accuracy

Email verification

Know if an email is deliverable before you send.

Accuracy verifies the address, domain, mail server, and mailbox to identify invalid and risky emails before they hurt your campaigns.

  • No credit card required
  • Instant result
john.doe@example.comValid

This email is

Deliverable

Syntax
Pass
Domain
Pass
MX record
Pass
SMTP
Pass
Catch-all
No
Disposable
No
Role account
No
Checked in 1.42 secLearn about results

Why verify emails?

Reduce bounces

Remove invalid emails and reduce bounce rates before they affect your campaigns.

Protect reputation

Maintain a healthy sender reputation and reduce spam complaints with cleaner data.

Improve delivery

Help more messages reach the inbox by keeping risky addresses out of your lists.

Keep data clean

Stop bad data at the source and improve the quality of every connected workflow.

How Accuracy verifies an email

  1. 1

    Syntax

    Check the address format and structural integrity.

  2. 2

    Domain

    Verify that the domain exists and is reachable.

  3. 3

    DNS and MX

    Inspect DNS records and mail exchange servers.

  4. 4

    SMTP

    Confirm the mailbox with a live SMTP handshake.

  5. 5

    Risk checks

    Detect catch-all, disposable, and role accounts.

  6. Result

    Receive a clear, detailed verification outcome.

What Accuracy checks

Syntax validation

Confirm that the address follows a valid email format.

Pass

Domain validation

Check that the domain exists and is configured.

Pass

MX verification

Confirm that the domain can receive email.

Pass

SMTP verification

Check whether the destination mailbox responds.

Pass

Catch-all detection

Identify domains that accept every address.

No

Disposable detection

Identify temporary and disposable addresses.

No

Verify your entire list

Upload a list and let Accuracy verify thousands of emails in minutes. Download clean, actionable results.

Upload .csv, .json, .xls, or .xlsx files securely
Try bulk verification

Verify emails in real time

Use our API to verify addresses as they enter your application or workflow.

POST /v1/verify
{
  "email": "john.doe@example.com"
}
Explore the API

Frequently asked questions

What is email verification?

Email verification confirms whether an address is valid, reachable, and likely to receive a message.

How does Accuracy verify an email?

Accuracy performs layered syntax, domain, DNS, MX, SMTP, disposable, catch-all, and role-account checks.

Is verification real time?

Yes. Single-address checks are designed to return a result quickly enough for signup forms and application workflows.

Do you send emails?

No. Accuracy verifies the address without sending an actual email message to the recipient.

Check before you send.

Keep invalid emails out of your lists and applications with fast, layered verification.

Verify emails freeView pricing