Domain Intelligence
Last Updated:

Bol.com.br

Safe to Send

Bol.com.br is operated by UOL Group. The domain runs 1 mail exchange and SMTP is responsive, with 2 of 3 authentication standards in place.

Safe to Send
Verify Mailbox

Verify @bol.com.br emails

Live SMTP handshake against bol.com.br mail servers. No email is sent. 10 free per day, no signup.

@bol.com.br
No email sent No signup Real-time SMTP

Trusted by 400,000+ senders

4.9/5
From 8,500+ verified reviews
Plugged the realtime API into our signup form on a Saturday afternoon. Caught 14 disposable domains in the first hour. Setup was honestly easier than the docs implied. Marcus Tanaka · Co-founder, B2B SaaS
SOC 2 Type II GDPR CCPA 99.7% Accuracy
Disposable
No
Persistent addresses, not throwaway
SMTP Live
Yes
Mail server responds to SMTP handshake
MX Records
1
Mail exchangers

Mail Exchange (MX) Records for bol.com.br Mail Exchange records. They tell other mail servers which hosts are responsible for receiving email at this domain, in priority order. Lower priority numbers are tried first.

1 RECORD
#20
mx3.bol.com.br 200.147.41.201
Reachable
SMTP Handshake Simple Mail Transfer Protocol. We open a live SMTP connection to the primary MX and read the greeting banner. A response confirms the mail server is alive and accepting connections. Responsive
BANNER220 a2-selva8.bol.com.br ESMTP
Primary mail server accepted SMTP connection and returned a banner during the live audit.

bol.com.br Email Authentication SPF · DKIM · DMARC

2/3 PASS
SPF Sender Policy Framework. A DNS record listing which servers are allowed to send mail for this domain. Receivers reject or flag mail from unauthorized servers. Pass
TXTv=spf1 include:spf.bol.com.br include:spfexcl.uol.com.br include:relays.uol.com.br include:spfcloud.bol.com.br -all
Authorized senders are defined and pass SPF policy.
DKIM DomainKeys Identified Mail. The sending server cryptographically signs outbound mail with a private key, and receivers verify the signature using a public key in DNS. Missing
No DKIM signature detected on common selectors for bol.com.br.
No DKIM signature was detected. Receivers cannot verify the integrity of outbound mail.
DMARC Domain-based Message Authentication, Reporting & Conformance. Tells receivers what to do when SPF or DKIM checks fail: none, quarantine, or reject. None
TXTv=DMARC1; p=none; sp=none; pct=100; rua=mailto:dmarc@bol.com.br; ruf=mailto:dmarc@bol.com.br; fo=1
Monitoring only. Receivers take no action when SPF or DKIM fails.

bol.com.br Domain Registration WHOIS · Nameservers · Registrar

30 YEARS OLD
RegisteredMay 16, 1995
Last UpdatedDecember 12, 2025
ExpiresJanuary 1, 2028
Age30 years
TLD.br
Authoritative Nameservers (3)
  • eliot.uol.com.br
  • borges.uol.com.br
  • charles.uol.com.br
Registrant
Universo Online S.A.
Technical Contact
Contato Tecnico - UOL
l-bgp@uoldiveo.com·BRAZIL
About this Domain

About bol.com.br

bol.com.br is a Brazilian free email service operated by UOL Group (Universo Online), the largest Brazilian internet content and services company headquartered in Sao Paulo. BOL (Brasil Online) has been providing email services to Brazilian users since the early days of the internet in Brazil, offering webmail with storage, spam filtering, and mobile access.

bol.com.br supports SPF authentication and DKIM signing for outbound emails through UOL's mail infrastructure. DMARC policies are published to help protect against spoofing. UOL maintains active anti-spam measures and complies with Brazilian data protection legislation (LGPD).

The bol.com.br mail servers enforce recipient verification at the SMTP level, rejecting messages to nonexistent addresses. The domain does not function as a catch-all. UOL's infrastructure applies rate limiting on inbound connections, particularly from international senders or those with limited reputation history.

When sending to bol.com.br users, configure SPF, DKIM, and DMARC on your sending domain. Portuguese-language content is handled natively, but ensure proper UTF-8 encoding for accented characters. Follow Brazilian anti-spam regulations and maintain opt-in consent records. UOL responds well to properly authenticated mail from reputable senders.

Other Domains Similar to bol.com.br

Other free email provider domains we've audited. Click any one to see its MX records, authentication, and risk score.

indiatimes.com
Times Internet India
Active 1 MX · 3/3 Auth
r7.com
Record Group Brazil
Active 5 MX · 2/3 Auth
arcor.de
Vodafone Germany
Active 2 MX · 2/3 Auth
tutanota.com
Tuta GmbH
Active 1 MX · 3/3 Auth
hotmail.com.br
Microsoft Corporation
Active 1 MX · 3/3 Auth
naver.com
Naver Corporation
Active 6 MX · 2/3 Auth
fastmail.com
Fastmail Pty Ltd
Active 2 MX · 2/3 Auth
telstra.com
Telstra Australia
Active 1 MX · 2/3 Auth
gmx.com
1&1 Mail & Media
Active 2 MX · 2/3 Auth
yahoo.co.th
Yahoo Inc.
Active 1 MX · 2/3 Auth
mailfence.com
ContactOffice Group
Active 2 MX · 3/3 Auth
yahoo.co.uk
Yahoo Inc.
Active 1 MX · 2/3 Auth
email.com
email.com
Active 2 MX · 2/3 Auth
abv.bg
Netinfo Bulgaria
Active 2 MX · 2/3 Auth
yahoo.com
Yahoo Inc.
Active 3 MX · 2/3 Auth
nate.com
SK Communications
Active 1 MX · 2/3 Auth
t-online.de
Deutsche Telekom
Active 4 MX · 2/3 Auth
ig.com.br
iG Internet Group
Active 1 MX · 3/3 Auth
hey.com
Basecamp LLC
Active 1 MX · 2/3 Auth
freemail.hu
Index.hu Hungary
Active 1 MX · 1/3 Auth

More Email Verification Tools

Free single-address checks, bulk uploads, and APIs for plugging email verification into your own product.

Free Email Checker
Verify any single email address in real time, no signup required.
Bulk Email Verifier
Upload CSV or TXT lists of millions of addresses and verify them at once.
Real-Time Verification API
Validate addresses at the point of signup with sub-3-second responses.
Unlimited Verification API
Flat-rate API for high-volume senders. No per-check pricing.
API Documentation
REST endpoints, request examples, response codes, and SDKs.
Pricing
Pay-as-you-go credits and unlimited subscription tiers.

Common Questions About bol.com.br

Is bol.com.br a disposable or temporary email provider?
No. bol.com.br is not a disposable email provider. It is classified as Free Email Provider operated by UOL Group and addresses on bol.com.br are persistent rather than throwaway. Mail sent to a valid bol.com.br mailbox reaches a real recipient.
How do I verify if a bol.com.br email address is valid?
The fastest way to verify a bol.com.br email address is to use our free email checker. Enter any @bol.com.br mailbox at the top of this page and our system performs a real-time SMTP handshake against bol.com.br's mail servers, confirming whether the mailbox exists, is reachable, and is safe to send to. No email is ever delivered during the check.
Can I check if a bol.com.br email exists without sending a message?
Yes. Our real-time email verification API connects directly to bol.com.br's mail server, opens an SMTP session, and queries the mailbox using the RCPT TO command without ever transmitting an actual email. The server's response confirms whether the bol.com.br mailbox is valid, full, or non-existent. The recipient never receives anything and never sees the check.
What are the MX records for bol.com.br?
bol.com.br currently publishes 1 mail exchange (MX) record. The primary MX is mx3.bol.com.br, which is the first server contacted when other mail systems try to deliver email to a bol.com.br address. The full list with priorities and IP addresses is in the MX Records panel above. MX records tell sending servers where to route email for bol.com.br.
Does bol.com.br use SPF, DKIM, and DMARC email authentication?
bol.com.br has 2 of the 3 standard email authentication records in place: SPF, and DMARC (policy: none). Adding the missing layer(s) would tighten anti-spoofing protection and improve deliverability for legitimate bol.com.br mail.
Why do emails to bol.com.br bounce or get blocked?
Bounces from bol.com.br usually fall into three buckets: the mailbox doesn't exist (5xx user unknown), the inbox is full, or your sending domain isn't authenticated to bol.com.br's satisfaction. The fastest fix is to run each address through a free email verifier before you send, and to make sure your own SPF, DKIM, and DMARC are configured correctly so bol.com.br's receivers trust you.
How can I verify a large list of bol.com.br email addresses?
Our bulk email verifier accepts CSV or TXT uploads with thousands or millions of bol.com.br addresses (or any mix of domains). Every address goes through 30+ checks including SMTP existence, bol.com.br catch-all detection, role-account detection, and disposable-domain matching. Results typically come back within minutes and previously-failed addresses on your blacklist are reprocessed for free. For continuous high-volume needs, see our unlimited email verification API.
Is it safe to accept signups from bol.com.br email addresses?
Yes, with normal hygiene. bol.com.br is a legitimate email service and signups from @bol.com.br behave like any other real user. Pipe each address through a real-time email verifier API at the moment of signup to catch typos and dead mailboxes, but there is no need to block bol.com.br by default.
What email format does bol.com.br use for usernames?
Most bol.com.br mailboxes follow common patterns like first.last@bol.com.br, firstinitiallast@bol.com.br, or first@bol.com.br, but the actual local-part rules depend on UOL Group. The only reliable way to confirm whether a specific @bol.com.br address exists is to run it through a free email verification tool. Guessing patterns will produce a high bounce rate and damage your sender reputation.
How is the bol.com.br risk score calculated?
The 0-to-100 risk score for bol.com.br combines disposable-domain classification, mail-server reachability, MX record presence and depth, SPF / DKIM / DMARC enforcement, DMARC policy strength, SMTP banner response, and domain age. Lower scores mean safer to send to. Disposable domains are pinned at the high end of the scale. The bol.com.br score is recomputed on every audit so it always reflects the live state of the domain.
Is bol.com.br a valid email domain?
Yes, bol.com.br is a valid free email domain operated by UOL Group. It provides permanent email accounts to users.
Is bol.com.br a disposable or temporary email provider?
No, bol.com.br is not a disposable or temporary email provider. It offers permanent email accounts with standard email features.
What mail server does bol.com.br use?
bol.com.br uses mail servers operated by UOL Group. Check the MX records section above for specific server details.
Can I send marketing emails to bol.com.br addresses?
Yes, with proper opt-in consent. Follow email best practices and ensure SPF, DKIM, and DMARC authentication is configured for your sending domain.
How do I verify an email address at bol.com.br?
Use BulkEmailChecker to verify bol.com.br addresses via SMTP checks. Verification behavior varies by provider. Our tool handles provider-specific rate limiting automatically.