# Documentation | SMTP Express - The Express Emailing Experience for Businesses and Developers

## Docs

- [Project Credentials](https://docs.smtpexpress.com/essentials/credentials.md): Connect to the SMTP Express API using your project credentials.
- [Connect your domain](https://docs.smtpexpress.com/essentials/domains.md): Or bring your own smtp server
- [Introduction](https://docs.smtpexpress.com/introduction.md)
- [How to connect your Gmail account to SMTP Express](https://docs.smtpexpress.com/knowledge-base/sending-with-gmail.md): Turn your gmail account into a transactional powerhouse.
- [Quickstart Guide](https://docs.smtpexpress.com/quickstart-guide.md): In this guide, you will learn how to create a project, test email delivery using Quick Send and interact with the Send API — all in under 5 minutes!
- [SMTP Express Templates](https://docs.smtpexpress.com/send/attachments.md): Extend templates to create configurable email presets
- [SMTP Express Templates](https://docs.smtpexpress.com/send/calendar.md): Extend templates to create configurable email presets
- [Send a transactional email using SMTP Express](https://docs.smtpexpress.com/send/message.md): Extend templates to create configurable email presets
- [SMTP Express Templates](https://docs.smtpexpress.com/send/presets.md): Extend templates to create configurable email presets
- [SMTP Express Templates](https://docs.smtpexpress.com/send/templates.md): Extend templates to create configurable email presets

## Optional

- [Community](https://discord.gg/DfAFqVgQY5)