# GovDelivery Transactional Messaging Service (TMS) API

**Canonical:** https://apis.io/apis/granicus/govdelivery-tms-api/  
**Provider:** Granicus — https://apis.io/providers/granicus/  
**Base URL:** https://tms.govdelivery.com  
**Documentation:** https://developers.govdelivery.com/api/tms/

GovDelivery Transactional Messaging Service (TMS) API is one of 26 APIs that [Granicus](https://apis.io/providers/granicus/) publishes on the [APIs.io](https://apis.io/) network. Tagged areas include Messaging, Email, and SMS. The published artifact set on APIs.io includes API documentation.

REST API for sending transactional email, SMS and voice messages, managing message templates, keywords, inbound messages and webhooks, published by Granicus as a RAML 0.8 contract (baseUri https://tms.govdelivery.com, token authentication).

## Machine-readable artifacts (4)

- **RAML** — https://artifacts.apis.io/granicus/openapi/_original/granicus-govdelivery-tms.raml
- **RAML (provider-hosted)** — https://developers.govdelivery.com/api/tms/tms.raml
- **Documentation** — https://developers.govdelivery.com/api/tms/
- **APIsJSON** — https://artifacts.apis.io/granicus/apis.yml

## Other Granicus APIs (12)

- [GovDelivery Communications Cloud API](https://apis.io/apis/granicus/govdelivery-communications-cloud-api/)
- [Granicus Platform SOAP API](https://apis.io/apis/granicus/platform-soap-api/)
- [Granicus Actions API](https://apis.io/apis/granicus/granicus-actions-api/)
- [Granicus Bodies API](https://apis.io/apis/granicus/granicus-bodies-api/)
- [Granicus Body Types API](https://apis.io/apis/granicus/granicus-bodytypes-api/)
- [Granicus Code Sections API](https://apis.io/apis/granicus/granicus-codesections-api/)
- [Granicus Event Items API](https://apis.io/apis/granicus/granicus-eventitems-api/)
- [Granicus Events API](https://apis.io/apis/granicus/granicus-events-api/)
- [Granicus Indexes API](https://apis.io/apis/granicus/granicus-indexes-api/)
- [Granicus Matter Attachments API](https://apis.io/apis/granicus/granicus-matterattachments-api/)
- [Granicus Matter Code Sections API](https://apis.io/apis/granicus/granicus-mattercodesections-api/)
- [Granicus Matter Histories API](https://apis.io/apis/granicus/granicus-matterhistories-api/)

## Tags

Messaging, Email, SMS

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/granicus/govdelivery-tms-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/granicus/.