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About

Email verification that tells you why

SimpleCold tells you whether an email will land, and why, in plain words. No scores to decode and no guessing on catch-all domains.

What it does

Check addresses before you send to them

Bad addresses bounce, and bounces hurt the reputation of the domain you send from. SimpleCold finds them first.

Verifies any address

Check one address, paste a list, upload a CSV or call the API. Every address goes through the same checks.

Gives a reason with every result

Each address comes back deliverable, risky or undeliverable, with a sentence that says what we found.

Keeps your file intact

CSV uploads come back with every original column plus the result columns. Duplicate rows are removed and not charged.

What we check

Six checks run on every address

They run in order and stop as soon as an address fails, so you never pay twice for the same answer.

  1. 01

    Syntax

    Is the address written correctly? Catches missing @, spaces and bad characters.

    Learn more
  2. 02

    Typos

    Is it a common misspelling like gmial.com? We suggest the likely fix.

    Learn more
  3. 03

    Disposable and role

    Is it a throwaway inbox, or a shared address like info@ or sales@?

    Learn more
  4. 04

    Domain and MX

    Does the domain exist and have a mail server? Dead and parked domains fail here.

    Learn more
  5. 05

    Catch-all

    Does the domain accept every address? If so, we say so instead of guessing.

    Learn more
  6. 06

    Mailbox

    We ask the mail server whether this exact mailbox exists, without sending an email.

    Learn more

What we believe

How we build SimpleCold

Three rules every feature has to follow.

Say why

Every result comes with a reason a person can read.

Never guess

If a mail server will not confirm a mailbox, we mark it risky and say so instead of calling it deliverable.

Charge fairly

One credit per unique address. Asking again about a slow server costs nothing, and there is no subscription.

Want to talk?

Questions about results, pricing or the API? Write to us or book a call.

Check your list before you send it

Start with 200 free credits. Pay per credit after that.