How can I enable notifications for the web client?

In order for the web client to display desktop notifications, the respective permission must be granted in the browser. If this permission was denied initially, it can be granted later as follows:

Chromium/Google Chrome

1. Close the web client
2. Insert “chrome://settings/content” in the URL bar, and press Enter
   
3. Under “Notifications”, click “Manage exceptions”
   
4. Change the Behavior of “https://web.threema.ch/” from “Block” to “Allow”
5. Open the web client

Firefox

1. Close the web client
2. Insert “about:preferences#privacy” in the URL bar, and press Enter
   
3. Under “Notifications”, click “Choose…”
   
4. First, select “https://web.threema.ch/”; then, click “Remove Site“ and “Save Changes”
   
5. Open the web client, and grant permission to send notifications

Opera

1. Close the web client
2. Insert “opera://settings” in the URL bar, and press Enter
   
3. First, click on “Websites”; then, under “Notifications”, click “Manage exceptions…”
   
4. Change the Behavior of “https://web.threema.ch/” from “Block” to “Allow”
   
5. Open the web client