Email Authentication & Domain Setup Overview

Email Authentication & Domain Setup Overview

To ensure your email campaigns reach inboxes effectively, it's crucial to set up your domain properly with key authentication protocols and perform email warmups. Here's why each step is important:

DKIM (DomainKeys Identified Mail)

DKIM verifies that your emails are genuinely from your domain, preventing email spoofing. Proper DKIM setup enhances your domain's reputation, significantly increasing email deliverability.

SPF (Sender Policy Framework)

SPF helps confirm that your emails originate from approved servers. A correctly configured SPF record reduces the risk of emails being marked as spam or phishing.

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

DMARC protects your domain from unauthorized use and provides insights into your email authentication results. DMARC alignment improves trust, reduces spam flags, and enhances overall campaign performance.

DNS Configuration

Proper DNS records ensure emails are correctly routed and recognized by receiving servers. Incorrect DNS configurations can severely limit your deliverability.

Email Warmup

Warming your email domain gradually establishes your sending reputation. Skipping warmup can lead to high bounce rates, spam classification, and poor email deliverability.

Setup Guides

• DKIM: https://learn.microsoft.com/en-us/defender-office-365/email-authentication-dkim-configure

• SPF: https://learn.microsoft.com/en-us/defender-office-365/email-authentication-spf-configure

• DMARC: https://learn.microsoft.com/en-us/defender-office-365/email-authentication-dmarc-configure

• DNS Configuration: https://learn.microsoft.com/en-us/microsoft-365/admin/get-help-with-domains/create-dns-records-at-any-dns-hosting-provider?view=o365-worldwide

• Email Warmup: https://app.revscale.ai

Following these guidelines will maximize the success and reliability of your email campaigns.

Updated on: 07/10/2025