A Sender defines the "from" identity your subscribers see when they receive a message or auto responder. Each sender is tied to a publication and a verified domain.

Create a Sender

You can only create senders using domains that are configured and verified. Reply-only senders only require the domain to be configured.

Navigate to Messaging > Senders.
Click Create.
Fill in the required fields:

Field	Description
Publication	The publication this sender belongs to. Cannot be changed after creation.
Name	The display name subscribers see (e.g., "OptiPub Team").
Local Part	The part before the `@` in the email address (e.g., `hello`).
Domain	Select a configured and verified domain. Combined with the local part to form the full "from" address.

Optionally, configure these toggles:
- Default — Make this the default sender for the publication. Only one sender can be default per publication.
- Reply Only — Use this sender only as a reply-to address. Reply-only senders do not require a verified domain.

The default sender is automatically selected when creating a message. Only one sender can be default per publication at a time.

Edit a Sender

To edit an existing sender, click the three-dot menu on the sender row and select Edit. You can update the name, local part, domain, reply-only setting, and default status.

To quickly set a sender as the default, click the toggle switch icon in the Actions column. This will prompt you to confirm the change.

Changing the default sender will overwrite the existing default for that publication.

Delete a Sender

Senders cannot be deleted. If a sender is no longer needed for outgoing messages, set it to Reply Only instead.