Here's the straight answer:
Email: Yes, but follow CAN-SPAM rules. Include unsubscribe options. Be responsible.
Cold Texting: No. US law requires double opt-in for SMS marketing. These leads haven't opted in. Don't text them.
Cold Calling: Risky. While the data is legally obtained, the USE of that data is your responsibility. Key issues:
Phone numbers are NOT scrubbed against the Do Not Call list
TCPA regulations apply
We are NOT a cold calling platform and don't recommend calling these numbers
Our recommendation: Use the data for omnipresent marketing (email, retargeting, Facebook audiences, direct mail) rather than phone-based outreach.
The laws for obtaining data and using data are different. We ensure legal acquisition. You're responsible for legal use. Consult your attorney if unsure.