How does Salesforce's "Verify Your Email Domain Ownership" changes affect Vicasso's Apps?

In Spring '26 (after Patch 11), Salesforce's email domains need to be verified. These are any addresses from which emails are going to be sent, including Org-Wide Email Addresses and Email Service Addresses.

Apr 20, 2026
Knowledge

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https://kb.vicasso.com/?kb=000005515

Details

To strengthen email security, Salesforce is making email domain verification mandatory. Organizations must verify that they own the domains used to send emails from Salesforce. If a domain is not verified, user-authored emails (including those sent via Email to Case Premium) will fail to deliver or be substituted with a generic Salesforce address, potentially disrupting customer communications.

More information can be found here and here.

Email to Case Premium:

Any addresses that will be sending emails need to be verified, and the following scenarios apply:

If the "Hybrid" option is enabled for "Public Comments Send From (default)" and/or "Private Comments Send From (optional)", the Org-Wide Addresses and all of the end-users' email addresses (that use the Timeline) need to be verified.
If, along with the "Hybrid" option above, you also use Email Distribution, the Org-Wide Addresses and the E2CP Context User's email address also need to be verified.
If the "Hybrid" option is NOT enabled, then only the Org-Wide Addresses need to be verified.

When email addresses are not verified, and DKIM is not configured in the Org, users may notice that emails are not processed correctly, and may receive error emails with the following message:

The apex class E2CP.ProcessMessage failed due to: System.EmailException: SendEmail failed. First exception on row 0; first error: INSUFFICIENT_ACCESS_OR_READONLY, We can't send your email because your email address domain isn't verified.: []

Simple Survey:

Any addresses that will be sending survey emails to respondents need to be verified.

When email addresses are not verified, and DKIM is not configured in the Org, users may receive Flow Error emails similar to the following. It may also contain the subject of "Sandbox: An error occurred with your "Simple Survey Send Survey Email" flow."

A debug log via subscriber access may be needed to confirm these issues. For more information or questions, please open a support case with Vicasso by emailing support@vicasso.com.