Mailbox signals
Assess address format and configured verification signals through the connected verifier service.
Evaluate syntax, domain and mailbox signals before sending. Reduce avoidable bounces and keep verification activity accountable.
Built as part of the WorldsContact platform, so usage, credit movement and the next workflow step stay connected.
Assess address format and configured verification signals through the connected verifier service.
Check up to 100 unique emails per current run with duplicates removed automatically.
If the upstream service fails, the corresponding credits are returned automatically.
A clear operating path helps teams understand what the tool does, what it returns and where human review still matters.
Enter one address or upload a deduplicated business list.
Evaluate syntax, domain, MX, mailbox and configured risk signals.
Separate deliverable, risky, invalid and inconclusive records before sending.
Move from contact data to a verified, governed workflow without rebuilding your audience between products.
Build focused B2B contact lists using professional identity and company context, then move verified records into a responsible outreach workflow.
Explore Email Finder →Plan personalised business communication, manage suppression and opt-out workflows, and learn from delivery and engagement outcomes.
Explore Email Campaigns →Review domain and mail-server configuration so operational teams can catch preventable issues before they affect a campaign.
Explore Deliverability Tools →Your organisation remains responsible for the lawful basis, audience, notices, sender identity, suppression and content of its communications.
Review trust and complianceOpen a free workspace, qualify for a Business trial or plan a governed team rollout.