SLUICE

pricing · founding

Start free.
Pay for depth.

The free report routes any address to send, suppress, review, or recheck. Catch-all quarantine detection and the SMTP mailbox probe are the deep tier — the part that decides whether a “valid” catch-all is really safe to send. Inconclusive rows are refunded; you only pay for rows we could grade.

free report

$0

paste · route · no signup

  • Up to 200 addresses per run
  • send / suppress / review / recheck routing
  • Nothing stored — runs and is discarded
  • No catch-all quarantine, no SMTP probe
run a free report →

standard

$0.004/email

full lists · syntax · MX · role + disposable

  • Pay as you go — no subscription, credits never expire
  • No 200-row cap — route entire lists
  • Downloadable recommended_action CSV
  • Unknown rows refunded to your balance
buy standard credits →

Run on demand — no subscription required. Regular volume? Pro is $39/mo for 10 000 standard + 1 000 deep credits a month (~20% below pay-as-you-go) and priority processing.

Standard and deep credits are independent: a standard balance won't cover a deep verification, and a deep job won't drain your standard balance. Choose a tier per upload.

Have a list of more than 100 000 rows? Email us — volume pricing kicks in after that.

Refunds for inconclusive rows.

When the cascade can't reach a verdict — greylist, vendor outage, transient DNS error — the row is tagged recheck and the credit returns to its tier's balance. You only pay for rows we could actually grade.