Setting up DomainKeys Identified Mail (DKIM) involves several steps and depends on the service provider you use

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By clicking the button, you agree to the terms and conditions . You will also need to confirm your email address.

How they work together
DKIM, SPF, and DMARC are not individual solutions, but rather a complementary team. Imagine a high-security apartment building.

SPF (cadru de politică pentru expeditori) acts as the exit mobile database building's security guard. It checks the ID (domain name) of anyone trying to log in (send an email) and allows access only to authorized senders (authorized email servers).
DKIM (DomainKeys Identified Mail) works like a digital signature for your emails. It adds an unbreakable seal to your message, proving that it came from you and was not altered in transit.
DMARC (Domain-Based Message Authentication, Reporting, and Conformance) is the building block. It oversees the entire process, receiving reports from SPF and DKIM to identify any unauthorized access attempts (forged emails). DMARC then informs email providers about what to do with suspicious emails, ensuring they don’t reach inboxes.
Implementing all three protocols creates a strong defense against email spoofing and phishing attempts.

It filters illegitimate emails even before they reach your recipients, significantly improving both email security and deliverability.

Your authentic emails are more likely to arrive safely in users' inboxes, boosting trust and better communication.

But remember, all of this together is not a guarantee that your email will reach your INBOX.

Implementation stages
How to configure DKIM.