How do I clean an email list before importing it?
Pull out the addresses, lowercase them, remove duplicates and invalid formats, and fix obvious domain typos before you import. Paste the list here and the tool does all five steps at once.
- Paste your list or open a CSV or text file.
- Leave lowercase, dedupe and typo fixing on unless you have a reason not to.
- Turn on role address removal if you are building a sales list and want people, not shared inboxes.
- Check the removed entries under the list to see what changed.
- Copy the list or download it as a one-column CSV.
Examples
Messy pasted list
Input
Jane.Doe@Example.com, bob@gmial.com <info@acme.io> not-an-email jane.doe@example.com
Result
jane.doe@example.com bob@gmail.com info@acme.io
Frequently asked questions
Does this verify that a mailbox exists?
No. It checks the format and fixes known typos. Checking whether a mailbox accepts mail needs an SMTP check from a server, which would mean uploading your list. This tool never does that.
Is it safe to paste a customer list here?
Yes. Everything runs in your browser and nothing is sent anywhere. You can disconnect from the internet after the page loads and it still works.
Which typos does it fix?
Common misspellings of gmail.com, hotmail.com, yahoo.com, outlook.com and icloud.com, such as gmial.com and hotmial.com. Each fix is listed so you can review it.
What is a role address?
A shared inbox like info@, sales@ or support@. Many email platforms advise against sending marketing email to them because they tend to have more complaints and bounces.