Correct technical settings for mailing

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From an emailing strategy perspective, deliverability is affected by what content you send, how often you send it, and whether you work well with your contact database .

Let's examine the individual options for increasing email deliverability in more detail.

If you use one of the emailing tools , your messages should look like they came straight from your inbox. This is done using DNS records . These are technical settings that help identify the sender.

SPF (Sender Policy Framework) allows administrators to specify which computers can send mail from a given domain.
DKIM (DomainKeys Identified Mail) allows you to determine whether an email actually comes from the source listed as the sender's address. DKIM is crucial for deliverability.
DMARC (Domain-based Message Authentication, Reporting and Conformance) is an line database email message validation system that detects forged emails and prevents their delivery.
You cannot change DNS records for free email addresses such as Gmail, Yahoo, Seznam, etc. You can only change the settings for your own email address on your own domain . Most emailing solutions will tell you how to verify DNS records . You can then check their status directly in the tool.

Example of verifying DNS records in Ecomail
Sample of verified DNS records from Ecomail tool

Sample of verified DNS records from the SmartEmailing tool
Sample of verified DNS records from the SmartEmailing tool

You can also check DNS records externally , e.g. on the dmarcian website :

Sample from dmarcian tool
DNS records as a prerequisite for Gmail and Yahoo
Email authentication is now key to getting your email into Gmail and Yahoo Mail inboxes . The two tech giants have tightened standards for bulk senders , requiring them to use SPF and DKIM. This update has earned them the nickname Yahoogle.

BIMI will "sanctify" it for you
Experts expect even greater pressure to tighten email security and the introduction of other protocols in 2025 , such as BIMI (Brand Indicators for Message Identification), a brand indicator that builds on DMARC and allows you to display a verified logo in the recipient's inbox. It is a DNS record that is stored on your servers and signals to users that the author of the email is really you .