1. A method for filtering image-based messages, the method comprising: receiving an image-based message from a sender; and executing instructions store d in memory, wherein execution of the instructions by a processor: identifies one or more text lines within an image of the image-based message, determines whether the one or more text lines fit a predetermined numeric pattern of characters and spaces, assigns a score to the message based on whether the text lines fit the numeric pattern, and filters the received image-based message based on the assigned score.