People

• Person: Is an individual in your Mobile Database.
• Participant: Is a Person who has one or more mobile interactions, such as sending a text message, with a company but has not yet subscribed to a Subscription List.
• Pending Subscriber: Is a Participant that has requested to opt-in to a Subscription List, has been sent a prompt to join a Subscription List that has not expired, but has not yet confirmed their opt-in.
  
• Subscriber: Is a Participant who is subscribed to one or more Subscription Lists.

Lists

• Subscription List: Is a collection of Subscribers that have all subscribed to the same type of certain content.
• Recipient List: Is an externally defined set of People who match the target for outbound content delivery.

Data

• Message: Is an individual communication sent to or from a Person.
• Broadcast: Are messages sent to a set of Subscribers.
• Standard Field: Are messages sent to a set of Subscribers.
• Custom Field: Are messages sent to a set of Subscribers.
• Tag: Are messages sent to a set of Subscribers.