Why does Gmail show 'via' even when DMARC passes?
Summary
What email marketers say8Marketer opinions
Email marketer from Super User mentions that Gmail displays 'via' when the sending server's domain doesn't match the 'From' address domain, acting as a visual cue for users regarding the email's origin, even when passing authentication checks.
Email marketer from Reddit says that the 'via' tag shows up because the sending server's domain doesn't match the domain in the 'From' address, even if authentication is successful.
Email marketer from Email Geeks shares that the message is sent via Mailgun, and there's a Sender header using the same subdomain as the DKIM d= but not the friendly From, potentially causing the 'via' display in Gmail.
Email marketer from Stack Overflow explains that Gmail shows 'via' when an email isn't sent directly from the domain listed in the 'From' address. It highlights the use of a third-party sending service even if authentication passes.
Email marketer from Email on Acid Blog explains that the 'via' tag means the email was sent using a third-party service, and while DMARC might pass, Gmail still shows the 'via' to indicate the email's origin.
Email marketer from Litmus explains that while passing DMARC is important, Gmail may show 'via' to alert users when emails are sent through third-party services, highlighting the need for proper SPF and DKIM alignment.
Email marketer from Neil Patel's Blog explains that Gmail shows 'via' when the domain in the 'From' address doesn't exactly match the domain that sent the email, even if DMARC passes. This is to highlight cases where a third-party service is used.
Email marketer from Mailtrap Blog shares that the 'via' tag in Gmail indicates that the email was sent through a server that is different from the sender's domain, even if email authentication protocols like SPF, DKIM, and DMARC are in place and passing.
What the experts say2Expert opinions
Expert from Email Geeks suspects that the 'via' display in Gmail might be due to a Sender header, rather than authentication issues. He suggests testing this hypothesis.
Expert from Word to the Wise explains that Gmail shows 'via' when the DKIM signature domain doesn't match the From: domain, even if DMARC passes in relaxed mode. The 'via' is a visual cue to the user about the email's actual origin.
What the documentation says5Technical articles
Documentation from AuthSMTP mentions that Gmail displays 'via' when the sending server's domain doesn't match the 'From' address domain, acting as a visual cue for users regarding the email's source.
Documentation from DMARC.org explains that even if DMARC passes, Gmail may display 'via' if SPF or DKIM alignment isn't strict. Relaxed alignment allows for subdomains, but Gmail may still show 'via' in these cases.
Documentation from RFC Editor clarifies that the presence of a Sender header, different from the From header, can cause email clients like Gmail to display 'via' even with passing DMARC, as the email appears to originate from a different source than the purported sender.
Documentation from Microsoft mentions that the presence of a Sender header that differs from the From header can cause email clients like Gmail to display 'via' even with passing DMARC. This indicates to the user that the email is not directly sent from the From email.
Documentation from Google Workspace Admin Help responds that Gmail displays 'via' to inform recipients that the email was sent by a third-party on behalf of the domain in the 'From' address. This happens when the sending domain isn't the same as the 'From' domain.
Related resources0Resources
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