You must set up triggered or automated campaigns in your account if you want to use the program builder. This allows you to develop detailed automated programs.
Learn more in An introduction to the program builder.

Programs

Triggered emails - this lists all of your email campaigns that have been set up for use in automation

Triggered SMS - this lists all of your SMS campaigns that have been set up for use in automation

Program builder
Create detailed automations using the program builder.

List triggers
Every time someone joins or unsubscribes from one of your lists, you can set a particular campaign to be sent to them automatically.

Date triggers
You can create one trigger or a series of triggers based on date fields within your lists. For example, if you hold the date of birth for your contacts, you could send a campaign automatically wishing them a happy birthday using the program builder.

Default auto responder
You can trigger a default response if a recipient replies to any one of your email or SMS campaigns, perhaps letting them know that they've replied to an unmonitored email address or a number and providing alternative contact details.

Specific auto responders for specific campaigns or SMS trigger words
Trigger a specific auto-response for a particular email campaign or to a particular word or phrase in an inbound SMS message.

Verified double opt-in confirmation
You can set up a triggered email to confirm your contacts really do want to receive your email.

Resubscribe confirmation
When a contact chooses to resubscribe after having previously unsubscribed, a triggered email is sent to them to ask them to confirm their resubscription.

Manage folders