https://github.com/hteumeuleu/email-bugs/issues/10
I struggled to fix weird issues in Outlook.com and Office 365 until I was reminded of a strange bug where empty link tags or those with only # cause breaks.
When Office 365 encounters an empty href, it removes the
<a>
tag but leaves its content:
… becomes :
Hello world
When you have something other than a URL inside a href, Office 365 will show this content inside the email between brackets:
… becomes :
[Hello]world
Office 365 will also strip the
<a>
tag if it contains empty anchor links:
But it will leave named anchor links alone: