> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.ecall-messaging.com/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# Dispatch via interface (API)

# Sending fax via interface

A fax message can be sent not only by web browser, e-mail or text message but also by using our TCP/IP or HTTP/HTTPS protocols.

[Learn more about those interfaces (APIs) >](https://faq.ecall.ch/en/article/interfaces-connections-and-protocols-1genk66/)