How bad is this list? Find out for free.
Upload up to 50,000 addresses and get an estimate of your bounce rate before you pay anything. Duplicates, typos, disposable and dead domains are counted exactly; mailboxes are checked on a sample.
Free list check
Free estimate. Verify the full list for a result on every address.
Free list check, done right.
Up to 50,000 addresses
A random sample of a bigger list works too.
Exact where it can be
Syntax, duplicates, disposable, role addresses, typos and dead domains, counted on every address.
Real mailbox sample
A sample is checked live on the mail servers to estimate the rest.
Costs no credits
10 free list checks per day.
Decide with numbers
See what a full verification would save before you buy.
Three steps. No setup.
Upload the list
Or paste addresses.
We analyse it
Exact checks plus a live mailbox sample.
Read the estimate
Then verify the full list if it is worth it.
Free tool
Free · 10 checks a day.
- 100 free credits to start
- Every tool in every plan
- Pack credits never expire
Questions, answered.
The short version of how Confirmail works.
No: it is an estimate. Everything that needs no mailbox connection is exact; mailbox results come from a sample. A full verification gives a result for every address.
More tools in the same account.
Your next campaign deserves real inboxes.
Create your account and get 100 credits on us. No card, no commitment, results in seconds.