Microsoft Upgrading Hotmail Users to; Litmus Retires Hotmail

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As Hotmail moves users to, Litmus will be retiring Hotmail testing effective March 29th.

Back in August 2012, we announced the addition of to our email and interactive testing suites. This was a result of Microsoft notifying its users that would be the new home of Hotmail users. And, after eight months, this move is finally happening! is officially coming out of preview, with Microsoft claiming 60 million active users to date.


As a result, Microsoft has been in the process of upgrading Hotmail users to — in fact, many have already been upgraded.


As a result of Microsoft shutting down Hotmail, we’ve also begun migrating all our Hotmail testing to (which we’ve offered for testing since August of last year). Starting on March 29th, email testing and interactive testing in Hotmail will no longer be available.

For better or worse, rendering in is very similar to Hotmail rendering. However, as we stated in a previous post, as Ros at Campaign Monitor pointed out, Microsoft’s ‘Segoe UI’ will be used for displaying h1, h2 and h3 headings unless another font is specified in your CSS. We also noticed that the default color for headings is white (!) and that paragraph tags will default to Calibri set at 15px.

In addition, in case you haven’t heard, has dropped support for the margin property. But don’t worry — we’ve got the fix.


Rather than wait around for the inevitable, you can upgrade your own Hotmail account to immediately. You can sign into — — with your existing Hotmail account.


For more information about the upgrade to, check out this help article from Microsoft.


As Microsoft explains in their Q&A article, is optimized for the following browsers:

  • Windows Internet Explorer 10, 8 & 9
  • Google Chrome 17+
  • Firefox 10+
  • Safari 5.1 on Mac

These requirements pose no problems for your tests, since we open web-based email clients (including in Internet Explorer 9, and the latest versions of Firefox and Chrome.

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