> ## 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).

# With the mobile phone number

# With the mobile phone number

The structure of the e-mail address with the mobile phone number is as follows:

_[Mobile phone number]@threema.eCall.ch_

Example: 0041790000000@threema.eCall.ch

![](https://storage.crisp.chat/users/helpdesk/website/eaa1358e28d0c000/threema-mail-handynummer-en_16rgc95.jpg)