DialLink supports plain-text messages only, with a character limit of 1,600 characters per message. Sending images or attachments is not supported in the app or on the web at this time.
These limitations are in place to:
Maximize message deliverability.
Ensure full compliance with carrier and industry standards.
Note. To send messages to or from U.S. numbers, your business must complete a business profile and go through the required registration process.