Free tool
Clean up an email list
An address typed as “gmial.com”, the same person three times, an old provider that closed: every bounce hurts your sender reputation. Drop your list, review the suggested fixes, download a clean file.
One address per line, or columns copied from a spreadsheet (name, email…).
Your list is read by your browser and never leaves your computer: no address is sent to our server or anyone else, and nothing is kept.
Cleaning a list does not replace consent: Canada's Anti-Spam Legislation (CASL) governs the sending of commercial messages.
Line by line
| Row | Address | Status | Details |
|---|
No rows in this filter.
Why clean a list?
Every message sent to an address that does not exist comes back as a “bounce”. A few are normal; many tell Gmail, Outlook and Yahoo that you do not look after your list.
Newsletter services (Mailchimp, Brevo, Cyberimpact, Constant Contact and others) watch the bounce rate of each account and can pause sending when it climbs. An old list, a sign-up sheet typed by hand or a merge of several files are the usual culprits.
What the tool checks
Removed
Malformed addresses
No @, two @, a space in the middle, a domain without a dot, forbidden characters.
Spaces, “mailto:” and “Name <address>” are cleaned automatically.
To review
Domain typos
gmial.com, hotmial.com, outlok.com, yahooo.com, gmail.con: compared with the most common providers in Quebec and Canada.
Accept each fix one by one, or all at once.
Removed
Duplicates
The same address twice, even with different capitals or extra spaces. The first occurrence is kept.
Duplicates go to the rejects file.
Flagged
Role addresses
info@, admin@, noreply@: shared mailboxes nobody subscribed to personally, often filtered or refused by newsletter tools.
A box lets you remove them.
Removed
Disposable addresses
Mailinator, Yopmail and the like: boxes that self-destruct after a few minutes.
Nobody will read your message there.
To watch
Providers that closed
Some Internet providers have closed, or are closing, their email service (b2b2c.ca, quadro.net, ezlink…).
Ask these people for a new address.
What the tool leaves alone
Dots and “+” in Gmail addresses. For Gmail, marie.tremblay@gmail.com and marietremblay+news@gmail.com reach the same mailbox. We point it out (“same mailbox, likely”) but never merge them: the person may have used the +alias on purpose to sort your messages, and other providers do not all treat dots this way.
Unknown domains. An organisation's domain (@my-organisation.ca) is never “corrected”: only domains close to a well-known provider get a suggestion. A domain we know (hotmail.ca, live.ca, me.com) is never changed.
Whether the mailbox exists. A well-formed address can still be closed. Only a real send (or a paid verification service) can tell. This tool contacts no server: that is why your list stays private.
Next steps
- Download the clean listSame columns as your file, with the addresses you accepted to correct. It opens in Excel with accents intact (UTF-8).
- Look at the rejectsEach line has its reason. A malformed address can sometimes be fixed by calling the person.
- Import into your newsletter toolIt will then handle bounces and unsubscribes. Check your own domain first with our SPF, DKIM & DMARC checker.
