Yes. it will work no problem-
there's three details to make sure you take care of-
need to add the other site's domain to the list of allowed referrers in
formmail's config section.
need to add the email used for the recipient to the list of allowed
recipients (or add the entire domain to allowed recipients)
use a full absolute http: path for the value of a "redirect" in the form, if
you use one.
I have forms for a couple of non-profits whose hosting allows no scripting;
that are all using one formmail script on a different domain.
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