I’ve been working on fluid responsive emails and I found that Marketo adds a space in in the MSO comments that seems to keep Outlook from seeing the [if mso] code. I tested the same HTML in Marketo and MailChimp. The code works perfect in MailChimp, but breaks when sent through Marketo.
Here is where the problem is happening (highlighted).
Before Marketo: <!--[if mso]>
After Marketo: <!-- [if mso]>
Marketo is adding that additional space, which seems to be causing Outlook to ignore the comment instead of reading it as Outlook specific code. I tested it both ways in Litmus and that's what happens. Does anyone know how to keep Marketo from adding that space?
Solved! Go to Solution.
We haven't seen this before but have been fixing a bunch of issues related to MSO conditional comments. Can you email me with the exact HTML you've added to your email so we can look into it? email@example.com
I've confirmed that we have a bug here. I'll keep you updated but I've alerted our engineering team. This was fixed a long time ago and seems to have re-surfaced.