Normalize an email list in the tool
Paste one email address per line into the input box. The template trims whitespace, lowercases entries, removes duplicate lines, and removes blank lines. The cleaned list appears in the read-only output box.
How to use the template
- Paste your list into the input textarea, using one email address per line.
- Review the generated pipeline steps and the result in the read-only output textarea.
- Use Copy to copy the result, or use Download to save the plain-text output.
Use Edit this template in Tool Combiner if you need to change the supplied pipeline.
What the pipeline changes
- Trims leading and trailing whitespace.
- Converts entries to lowercase.
- Removes duplicate lines.
- Removes blank lines.
Limitations
Enter one email address per line. This template does not validate email format or check whether a domain exists. The page does not document a maximum input size or performance threshold. Input such as Name <[email protected]> is not confirmed for this template.
Frequently Asked Questions
Why should email addresses be lowercased before deduplication?
This template lowercases entries before deduplication. Entries that become identical after lowercasing can then be treated as duplicate lines.
Will this validate that the emails are correctly formatted?
No. This template cleans and deduplicates; it does not validate email format. Use the Email Validator separately for format validation.
Is my email list uploaded to your servers?
No. All processing runs entirely in your browser. Your list never leaves your device.