Email list cleaning
Clean your email list before your next campaign.
Email list cleaning removes addresses that are likely to bounce or cause problems, so your next send goes to people who can actually receive it.
No monthly subscription · Credits never expire · Unknown results use no credits
Invalid emails
Addresses with broken syntax, domains that don't exist, or mailboxes that reject mail are marked Failed. These are the addresses most likely to hard bounce.
Bounced addresses
People change jobs and abandon inboxes. An address that worked last year may bounce today. Regular cleaning catches these before they hurt your sender reputation.
Disposable emails
Temporary inbox services create addresses that expire quickly. MailGuard flags known disposable domains so you can decide whether to keep them.
Catch-all domains
Some domains accept mail for any address, which makes it impossible to confirm a specific mailbox. These usually come back as Unknown so you can review them separately.
Unknown results
When a server doesn't give a clear answer, the address is marked Unknown. Unknown results use no credits.
Why cleaning helps reduce risk
Fewer bounces and fewer dead addresses mean cleaner sending data. Cleaning doesn't guarantee deliverability, but it removes one of the most common, avoidable problems.
Frequently asked questions
How often should I clean my email list?
Before any large send to an older list, and roughly every few months for lists you mail regularly.
Does list cleaning guarantee inbox placement?
No. Inbox placement also depends on content, sending reputation, authentication, and engagement.
Should I delete Unknown results?
Not automatically. Review them, especially catch-all addresses, and decide based on how you got the contact.
Related
Ready to check your list?
Pay only for Passed and Failed results. Credits never expire.
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