How to make thunderbird default mail client

To make Thunderbird the default mail client on your computer, you'll need to follow these steps:

Windows:

1. Open Thunderbird and go to Tools > Options.
2. In the General tab, click on Set as default mail client.
3. Click OK to save the changes.

Alternatively, you can also set Thunderbird as the default mail client through the Windows Control Panel:

1. Go to Control Panel > Programs > Default Programs > Set your default programs.
2. Select Thunderbird from the list of programs.
3. Click Set this program as default.
4. Click OK to save the changes.

macOS:

1. Open Thunderbird and go to Thunderbird > Preferences.
2. In the General tab, click on Make default mail client.
3. Click OK to save the changes.

Alternatively, you can also set Thunderbird as the default mail client through the macOS System Preferences:

1. Go to System Preferences > General.
2. Click on Default email reader.
3. Select Thunderbird from the dropdown menu.
4. Click OK to save the changes.

Linux:

The process to set Thunderbird as the default mail client on Linux varies depending on the distribution you're using. Here are some general steps:

1. Open Thunderbird and go to Edit > Preferences.
2. In the General tab, click on Make default mail client.
3. Click OK to save the changes.

Alternatively, you can also set Thunderbird as the default mail client through the Linux desktop environment's settings:

• On GNOME, go to Settings > Details > Default Applications > Email.
• On KDE, go to System Settings > Applications > Mail Client.
• On XFCE, go to Settings > Appearance > Behavior > Default Applications > Email.

Once you've set Thunderbird as the default mail client, it should open automatically when you click on email links or try to compose a new email.