Email List Cleaner
Paste a messy list of email addresses and clean it — remove duplicates, validate format, lowercase, and sort.
What Does This Tool Do?
Processes a list of email addresses (one per line, or comma/semicolon separated) to remove duplicates, filter out invalid-looking addresses, and optionally sort and lowercase the results.
Key Features
Validation
Removes addresses that don't match email format.
Deduplication
Removes duplicate email addresses.
Normalize
Lowercases all addresses.
Sort
Alphabetically sorts the cleaned list.
How to Use This Tool
- Paste email addresses (one per line, comma, or semicolon separated).
- Choose cleaning options.
- Click Clean.
- Copy the clean list and count.
How It Works
The input is split by newlines, commas, and semicolons. Each entry is trimmed, optionally lowercased, then tested against a basic email regex. Duplicates are removed using a Set.
Common Use Cases
💡 Email Marketing
Clean subscriber lists before importing to email platforms.
💡 CRM
Deduplicate contact databases.
💡 Data Cleaning
Normalize email lists exported from different systems.
Frequently Asked Questions
Does it verify that emails are real?
No — it only checks the format (something@something.something). It cannot verify whether an email address actually exists without sending a message to it.
Related Tools
Link to This Tool
Copy and paste the code below to link to this tool from your website:
<a href="https://adedx.com/tools/email-list-cleaner/">Email List Cleaner — AdeDX Free Online Tools</a>