> For the complete documentation index, see [llms.txt](https://docs.secumailer.com/manuals/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.secumailer.com/manuals/api/public.md).

# REST

The documentation for the SecuMailer Public REST API can be found here: <https://developer.secumail.nl>

The API key provided by SecuMailer needs to be used in header `x-api-key`