Yahoo recently made a change to their DMARC (Domain-based Message Authentication, Reporting & Conformance) email policy that could impact nonprofits who send mass emails.

Yahoo MailThe change will bounce all emails sent from a email address to another DMARC participant (,,, etc.) if the email is not sent through Yahoo servers (i.e. through donor database software or another email provider).

You can read the full announcement and explanation from Yahoo here.

We recommend that emails sent on behalf of your organization to multiple recipients be sent from an email address that contains your organization’s domain. For example:, rather than

If you feel as though this change is affecting your use of Bloomerang, please contact


Jason Oliver

Jason Oliver

Director of Customer Support at Bloomerang
Jason Oliver is the Director of Customer Support at Bloomerang. Ask him about his vinyl collection sometime.
Jason Oliver

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