook 365 use WebKit, which is much more reliable for rendering HTML emails. That’s because these clients use Microsoft Word as their rendering engine. So why does Outlook cause so many problems for email developers?Īs you read through this list, you’ll notice that many of the worst issues are limited to the Windows desktop versions of Outlook (2007-2019).



Some of those Outlook issues have been fixed over the years, but others persist. Outlook inboxes have a reputation for rendering emails inconsistently and lacking support for features that email marketers want to use. Just the thought of developing Outlook HTML emails and troubleshooting problems might stir up frustrating memories and give you acid reflux. For email developers, that troublemaker is Outlook.Įmail developers have the same feelings about Microsoft Outlook as web developers once had about Internet Explorer (RIP). There’s one in every family, classroom, and summer camp: A problem child or a black sheep, someone who requires extra attention until they get set straight.
