Spot throwaway inboxes before they sign up
Disposable addresses work for a few minutes, then disappear. We flag them as Risky with the reason, so you can block or review them.
- Six checks on every address
- A plain reason with every result
- Slow servers never cost a second credit
- 200 free credits, no card
Examples
What it looks like in your results
Result rows with the category and the reason you will see.
How it works
How we detect it
This check runs on every address, as part of the same credit.
- 01
Check the domain
We match the domain against a list of known disposable email services.
- 02
Keep the list current
New throwaway services appear all the time. We refresh the list from a maintained open-source source every 12 hours.
- 03
Flag it with a reason
Matching addresses come back Risky with the reason code disposable and the reason "This is a throwaway inbox that will likely stop working soon."
What to do
What to do with these addresses
Every result comes with the reason, so you can decide row by row.
Block at sign-up
Use real-time checks to ask for a real address before the account is created.
Remove from lists
Throwaway inboxes stop working, so they rarely belong in a campaign.
Watch free trials
Disposable sign-ups often mean trial abuse.
Related checks
Part of all six checks
Every address goes through all of them, in order.
Catch-all detection
Some domains say yes to any address, so no one can confirm the mailbox.
Learn moreFAQ
Disposable email questions
Short answers about this check.
Still have a question? Talk to us.
Check your list before you send it
Start with 200 free credits. Pay per credit after that.