Set Up Enhanced Email Relays
Where: This change applies to Lightning Experience and Salesforce Classic in Professional, Enterprise, Performance, Unlimited, and Developer editions.
Who: These Setup changes are visible only to customers who didn't manually activate the enhanced email relay pages before Spring ’20.
When: The Email Relay Activation page is visible for several days after the release as Salesforce migrates your org to the enhanced email relay Setup pages. During this window, relay modification is disabled to preserve data integrity. If you can’t wait to update your relay settings, you can manually enable the new Email Relays and Email Domain Filter Setup pages.
How: To manually enable the enhanced pages, from Setup, enter Email Relay Activation in the Quick Find Box, and select Email Relay Activation. Select Enable Enhanced Email Relay.