Enable users whose email domains you can't verify—such as users with public email
addresses, consultants, and site users—to send email from Salesforce. With your substitute email
address, the user's display name and reply-to address remain unchanged, but the From address uses
email@UniqueId.sfcustomeremail.com, where
UniqueId is your org ID or Experience Cloud site ID. This option also applies
to system-generated emails and emails sent via shared email accounts with an unverified
domain.
Where: This change applies to Lightning Experience and Salesforce Classic in all editions except Salesforce Free Suite and Database.com. This change has no impact on trial orgs.
When: Salesforce plans to make this feature available in late April 2026.
Why: Consultants, Experience Cloud site users, and Salesforce Site users often have email domains that you can't add to your verified list. And you can’t verify the domains for public email addresses, such as yahoo.com. When you enable this feature, those users can send email from Salesforce while preserving their display names.
How: From Setup, in the Quick Find box, enter Deliverability, and then select Deliverability. Select Use a substitute email address for unverified domains, and then save your changes.
