What Is the Blue Check Mark in Gmail & Outlook?

If you’ve recently received an email in Gmail or Office 365 / Outlook and noticed a small blue check mark next to the sender’s name, you’re not alone. Many business owners and marketers are starting to see this new trust indicator appear in their inboxes – and it’s quickly becoming an important part of email credibility.

At Sympley, we’re often asked what the blue check mark means, why it appears, and how businesses can get it. In this article, we’ll break it down in simple terms so you understand what’s happening behind the scenes and why it matters for your brand.

What Are Blue Checks Against Emails?

The blue check mark in Gmail (or what Office 365 calls the Verified Brand/Sender Icon) is a visual trust signal. It shows that the sending domain has been properly authenticated and verified.

In plain English, it means the email you’re receiving is genuinely from the brand it claims to be from – not a spoofed or fraudulent message.

This verification is part of Google’s and Microsoft’s broader push to improve email security and reduce phishing attacks. When configured correctly, it helps recipients feel confident that your emails are legitimate and safe to open.

How the Blue Check Mark Works

Behind the scenes, the blue check mark relies on a combination of email authentication standards and brand verification processes.

Typically, this includes:

  • Properly configured SPF, DKIM and DMARC records
  • Domain authentication and alignment
  • Brand verification with Google (BIMI requirements)
  • Consistent sender reputation

When these elements are correctly set up, Gmail may display the blue verification tick next to your brand name or logo in the inbox.

It’s important to note that simply sending emails from your domain is not enough. Your domain must be fully authenticated and meet Google’s sender requirements before the blue check mark will appear.

Why the Blue Check Mark Matters for Your Business

This small visual indicator can have a surprisingly big impact on your email performance and brand trust.

Improved trust and credibility
Recipients are more likely to trust and open emails that show verified status.

Better brand protection
Verification helps prevent spoofing and impersonation of your domain.

Stronger email engagement
Trust signals can contribute to improved open rates over time.

Future-proofing your email setup
Google and Microsoft are continuing to tighten sender requirements, so proper authentication is becoming essential – not optional.

For businesses running regular campaigns, newsletters, or transactional emails, this is especially important.

How to Get the Blue Check Mark

The process to obtain the blue check mark is technical but manageable when handled correctly. At a high level, it involves:

  • Authenticating your sending domain
  • Configuring SPF, DKIM and DMARC properly
  • Meeting Google’s BIMI requirements
  • Maintaining a strong sender reputation
  • Verifying your brand assets

Because multiple systems must align perfectly, many businesses find it helpful to have an experienced team handle the setup.

Common Mistakes to Avoid

We often see businesses attempt to configure email authentication themselves and run into issues such as:

  • Incorrect DMARC policies
  • Misaligned DKIM signatures
  • DNS propagation problems
  • Missing BIMI requirements
  • Poor sender reputation

Even small misconfigurations can prevent the blue check mark from appearing – or worse, harm your email deliverability.

This is why ongoing technical oversight matters.

Need Help Getting Verified?

If you want the blue check mark showing next to your emails but aren’t sure where to start, the team at Sympley can help.

Get in touch with Sympley today and let our team handle the technical side so you can focus on growing your business with confidence.

Frequently Asked Questions

The blue check mark is a verification indicator that helps recipients identify emails sent from authenticated and verified organisations. It shows that the sender has implemented the required email authentication standards and, where supported, completed brand verification to help reduce spoofing and phishing.

To qualify, businesses typically need correctly configured SPF, DKIM and DMARC records, along with BIMI (Brand Indicators for Message Identification). For Gmail's blue verification check mark, Google also requires brand verification using a Verified Mark Certificate (VMC) or, in some cases, a Common Mark Certificate (CMC).

The blue check mark itself doesn't directly improve deliverability. However, the authentication standards required to obtain it—such as SPF, DKIM and DMARC—can improve your sender reputation and reduce the likelihood of emails being marked as spam. The verification badge also increases trust, which may improve open rates.

No. Support varies between email providers and applications. Gmail displays the blue verification check mark for eligible senders, while support differs across Outlook and other email platforms. Whether recipients see the badge depends on both the sender's configuration and the email client being used.

Not exactly. BIMI allows verified brand logos to appear alongside emails, while the blue check mark is an additional verification indicator shown by supported email providers once the required authentication and brand verification requirements have been met. BIMI is one of the key components required to obtain the verification badge in Gmail.

Sympley can review your existing email configuration, correctly configure SPF, DKIM, DMARC and BIMI, assist with brand verification requirements, and ensure your domain meets the technical requirements needed for verified sender status. We'll also test your email authentication to help maximise deliverability and strengthen your brand's credibility.

Picture of Matt Simpson

Matt Simpson

Founder & Lead Project Manager

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