The amount of storage space you have available depends on whether or not you are a MightyText Pro subscriber.

If you are NOT a pro user, you will have 5GB of storage space available.

If you ARE a pro user, you will have 100GB of storage space available.

Note:  You can always see how much storage space you have available by loading the Photos/Videos tab in the MightyText web app or by loading the Usage section of the MightyText web app Settings tab.