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The fortress that protects your email in the digital world

Today, email remains one of the most effective communication channels, especially in the area of digital marketing.

However, the number of cyber attacks, such as phishing and spoofing is increasing, which will pose serious threats to the integrity and effectiveness of email.

It is in this context that DMARC (Domain-based Message Authentication, Reporting, and Conformance) becomes crucial.

In this glossary entry, we’ll delve into the world of DMARC to understand what it is, how it works and how it relates to email security.

What is DMARC?

DMARC is an email security protocol that builds on two previous technologies: SPF (Sender Policy Framework) and DKIM (DomainKeys Identified Mail).

The aim of DMARC is to offer domain owners a protection mechanism for their domain names against misuse, such as phishing attempts and other types of fraud.

How does this system work?

If everything matches, the message will pass the checks and will be delivered to the recipient’s inbox.

If everything matches, the message will pass the checks and will be delivered to the recipient’s inbox.

If something goes wrong, the domain owner can specify how the email should be handled:

  • The filter could reject it
  • Quarantine it
  • Or allow it to be delivered, but mark it for review.

Its relevance in the context of email

The effectiveness of email as a commercial or marketing communication tool will be compromised if the messages sent end up in the spam folder or, worse, never reach their destination.

DMARC acts as a protective shield that guarantees the successful delivery of your emails, authenticating them and providing them with an additional layer of security.

Implementation steps

Setting up DMARC may seem complicated, but the investment in time and effort is worth it.

The basic steps are as follows:

  • Make sure that SPF and DKIM are already implemented and working correctly.
  • Create a DMARC record in TXT format in your DNS.
  • Set up policies to deal with emails that don’t go through the verification process.
  • Test the configuration before implementing it across the entire domain.

If you’re using a reliable email service like Mailrelay, implementing DMARC will become a much easier process thanks to the excellent technical support they offer.

Why choose Mailrelay?

Mailrelay not only offers the largest free email marketing account on the market, but also provides unparalleled security for your email campaigns.

Implementing DMARC is easier thanks to the first-class technical support that Mailrelay offers even for free accounts.

This way, you can be sure that your emails will reach your subscribers without any problems.


In summary, DMARC is a key piece in the email security puzzle.

Not only does it help protect the sender’s reputation, but it also improves the delivery rate of your emails, which is especially important in email marketing campaigns.

With the help of specialized platforms like Mailrelay, implementing DMARC becomes a much less daunting task, allowing you to focus on what really matters: connecting with your audience via email using a secure and effective channel.