- Step 1: On your Windows computer, launch the Mail app and click the Settings icon at the bottom-left corner of the screen.
- Step 2: On the right-side pane, click on Manage Accounts.
- Step 3: Choose the email account that is failing to send emails and click the Delete account from this device button.
- Step 4: After removing your email account from the Mail app, restart your computer and relaunch the Mail app.
- Step 5: Click the Settings icon again and select the Manage accounts option at the right-side panel.
- Step 6: Next, click the Add account button and re-add your email account.
- Step 7: After configuring your email account in the Mail app, check if you can send emails.
- Step 8: If the problem persists, move on to the next solution.