---
url: "https://smashsend.com/tools/email-spell-checker"
title: Free Email Spell Checker — Catch Misspelled Emails in JavaScript | SMASHSEND
domain: smashsend.com
locale: en
type: other
words: 161
cited_by: 0
indexed_by: stealpage
---

## Frequently asked questions

### Does the checker send my users' emails anywhere?

No. The library runs entirely in the browser and makes zero network requests. Addresses are compared against a local dictionary of popular domains and TLDs, so nothing is ever transmitted or stored.

### Is this the same as email verification?

Not quite — it's complementary. The spell checker fixes obvious typos at the point of entry (like _gmaik.co → gmail.com_). To confirm an address is real, deliverable, and not disposable, use SMASHSEND's Email Verification add-on, which checks MX records, mailbox existence, and known spam-trap domains.

### Can I customize the suggestions?

Yes. Pass your own `domains`, `topLevelDomains`, threshold values, or even a custom distance function to `run()` to tune it for your specific audience.

### How much does it cost?

The library is free and open source (MIT). It's built and maintained by the team behind SMASHSEND — the email platform that helps you turn every clean signup into a customer.