OrbiSearch

OrbiSearch is an email verification service specialising in the hardest categories of B2B email validation: catch-all domains, Secure Email Gateways like Mimecast and Proofpoint, and greylisted servers. These are the addresses every other validator gives up on and flags as "risky" or "unknown" — leaving you to guess whether your prospect is reachable or a waste of a send.

Catch-all domains are the single hardest category. They accept every address at their domain by default, so a simple SMTP probe cannot tell a real user apart from a phantom one. OrbiSearch resolves them instantly with multi-layer validation that combines a standard SMTP check with proprietary mailbox detection. The result is a real verdict — deliverable or not — on the addresses your competitors discard.

Benchmarked on real cold outreach campaign data, OrbiSearch stops 96.3% of hard bounces with a 3.7% false positive rate — ahead of BounceBan (94.6%), Icypeas (78.1%), and Enrichley (67.1%) on the same 538-bounce test set. That is the lowest false positive rate among catch-all validators on the market.

OrbiSearch never sends a real email. Verification happens in seconds via SMTP without touching the recipient's inbox, which means zero risk to your sender reputation, no warming up domains, no bounces arriving in your inbox, and no spam complaints.

Every address you submit runs through syntax validation, DNS and MX record lookups, role-based account detection, disposable domain detection, and full mailbox existence checks. Results come back with a clear status (safe / risky / invalid / unknown) plus a plain-English explanation of why.

For volume, OrbiSearch processes 10,000 emails in under 10 minutes — at a sustained 1,000+ emails per minute — so you can kick off an outreach campaign the same day, not three days later. Single real-time verification via REST API, bulk CSV upload, and webhook callbacks for asynchronous workflows are all included.

Pricing is pay-per-use and credit-based, from $0.0002 per validation. No monthly subscription, no minimum commitment, scale up or down as you need. New users get 500 free validations on signup, no credit card required.

Traditional validators work by sending real emails and checking for bounce messages. That approach takes 48 to 72 hours, produces high false positive rates on catch-all domains, and risks hitting the deliverability of whatever inbox you send from. OrbiSearch's mailbox-detection approach skips the send entirely and returns a verdict in seconds.

OrbiSearch is built for indie founders, growth teams, RevOps, recruiters, and developers who need email verification that just works — no opaque "risky" buckets, no expensive monthly commitments, and no results that fall apart when you run them through a real campaign.