Message Parts per Second (MPS) limits - Amazon Pinpoint

Message Parts per Second (MPS) limits

SMS messages are delivered in 140-byte sections known as message parts. Messages that are very long, or that contain many multi-byte characters, are split into several message parts. These messages are usually re-assembled on the recipient's device, appearing as a single long message rather than several small ones. For more information about SMS character limits, see SMS character limits in Amazon Pinpoint.

For this reason, SMS throughput limits are measured in Message Parts per Second (MPS)—that is, the maximum number of message parts that you can send in a second. Your MPS limit depends on the destination country of your messages, as well as the type of phone number (origination number) that you use to send the message. For example, if you use a United States short code to send messages to recipients in the US, you can send 100 MPS. However, if you use a US toll-free number to send to US recipients, you can only send 3 MPS.

The following sections describe the MPS for various types of origination numbers and for various countries.

Short codes

The following table shows general MPS limits for dedicated short codes.

Geographic area MPS
United States (US) 100 MPS
Canada (CA) 100 MPS
All other countries and regions Varies by country.

Long codes

The following table shows general MPS limits for dedicated long codes.

Geographic area MPS
United States (US) (10DLC) Varies. Carrier-dependent, based on the campaign type or brand level.
Canada (CA) 1 MPS
All other countries and regions 10 MPS

Toll-free numbers

Toll-free numbers are currently only available in the United States. US toll-free numbers support 3 MPS.

Important

If your throughput requirements exceed 3 TPS, you should use a 10DLC number or a short code. If you purchase multiple toll-free numbers and attempt to distribute your throughput across them, the mobile carriers are likely to filter all of your messages from their networks.

Sender IDs

The following table shows general MPS limits for sender IDs.

Sender ID type MPS
Customer-defined using the Amazon Pinpoint API or from the Amazon Pinpoint console 10 MPS
Shared routes/customer-owned number 10 MPS