# Single send

*Marketing*. A non-recurring email message that communicates non-automated, non-sequential content.

You can deliver this message to a list or segment of your contacts, in the moment or scheduled for future delivery. Unlike an [automated email][] series such as a [drip campaign][], this message doesn't belong to a series of related messages designed to work in sequence, a [campaign][].

Single Sends work for both [transactional email][] and [promotional message][] use cases:

* promotional offers
* engagement campaigns
* newsletters
* announcements
* legal notices
* policy updates

[campaign]: /docs/sendgrid/glossary/campaigns

[automated email]: /docs/sendgrid/glossary/automated-email

[drip campaign]: /docs/sendgrid/glossary/drip-campaign

[transactional email]: /docs/sendgrid/glossary/transactional-email

[promotional message]: /docs/sendgrid/glossary/email-marketing