SMS REST API Release Notes

See how the Sinch SMS REST API is evolving and find out about new features and bug fixes. Dates are in YYYY-MM-DD format.

2024-05-02

• Added MMS support for MO and MMS support for receiving messages in US, Canada, Australia and Puerto Rico

2023-06-30

• Added MMS support (currently only supported for mobile terminated messages in the US) and MMS support for send messages

2023-06-20

• Limited sending to verified numbers when account is in test mode

2023-05-08

• Added support for per_recipient_final delivery report type

2023-03-28

• Added support for 0-prefixed shortcodes. Keyword and 0-prefixed short code based callbacks are not supported.

2022-05-25

• Enabled filtering on client reference when listing delivery reports
• Enabled filtering on client reference when listing batches
• Enabled filtering on client reference when listing inbounds

2022-01-21

• Stopped altering non-delivered delivery report status codes from 0 to 34

2022-01-02

• New encoding field in recipient delivery report visible only for messages with Auto Encoding enabled. Contact your account manager to turn on Auto Encoding.

2021-12-07

• Added List delivery reports endpoint

2021-08-31

• Allowed up to 1600 characters in parameter values

2021-06-08

• Allowed for shorter MSISDNs (phone numbers) to fit specific countries/places

2021-05-11

• HMAC support in callbacks
• Added TON and NPI as optional parameters

2021-04-27

• Date-time format update

2020-10-20

• Allowed multiple access tokens per account. Contact your account manager to use this feature.

2020-09-22

• Support for verified numbers
• Increased max length of username for OAuth callbacks from 32 to 128

2020-06-16

• Allowed sending MCC / MNC in delivery receipt

2020-02-25

• Added applied originator to delivery report

2019-10-12

• Increased max limit of to field from 100 to 1000.
• Added ability to set max number of concat parts on account level. Contact your account manager to set on account level. Or set per batch here .