API Reference

Send SMS messages

post
https://api.tracksend.co/messaging/v1/sms

Submit one SMS or up to 1000 recipients. A 202 response means the submission was queued; it does not confirm delivery. If the request times out, retry the same request with the same Idempotency-Key to avoid sending duplicates. Use a new key for each new submission.

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Body Params
string
required
^[A-Za-z]{2}$

Two-letter country ISO code used to normalize the recipient numbers.

string
required

Sender ID registered for this account.

required

One recipient as a string, or 1 to 1000 recipients as an array of strings.

string
required
length ≤ 4096

SMS message text.

uri

Optional HTTP or HTTPS URL for message status callbacks.

Headers
string
length ≤ 191

Client-generated key for safe retries. If omitted, Messaging generates one and returns it in the response header. Reusing a key with a different request returns 409.

Responses

Updated about 19 hours ago

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Updated about 19 hours ago

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