---
title: "Changes to Send a message using an alphanumeric sender ID"
method: POST
path: "/messages/alphanumeric_sender_id"
---

# Changes to Send a message using an alphanumeric sender ID

`POST /messages/alphanumeric_sender_id`

> Every recorded change to this endpoint, newest first.

## Timeline

Changed in 1 of 47 revisions.

- **2026-05-26** `ac6be9fa50c1` — 1 info

## Changes

- **2026-05-26** `ac6be9fa50c1` — 1 info
  - added the optional property `data/num_chars` to the response with the `200` status

---

[Operation](https://skmtc.dev/team-telnyx/apis/telnyx-api/docs/messages/alphanumeric_sender_id/post.md) · [API](https://skmtc.dev/team-telnyx/apis/telnyx-api.md) · [Page](https://skmtc.dev/team-telnyx/apis/telnyx-api/changes/messages/alphanumeric_sender_id/post)