Change default mail sender outlook

To change the default mail sender in Outlook, you can follow these steps:

Method 1: Change the default sender through Outlook settings

1. Open Outlook and go to the "File" menu.
2. Click on "Options" and then select "Mail" from the left-hand menu.
3. Under "Compose messages", click on the "Send messages" button.
4. In the "Send messages" window, click on the "More settings" button.
5. In the "Internet E-mail Settings" window, click on the "Advanced" tab.
6. In the "Advanced" tab, click on the "Outgoing server" dropdown menu and select the email account you want to use as the default sender.
7. Click "OK" to save the changes.

Method 2: Change the default sender through the Outlook account settings

1. Open Outlook and go to the "File" menu.
2. Click on "Account Settings" and then select "Manage Accounts" from the dropdown menu.
3. Select the email account you want to use as the default sender and click on the "Edit" button.
4. In the "Account Settings" window, click on the "More Settings" button.
5. In the "Internet E-mail Settings" window, click on the "Advanced" tab.
6. In the "Advanced" tab, click on the "Outgoing server" dropdown menu and select the email account you want to use as the default sender.
7. Click "OK" to save the changes.

Method 3: Change the default sender through the Outlook registry

1. Open the Registry Editor (Regedit.exe) on your computer.
2. Navigate to the following key: HKEY_CURRENT_USER\Software\Microsoft\Office\16.0\Outlook\Options\Mail
3. Create a new string value called DefaultSender and set its value to the email address you want to use as the default sender.
4. Close the Registry Editor and restart Outlook.

Note: The registry method is more advanced and requires caution when editing the registry. Make sure to back up your registry before making any changes.

After changing the default sender, you can test it by composing a new email and clicking on the "Send" button. The email should be sent using the new default sender.