/ email verification engine
Verify email
at the speed of now
Catch invalid, risky, and disposable addresses before they hurt your deliverability. Built for speed and accuracy — at any scale.
/ how it works
Five layers. Every address resolved with intent.
Cheap checks run first; the expensive SMTP probe runs last and only when it needs to. That is how we stay fast without giving up accuracy.
layer 01
Syntax
RFC-compliant format and normalization checks — instant, no network.
layer 02
MX / DNS
Resolve and cache mail-exchange records to confirm the domain can receive mail.
layer 03
Disposable & role
Flag throwaway domains and role inboxes that pollute your lists.
layer 04
Catch-all
Detect accept-all domains so you know which results to trust.
layer 05
SMTP probe
Confirm deliverability at the mailbox level without ever sending mail.
built to scale
The pipeline is engineered for throughput — not just correctness. Every layer runs in parallel so a 100k-address list resolves in minutes. Volume does not slow us down.