Sender Setup is a step in the 'Create a Program' process. In the Sender Setup step, you must provide details of which person in your team the communication you setup will be coming from. There are multiple steps to Setup your Sender for a program; nominating an email inbox to use for sending emails is one of them.
To setup a sender you must first Create a Program.
One of the steps will be to Setup the Sender.
To send email to your contacts, you need to connect an email account/mailbox. The connected email account/mailbox will be used to send emails to contacts associated with the outreach programs you create.
Each Sender (core team user associated with your teams Business Account) can have multiple mailbox accounts associated with their Sender Profile.
When creating a new outreach program, you can either select an existing mailbox account for the Sender (or) add/connect a new mailbox account.
NOTE: If you are setting up your program on behalf of another Sender in your team, you can select one of your colleagues existing connected mailbox accounts for use on the outreach program you are configuring for them. If they do not have an existing mailbox account to choose from for the program, or you are not sure which mailbox account to use, then you can leave this decision for them to complete before they launch the program - you do this via the 'Sender will provide mailbox before launch' checkbox provided in the Email setup step of the Create a Program workflow.