Removing a Gmail alias from Block Sender works just like unlinking a primary Gmail account.

  1. In your Gmail web client, click the Block Sender  icon in your browser and choose Dashboard. You can also this link to access the dashboard.
  1. Scroll down to Your Accounts section to see the emails linked to your account.
  1. Locate the alias you want to delete, select its Options and then choose Delete. Remember aliases are indicated with “(alias)” next to them under Email Provider.
  1. Select Yes, remove it in the confirmation dialog to remove your alias account