Hi.
My host requires a parameter to be included when sending emails. Something to do with spam filtering.

This identifies the domain of the email address used to send messages to.
Where would I put this?

Thanks
Michael

Freeform piggy-backs on native EE email behavior. Whatever needs to be changed in EE to accommodate your host will allow Freeform to work there as well. I recommend checking with the EE forums, though you likely already have. Let us know. Sorry the solution was not available here.

mk