Do many here have problems with contacting providers via e-mail and their messages end up in the provider's junk mail area and not in their inbox?

Do the providers reading this post check your junk mail areas for messages from clients or potential clients with any frequency?

I ask since sometimes I don't get any form of response when sending an initial contact e-mail message to a provider and I have NO way of knowing if it's due to lack of interest (or something else causing them not to respond) or if they are just not receiving the message due to it being flagged as junk mail or spam.

Peace...