How to Check a List of UOL and BOL Email Addresses at Once
If your Brazilian list mixes UOL and BOL addresses, the bulk UOL and BOL email checker checks them together: typos, duplicates and dead domains for every row, then a live question to the mail server for the first 10. Only uol.com.br and bol.com.br count as rows.
BOL accounts are cancelled after four months of non-use, so an old @bol.com.br contact may no longer exist.
What the servers say
When our checking server offered made-up addresses (uol.com.br on 12 October, bol.com.br on 13 October 2026), both answered at the recipient step with 550 5.1.1 Recipient address rejected: User unknown in relay recipient table, word for word the same, and both rejected fresh ones again on 8 November.
Why the two are one provider here
BOL is part of the UOL group, represented by Universo Online S.A. (UOL norms), and the two domains answered checks the same way. BOL's help page says accounts are cancelled automatically after four months without use.
The by-hand way
- Filter to the two domains.
- Remove duplicates and typos.
- Test one address at a time with the UOL email checker.
In the tool
Paste the list, read the flags, download the clean list, and let the first 10 go to the mail server for a live answer.
What this check cannot do
- UOL doesn't publish how its servers answer mailbox checks; the handling is from our own checks, which can change.
- Other Brazilian webmail is checked as a normal address.
- A +tag repeat is marked as possibly the same inbox, not merged.
- Valid means the mailbox exists today, not that anyone reads it.
Next: the whole list
Use the verify page for the rest: the first 100 checks are free with a Google sign-in, no card.
Try it now
Paste your list into the bulk UOL and BOL email checker.
Common questions
Is BOL part of UOL?
Yes. BOL (Brasil Online) is part of the UOL group, and its mail server's rejection matched UOL's word for word in our checks.
Does BOL cancel inactive accounts?
BOL's help says accounts are cancelled automatically after four months without use.
Can you check UOL and BOL addresses in bulk?
Yes. Both rejected made-up addresses at the recipient step, and again on 8 November 2026, so a row's result comes from the provider's server.
Are other Brazilian webmail domains included?
No. Only uol.com.br and bol.com.br count as rows; other domains are checked as normal addresses.
Is it free?
The whole-list pass is free, about 10 addresses are asked live, and a Google sign-in gives free checks for the rest.
Check your list before you send
Real mailbox checks over SMTP, and nothing is sent to the address. Sign in with Google and your first 100 email checks are free, no card. Plans for bigger lists are on the pricing page.