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More info - FAQ ProTexting FAQ
What is a Keyword?
What is a Short Code?
Short Code 82257
Short Code 63566
Short Code 41242
Customer Support (HELP) for Campaigns
Why should I have a keyword in order to register?
What do I get when I register with
How do I start collecting mobile numbers?
Would I be able to send Bulk Text Messages?
What are the steps to follow when sending Group/Bulk Text Messages?
How to manage Distribution Lists
Would I receive replies from my Bulk Messages?
Amazon App - Test Orders
How much is one individual message?
Are replies FREE of charge?
How to setup text message forwarding?
Is there a limit to the amount of characters in a message?
How long does a message take to be delivered to its recipients?
What is the limit on my outgoing Text Messages?
How is a multipart SMS processed?
Why some of my contacts did not received my Text Message?
If my messages were not received, do I still get charged?
Which are the mobile providers that works with?
Would I or my clients receive at any point advertising messages from third parties?
Is Text Message delivery guaranteed to be delivered to my recipients?
How is my privacy protected?
I own a website and want to provide Text Messaging to my clients. Can I use for this?
What if there is a new local network in my area and i need coverage to it?
List of Allowed Characters for Sending Text Messages (group texting, single SMS, API outgoing text message)
Single characters that are considered as two when used in a text message
MMS file requirements
MMS outgoing messaging: Supported USA Carriers
Long Codes - Virtual Numbers Verifications
CNAME Set up instructions for Mobile Website Builder
SMS API Using Curl SSL Certification Check Script

MMS outgoing messaging: Supported USA Carriers

Supported Mobile Carriers and Limitations for Outbound MMS messaging.

- Photos and Videos are supported for ALL outgoing MMS messages.

- Mobile handset need to activated the feature to receive MMS.

- Looking for MMS API?  Click here for our API MMS Messaging platform >>


Mobile carrier (operator) Maximum MMS file size Supports delivery receipts?
United States
AT&T 1 MB Yes
MetroPCS(GSM) 1 MB Yes
Sprint 2 MB Yes
T-Mobile USA 1 MB Yes
US Cellular 1 MB Yes
Verizon Wireless 1.2 MB Yes


- All other carriers will still receive the messages, but our intelligent messaging platform will convert the MMS into a text message, with embedded short URL MMS link.

- All other covered countries for messaging have MMS support via text message with embedded short URL MMS link.

Text Messaging is the MOST efficient way to communicate with your audience

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