# Transactional Email: Single-Send API

**URL:** <https://community.hubspot.com/t/transactional-email-single-send-api/33776>\
**Category:** Releases and Updates\
**Created:** [December 8, 2015, 6:47pm UTC](https://community.hubspot.com/t/transactional-email-single-send-api/33776 "2015-12-08T18:47:03Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jeffreyr](https://d10pqhm3lwygmk.cloudfront.net/user_avatar/community.hubspot.com/jeffreyr/32/62470_2.png) [@jeffreyr](https://community.hubspot.com/u/jeffreyr)\
**Post date:** [December 8, 2015, 6:47pm UTC](https://community.hubspot.com/t/transactional-email-single-send-api/33776/1 "2015-12-08T18:47:03Z")

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Transactional email is the best way to send, and deliver, relationship-driven emails. But most transactional email is hard. If you want to customize individual transactional emails, it involves a significant amount of engineering time, and you may end up losing control over the email.

**W**** elcome to the HubSpot Transactional Email Single-Send API**. You can create and send relationship-driven email from the same email interface within HubSpot, and use custom tokens that connect to your APIs to insert information directly from your own internal systems.

The single-send API combines the power integrating information from your own database and utilizing the same interface and infrastructure with HubSpot.

 ![|600](https://d2qpr2jzcazej7.cloudfront.net/original/3X/e/d/ed72a561c4e1aad483b8df8c1797f94b16585832.png)

**Want more information?**

1. Check out the updated Knowledge article on Transactional Email: [http://knowledge.hubspot.com/articles/kcs\_article/email/how-to-use-transactional-email-in-hubspot](http://knowledge.hubspot.com/articles/kcs_article/email/how-to-use-transactional-email-in-hubspot)
2. Dig in to the API documentation for Single-Send Transactional Email: [http://developers.hubspot.com/docs/methods/email/transactional\_email/single-send-overview](http://developers.hubspot.com/docs/methods/email/transactional_email/single-send-overview)

If you are interested in Transactional Email please talk to your Customer Success Manager about the [Transactional Email Add-on](http://www.hubspot.com/products/email/transactional-email).