Select an organization-wide email address to use as the From address when Salesforce sends email for users with unverified domains. With this option, outgoing emails use a From address that reflects your company's brand.
Where: This change applies to Lightning Experience and Salesforce Classic in all editions except Salesforce Free Suite and Database.com.
When: Salesforce plans to make this feature available June 23–July 3, 2026.
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 for Substitute Email Address, select an organization-wide email address. Only verified addresses that have Allow All Profiles enabled and use a verified email domain appear in this list.
If no substitute address is selected, Salesforce sends email for those users from
email@UniqueId.sfcustomeremail.com, where
UniqueId is your Experience Cloud site ID or org ID.