You find out too late
You do not learn that a list is dirty until the campaign report comes back. By then the bounces are already logged against your sending reputation — and reputation is far slower to rebuild than it is to lose.
Lists rot quietly. People change jobs. Companies consolidate domains. An address that worked at your last send is a hard bounce at this one. The more engaged your list looked six months ago, the more confidently you will send to it now.
How it works
- 1Upload a CSV. Any layout works. We find the email column for you.
- 2We verify every row — syntax, MX and mailbox, plus disposable, role-based and catch-all flags.
- 3Download the annotated file and import only the valid segment into your ESP.
Read the results like this
- Valid — send.
- Invalid — delete, not suppress. These are your hard bounces.
- Catch-all or unknown — segment separately. Send to them on their own, watch what happens, and never mix them into your main send.
- Role-based — fine for transactional and support lists, poor for marketing.
- Disposable — delete, then add verification at signup so they stop arriving.
Why BounceLayer for list cleaning
- No subscription. Cleaning a list is an occasional job. Buy a one-time pack, like $14.99 for 5,000 addresses or $34.99 for 25,000, and stop.
- Credits never expire, including after you cancel. Clean in January, clean again in July, same balance.
- No code required. The dashboard flow needs nothing but a CSV.