Phone Appending
Verified B2B email addresses and direct mobile phone records for decision-makers in Phone Appending. Delivered in 48 hours under guaranteed <1.4% bounce SLA.
Key Segments & Sub-Sectors Covered
Decision-Maker Job Titles
Delivered Data Attributes
How We Verify Phone Appending
Mail Server Handshake
We query primary MX servers to confirm active corporate mail exchangers.
SMTP Handshake Ping
We ping the specific recipient mailbox without ever sending an email.
Named Researcher Check
A researcher confirms seniority, active employment, and direct phone line.
Opt-Out & DNC Scrub
Scrubbed against global suppression, Robinson, and TPS do-not-call registries.
Frequently Asked Questions
What does Phone Appending deliver exactly?
Your input file returns with direct dials and mobiles matched to named contacts, each labeled by line type and validity status so dialers and reps know what they are calling.
How do you handle do-not-call rules?
Every number is screened against federal and state DNC registries before release, and flags are preserved in the output so downstream dialing logic stays compliant.
Why do mobile match rates differ from landlines?
Mobile attribution relies on consented and opt-in sources, so we report honest per-type match expectations up front instead of inflating headline numbers.
Can you reverse-lookup existing numbers?
Yes, reverse matching attaches names, titles, and employers to phone-first files, useful for inbound lead enrichment.
Test 50 verified contacts from Phone Appending free
Receive 50 human-checked records with direct phone dials and a written <1.4% bounce SLA in 48 hours. Zero credit card required.