During your free trial or within any EZ Texting plan, you can send what’s called an MMS for a set number of credits depending on your plan. MMS (or image messaging) provides not only the option to use up to 1,600 characters per text but also the option to include a picture directly in the text, and at no extra cost.
If you are U.S. customer, the system will automatically prompt you to send your message as a MMS if you go over the 160 character count. Canadian customers cannot send MMS messages, and therefore cannot send a message longer than 160 characters.
Learn more about Sending an MMS message.