NC Talk - disable sending messages to mail and mail notification

Hi,

i want ask, how to disable sending messages to email and email notification from NC Talk (no email messages from Talk).

Diagnosis report

Nextcloud Talk Desktop
Version v1.1.6
Built-in Talk version v21.0.2
Release channel stable
Operating system Windows_NT 10.0.19045 (Windows 10 Pro)
Executable Path C:\Users\marian\AppData\Local\NextcloudTalk\app-1.1.6\Nextcloud Talk.exe
Connected to -
Nextcloud server version 30.0.8
Nextcloud Talk version 20.1.6
notifications app enabled :white_check_mark: yes
notify_push app enabled :white_check_mark: yes

Application config

{
  "launchAtStartup": true,
  "theme": "default",
  "systemTitleBar": true,
  "monochromeTrayIcon": false,
  "zoomFactor": 1,
  "playSoundChat": "always",
  "playSoundCall": "always",
  "enableCallbox": "always",
  "secondarySpeaker": false,
  "secondarySpeakerDevice": null
}