> For the complete documentation index, see [llms.txt](https://docs.messageflow.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.messageflow.com/email/e-mail-api/advanced-options-e-mail-api.md).

# Advanced Options E-mail API

## Priority Email Sending - Email Priority

For time-critical email messages, such as authentication codes, one-time passwords, or security alerts, MessageFlow offers a dedicated channel: MessageFlow Priority. This service ensures maximum processing and sending priority within our infrastructure. 

Detailed information regarding MessageFlow Priority and its applications can be found in the dedicated section: [MessageFlow Priority](/advanced-features/messageflow-priority.md)