Please observe the following specifications and limits when setting up your campaigns:
SMS Specification
Max Length for text: 160 Characters (Segment Calculator)
Supported Carriers: Read Here: List of carriers
MMS Specification
Max Length for text: 1600 Characters
Image Size: Recommended: 600KB. Allowed Max 5MB as Total Request size, including text
Image Format: GIF, JPEG, JPG, PNG
Video Size: Max 1.5 MB. Recommended size: 600 KB to 1 MB
Video Duration: Up to 40 Seconds
Video Format: MPEG, MP4
Audio Size: Max 1.5 MB. Recommended size: 600 KB to 1 MB
Audio Duration: Up to 40 Seconds
Audio Format: audio/basIc, mp4, mpeg, ogg, 3gpp, webm, amr
Supported Carriers: Read here: List of carriers
General Specifications
Default Sending Speed: 1MPS (1 Message Per Second), can send 14400 messages in 4 hours from 1 number.
Sending Speed - after A2P registration of the organization: 50 to 75 times of Default Sending Speed.
Can multiple numbers be used to send SMS & MMS: Yes
Allowed number types: 10 Digit number (10DLC) & Toll-Free Number (TF)
Macro Replacement or templating possible: Yes
Registration and Regulations:
Must include Opt-out Text: “Reply STOP to unsubscribe.” (it will be a part of 160 characters)
Must maintain an Opt-out List.
A2P registration for increasing the sending speed.