But Microsoft probably won't be changing back to Webkit any time soon, so if you're waiting for that to happen, you will be stuck using an outdated version of Outlook for a while.

Well, first, you could roll-back to a version previous to 15.22 - see the bottom of this article to a link to download Outlook Mac 2016 version 15.19. So what can we do to fix the HTML email signature formatting and rendering issues? Outlook Mac 2016 15.22+ now uses the Word Rendering Engine and no longer uses Webkit to render emails and it looks like that's here to stay. In the 15.22 update to Outlook Mac 2016, the geniuses over at Microsoft decided to change from the Webkit rendering engine, to their Word rendering engine, using the excuse that people wanted to be able to insert tables into email messages and that the Word rendering engine is better equipped to handle that task. In other words, email clients that use Webkit to compose emails, play much nicer with all other major email clients, because the code is similar to how a browser would render the code, and less like how email client's render the code.

A little bit of history about the issueīefore the 15.22 update, Outlook Mac 2016 used the Webkit rendering engine to compose emails, which is great because that's the standard these days for best cross-compatibility with other email clients.

This is only applicable if using your signature key.įor full instructions on installing your email signature on Outlook for Mac 2016, visit our guide here. Not only does the signature installer app install your email signature for you, it will also automatically update your email signature whenever any changes are made to your email signature from your account. You simply select your email client and email account, then enter your unique signature key or insert your custom HTML code and the installer app will install your email signature into your desired email client for you. Installing your email signature with our app takes just seconds. By using the signature installer app, you will be able to correctly install your email signature in Outlook for Mac 2016, resolving the installation issue that is currently experienced with other methods of installation. We've spent the past few months developing a signature installer app for macOS which works with all of the major email clients including Outlook for Mac 2016.

Outlook for mac issues