Marketo Adding Space in MSO Comments

[Dayna_Wellman3]

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?

[Justin_Cooperm2]

Hi Dayna,

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? jcooperman@marketo.com

[Justin_Cooperm2]

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.

[Justin_Cooperm2 · Accepted solution]

This has now been fixed!