Here's the case:
I have 1000s of contacts and each contact has a "Profile Interest".
Categories for "Profile Interest" are "PLC", "Motors", "RFID", "Motion" etc.
I want to separate each contact based on their "Profile Interest". However,
the issue that I run into is that John Doe can have more than one of the
above Profile Interests. He might have an interest in PLC and/or Motion. So
when I send out a campaign/email to all the contacts who are interested in
PLCs and/or Motion, I don't want John Doe to receive two emails.

Can anyone please advise?

Thank you,
Regards,
Sharjeel