# Normalize and Clean Email Addresses Free | Dedupely

> Lowercase every address, strip plus tags, remove Gmail dots and fix typo domains like gamil.com. Flags role and disposable addresses. Free and in your browser.

- URL: https://dedupe.ly/de/tools/email-normalizer
- Section: tools
- Site index: https://dedupe.ly/llms.txt
- Any page: append `.md` to its URL for this plain-text form

---

## Normalize email addresses in a list

Lowercase every address and catch the typos before they reach your CRM.
[Use in Claude](https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Dedupely%20Email%20normalizer&connectorUrl=https%3A%2F%2Fdedupe.ly%2Ftools%2Fmcp)
CSV file
Or paste rows here
First row is a header
Run
Free for files up to 2,000 rows and 10 runs a day.
[Sign up for Dedupely to go further.](https://v2.app.dedupe.ly/signup)

### Find the same inbox written five ways

John.Smith+promo@gmail.com and johnsmith@gmail.com reach one inbox. A CRM stores them as two people. Both get the same sequence.
**This tool rewrites each address to its plain form and lists what changed.**

### Catch gamil.com before the bounce

A typo domain looks fine in a spreadsheet. It bounces on the first send. The contact is lost and the sender score takes the hit.
**Dedupely finds the contacts that share an inbox and merges them inside your CRM.**

### Use it from a script or an AI agent

[Use in Claude](https://claude.ai/customize/connectors?modal=add-custom-connector&connectorName=Dedupely%20Email%20normalizer&connectorUrl=https%3A%2F%2Fdedupe.ly%2Ftools%2Fmcp)
POST https://dedupe.ly/tools/api/email-normalizer
{ "emails": ["John.Smith+promo@Gmail.com", "ellis@gamil.com"] }
MCP https://dedupe.ly/tools/mcp (tool: normalize_emails)
Docs https://dedupe.ly/tools/api/openapi.json
[OpenAPI document](https://dedupe.ly/tools/api/openapi.json) ·
[API index](https://dedupe.ly/tools/api) ·
[llms.txt](https://dedupe.ly/llms.txt)

### More free tools

[CSV dedupe](https://dedupe.ly/tools/csv-dedupe)
[Name splitter](https://dedupe.ly/tools/name-splitter)
[Email normalizer](https://dedupe.ly/tools/email-normalizer)
[List merger](https://dedupe.ly/tools/list-merger)
[Domain extractor](https://dedupe.ly/tools/domain-extractor)
[Company normalizer](https://dedupe.ly/tools/company-normalizer)
[Test data generator](https://dedupe.ly/tools/test-data-generator)

### Get started for free

20 free trial merges and as much free support as you need to get your duplicates under control.
[Talk to sales](https://meetings.dedupe.ly/meetings/hampus-isaksson/dedupely-zoom-schedule)[Try for free](https://v2.app.dedupe.ly/signup)
[Or sign up with Google](https://v2.app.dedupe.ly/signup/google)
Running CRM cleanup for clients? [See the Partner Program](https://dedupe.ly/become-a-partner)
Skip to content