Jumping straight into a full blast on a cold fax list—where contacts don’t know you or haven’t interacted recently—can backfire with low response rates, complaints, or even blacklisting. Warming up your list gently helps build trust, improve deliverability, and maximize campaign success.
Here’s how to do it step-by-step:
1. Verify and Clean Your List
Remove invalid, disconnected, or duplicate fax lists fax numbers.
Scrub against Do Not Fax (DNF) registries and your own opt-out lists.
2. Segment Your List
Group contacts by industry, location, or last interaction date (if any).
Start with smaller segments to test and adjust your approach.
3. Start with a Soft Introduction Fax
Send a polite, non-salesy message introducing your company and services.
Keep it brief, respectful, and offer an easy way to opt out.
Example: “We wanted to introduce ourselves and let you know about our services. Please reply or opt out if you prefer no future faxes.”
4. Space Out Your Initial Sends
Don’t fax everyone at once. Stagger your sends over days or weeks.
This avoids overwhelming recipients and reduces spam complaints.
5. Follow Up Gradually with More Specific Offers
After initial warm-up, send targeted offers or content tailored to each segment.
Keep tone helpful, not pushy.
6. Track Engagement and Clean Continuously
Remove or suppress numbers that opt out or don’t respond after multiple attempts.
Use feedback to refine your messaging and targeting.
Why Warm-Up Matters
Builds familiarity, making recipients more open to your messages.
Reduces risk of being flagged as spam or blacklisted.
Improves overall campaign ROI by focusing on engaged prospects.