Multimedia Messaging Services (MMS) can be an effective tool for grabbing your customer’s attention. It’s essentially a visual version of an SMS. The price of an MMS is much higher than an SMS, and it’s largely determined by the size of your image or animated GIF.
Guide: How to design the perfect MMS
7 Tips to optimise your GIFs for your next MMS marketing campaign
For images and GIFs, here are the dimensions (in pixels) you can work with: