iol.pt - Email Domain Verification & Deliverability Report

Active Free Email Provider
Organization: Portugal Telecom
Mail Server: iol.pt
Verified 6 days ago

Real-time verification data for Portugal Telecom (iol.pt). A Free Email Provider .

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MX Records for iol.pt

PriorityMail ServerIP Address
5 smtp-box-01.iol.pt 193.126.240.185
SMTP Status: Responding
SMTP Banner:
220 smtp-box-01.iol.pt ESMTP Postfix

iol.pt uses iol.pt mail servers, which means emails are processed through iol.pt infrastructure with their built-in spam filtering and security controls.

Email Authentication for iol.pt

SPF Record Pass

v=spf1 ip4:193.126.240.185 ip4:193.126.240.150 ip4:62.48.189.169 mx include:_spf.kmitd.com include:mail.zendesk.com -all
Authorized Senders:
_spf.kmitd.com mail.zendesk.com

SPF (Sender Policy Framework) specifies which mail servers are authorized to send email on behalf of iol.pt.

DMARC Record None

v=DMARC1; p=none; rua=mailto:dmarc@iol.pt; ruf=mailto:dmarcf@iol.pt

DMARC (Domain-based Message Authentication) tells receiving servers what to do with emails that fail authentication checks.

DKIM Found

DKIM signatures were detected for iol.pt, confirming that this domain cryptographically signs outgoing emails.

Authentication Summary: iol.pt has full email authentication configured with SPF, DMARC, and DKIM. This provides strong protection against email spoofing and phishing. Emails sent from this domain are well-authenticated and likely to have high deliverability.

WHOIS & Domain Information

Registration Details

Domain
iol.pt
TLD
.pt
Domain Age
26 years

Registrar

Registrant Contact

Name
MEDIA CAPITAL DIGITAL, S.A.
Location
PORTUGAL

Name Servers

  • jillian.ns.cloudflare.com
  • sri.ns.cloudflare.com

About iol.pt Email Verification

iol.pt is a Portuguese email and web portal historically associated with Portugal Telecom (now Altice Portugal). Based in Lisbon, the platform provides free email alongside news and entertainment for Portuguese internet users.

iol.pt supports SPF authentication for outbound email. The service complies with EU GDPR and Portuguese data protection regulations.

The iol.pt mail servers perform recipient verification and reject invalid addresses. The domain does not operate as catch-all. Rate limiting applies from unfamiliar senders.

When emailing iol.pt users, authenticate with SPF and DKIM. Comply with Portuguese and EU anti-spam regulations. Include proper unsubscribe options.

How to Verify iol.pt Email Addresses

Need to check if an email address at iol.pt actually exists before you send to it? BulkEmailChecker performs deep SMTP-level validation, connecting directly to iol.pt's mail servers to confirm the mailbox is real, active, and able to receive your message. No test email is ever sent, so your sender reputation stays protected.

Verify a Single iol.pt Email
Use BulkEmailChecker's free email verification tool to instantly validate any iol.pt address. You'll get a complete deliverability report including mailbox existence, catch-all detection, disposable domain flagging, and risk scoring, all in under 3 seconds.

Verify a List of iol.pt Emails in Bulk
Have a mailing list full of iol.pt addresses? Upload your CSV or TXT file to BulkEmailChecker and verify thousands of email addresses in minutes. Our bulk verification engine runs 30+ checks per address including syntax validation, DNS resolution, SMTP handshake, and spam trap detection. Clean your list before every campaign to keep bounce rates below 2% and protect your sender score. See bulk pricing.

Verify iol.pt Emails via API in Real-Time
Building a signup form, CRM integration, or lead capture system? BulkEmailChecker's real-time verification API validates iol.pt email addresses at the point of entry, blocking invalid, disposable, and risky addresses before they enter your database. Integrate with a single API call and prevent bad data at the source.

Frequently Asked Questions

Yes, iol.pt is a valid free email domain operated by Portugal Telecom. It provides permanent email accounts to users.
No, iol.pt is not a disposable or temporary email provider. It offers permanent email accounts with standard email features.
iol.pt uses mail servers operated by Portugal Telecom. Check the MX records section above for specific server details.
Yes, with proper opt-in consent. Follow email best practices and ensure SPF, DKIM, and DMARC authentication is configured for your sending domain.
Use BulkEmailChecker to verify iol.pt addresses via SMTP checks. Verification behavior varies by provider. Our tool handles provider-specific rate limiting automatically.
The fastest and most accurate way to verify a iol.pt email address is to use BulkEmailChecker's free email verification tool. Simply enter the full email address and our system performs SMTP-level validation by connecting directly to iol.pt's mail servers. You'll get instant results showing whether the mailbox exists, is deliverable, and is safe to send to, all without sending a single email.
Yes. BulkEmailChecker uses SMTP verification to check if a iol.pt mailbox exists without ever delivering an email. Our system connects to the domain's mail server, performs an SMTP handshake, and queries the mail server to confirm whether the recipient address is valid. This process is completely invisible to the email recipient and does not affect your sender reputation.
Sending to invalid email addresses causes hard bounces, which directly damage your sender reputation. Internet Service Providers (ISPs) and email providers track your bounce rate, and if it exceeds 2%, your emails may start landing in spam folders or get blocked entirely. Verifying iol.pt addresses with BulkEmailChecker before sending prevents bounces and keeps your deliverability high.
BulkEmailChecker's bulk verification service lets you upload a CSV or TXT file containing thousands of iol.pt email addresses and verify them all at once. Each address goes through 30+ verification checks including syntax validation, DNS/MX lookup, SMTP verification, disposable domain detection, and spam trap identification. Results are typically ready within minutes and can be downloaded as a clean, verified list.
Email verification is the process of confirming that an email address is real, properly formatted, and capable of receiving messages. It matters because sending to invalid addresses causes bounces, damages your sender reputation, wastes marketing budget, and can get your sending IP blacklisted. BulkEmailChecker verifies addresses at the SMTP level, the most accurate method available, ensuring your emails reach real people.
MX (Mail Exchange) records are DNS entries that specify which mail servers are responsible for receiving email for a domain. When you send an email, your mail server looks up the recipient domain's MX records to find where to deliver the message. If a domain has no MX records, it cannot receive email. BulkEmailChecker checks MX records as part of every verification to confirm the domain is configured for email delivery.
A catch-all (or accept-all) domain is configured to accept email sent to any address at that domain, regardless of whether the specific mailbox exists. This makes it harder to verify individual addresses because the server always responds positively. BulkEmailChecker detects catch-all configurations and flags them in verification results so you can make informed decisions about sending to those addresses.
Yes. BulkEmailChecker offers a real-time email verification API that you can integrate into signup forms, CRM systems, lead capture tools, and any application that collects email addresses. The API validates addresses at the point of entry, blocking invalid, disposable, and risky emails before they enter your database. Integration takes just a single API call with response times under 3 seconds.

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