The text messaging format that MobileCause uses is SMS (Short Message Service). The SMS format allows for a maximum of 160 characters to be sent to a mobile number that can accept text messages. SMS is a nearly universal format that will allow you to reach the greatest number of your supporters.
There are other texting standards that are not as widespread as SMS. They may allow you to send more text, pictures, and videos embedded in the text, etc. but are not usable on every phone. So MobileCause uses SMS to reach the widest range of phones across most, if not all, phone carriers.
Even though SMS is optimized for sharing text, you can still share your donation forms, pictures, video, and other content over SMS through MobileCause by adding a URL / weblink to your text messages. You can add URLs/ Web links to texts that you send out to your supporters and the texts that your supporters receive when they text into a subscription keyword.
To share images, videos, articles, or webpages in your text message, you can add the URL where the content is hosted. Many people choose to upload their photos and videos to social media and, then, share the URL for the social media post in their text messages. To reduce the character count of the URL that you are sharing, to make sure you are under the SMS character limit, you can use a third-party URL shortening service.