Change record status: 
Introduced in branch: 
3.x
Introduced in version: 
3.0.0-alpha1
Description: 

The \Drupal\multiple_email\Access\MultipleEmailAccess has been deprecated; it will be removed from the 4.0.0 release.

Routes which used that class should instead use _entity_access with one of the operations recognized by the Drupal\multiple_email\EmailAccessControlHandler, the access control handler for the multiple_email entity.

Impacts: 
Module developers
Site templates, recipes and distribution developers