In order to send bulk messages to relationships based on their assigned tags, you can follow these steps:
- Access the gear icon located at the top right corner of the interface.
- Select the "Tags" option from the menu.
- Choose the desired tag from the list by clicking on it.
- Tap on the three-dot icon situated at the top right corner.
- From the available options, select "Email to all (bcc)."
By following these steps, you will be able to efficiently send bulk messages to recipients associated with a specific tag.