Email Deliverability in 2024: DKIM, SPF

As we step into a new year, the digital landscape for email senders is about to witness a significant shift. On February 1, Google and Yahoo will roll out sender policy changes that mandate DKIM and DMARC authentication for all emails. In this blog post, we’ll explore the implications of these changes and guide you through the process of setting up DKIM and DMARC authentication to ensure seamless email delivery.

Why DKIM and DMARC Authentication Matter:

Before delving into the authentication methods, it’s crucial to ensure your sending domain is valid. Ensure it is older than 30 days, points to a valid website, and has an MX record specifying the mail server responsible for accepting emails. Now, let’s explore the three established methods – SPF, DKIM, and DMARC – and why Gmail and Yahoo are making them a requirement starting February 2024.

Benefits of Email Authentication:

Enhanced Brand Trust: Setting up DKIM authentication removes the “via…” header from Gmail, presenting your emails with a clean and professional appearance. This not only reinforces your brand identity but also instills trust in recipients.

Establishing Sender Credibility: DKIM authentication plays a pivotal role in building your reputation as a credible email sender on your domain. This authentication method ensures that your emails are recognized as legitimate, fostering trust and reliability with your audience.

Strengthened Security Measures: The implementation of authentication standards, such as DMARC, provides an additional layer of security for your domain. By safeguarding against potential fraudulent activities, you ensure a secure and trustworthy email environment for both your brand and recipients.

Elimination of Spoofing Risks: Email authentication, especially DMARC, helps protect your domain from spoofing and phishing attempts. By adhering to these standards, you minimize the risk of unauthorized entities attempting to use your domain for malicious purposes.

Optimized Email Deliverability: While email authentication doesn’t address recipient preferences, it significantly impacts deliverability. Senders following best practices, combined with proper authentication, are more likely to achieve higher deliverability rates. This results in your emails reaching the intended audience efficiently.

Domain Reputation Management: Authentication, particularly DKIM, contributes to building and maintaining a positive domain reputation. Similar to turning in homework with your name, authenticated emails ensure that your domain receives due credit for sending legitimate and valuable content.

The Role of Authentication in Deliverability: While authentication doesn’t address recipient preferences, it plays a crucial role in determining the legitimacy of the sender. Senders adhering to best practices, such as sending personalized emails to opt-in lists and maintaining list hygiene, will experience higher deliverability with email authentication. On the contrary, those neglecting best practices may face lower deliverability and risk being perceived as senders of unwanted emails.

Setting Up Authentication Methods:

SPF (Sender Policy Framework):

DKIM (Domain Keys Identified Mail):

DMARC (Domain-based Message Authentication, Reporting & Conformance):

The Golden Trio of Email Authentication: Combining SPF, DKIM, and DMARC forms the golden trio of email authentication. While SPF and DKIM are widely known, DMARC is increasingly becoming a valuable addition for enhanced domain protection against spoofing and phishing.


As we adapt to the evolving landscape of email authentication, implementing DKIM and DMARC is not just a compliance requirement but a strategic move to safeguard your brand and ensure reliable email delivery. Stay ahead of the curve by securing your email infrastructure and building a reputation as a trusted sender in the eyes of mailbox providers and recipients alike.