Verify any email address with 6 checks — syntax validation, MX records, SMTP handshake, disposable detection, role-based filtering, and free provider analysis. Stop bounces before they destroy your sender reputation.
Join Lume to bulk-verify your contacts, remove bouncy addresses, and protect your sender reputation — automatically.
Email bounces occur when a message can't be delivered to the recipient's address. Hard bounces (invalid addresses) permanently damage your sender reputation. Soft bounces (full inbox, server down) are temporary but still signal trouble to mailbox providers. A bounce rate above 2% can get your domain flagged or blacklisted.
Invalid address, non-existent domain, or deactivated mailbox. These are permanent failures — remove immediately. Even 1% hard bounces can trigger Gmail blocks.
Temporary services like Mailinator, Guerrilla Mail, 10MinuteMail. These addresses self-destruct, guaranteeing future bounces. Never keep them in your list.
Addresses like info@, admin@, support@ go to groups, not individuals. They have higher complaint rates and many ESP policies prohibit sending to them.
Use real-time verification at signup, regularly clean your list, respect unsubscribes, and warm up new domains gradually. Lume automates all of this for you.
Lume verifies your contacts in bulk, removes risky addresses, and protects your sender reputation — before you hit send.