What IPs do my subscribers use?

[Dawn_Beam]

I'm trying to find out what inbox providers my subscribers use.  Do they have outlook, gmail, yahoo etc...

Does Marketo provide this information/how do I get it? 

Thanks. 

[Josh_Pickles]

Hi Dawn,

Marketo does not provide this detail, however, there are tools out there that can help with this. Litmus and Email on Acid are examples of email tools that can help provide you with this insight.