Mail Stuck In Mac Outbox

The Outbox in the Apple Mail app contains the failed emails when they were sent from your email account. The mail stuck in Mac outbox is a common problem in most of the email clients, but it can be fixed using the below-mentioned steps.

Solution: 1

  • Step 1:First, check whether you have a stable Internet connection on your Mac device.
  • Step 2:The internet connection error might probably be one of the reasons for the sent email failure on your Mac.
  • Step 3:Click the Apple menu and select the System Preferences option from the drop-down menu.
  • Step 4:Click the Network icon and go to the left-side panel.
  • Step 5:Check whether you have a green light under Wi-Fi or Ethernet.
  • Step 6:If the connection indicator light is red, check the connectivity of the Wi-Fi router and the modem.
  • Step 7:In the Network window, select the connection medium and click the DNS tab.
  • Step 8:Configure the appropriate IPv4 or IPv6 address and ports.
  • Step 9:If the mail stuck in Mac outbox problem persists, contact your ISP to fix the Internet error.

Solution: 2

  • Step 1:On your Mac, open the Mail app and click the Mail menu at the top of the screen.
  • Step 2:Select the Preferences option from the drop-down menu.
  • Step 3:Select Accounts and then go to the left-side panel.
  • Step 4:Choose your account and click the Account Information tab.
  • Step 5:Under Outgoing Mail Server, verify whether you have checked the Use only this server checkbox.
  • Step 6:Click the Outgoing Mail Server pull-down menu and select the Edit SMTP Server List option.
  • Step 7:Verify your email address in the Server Name field.
  • Step 8:Next, click the Advanced tab and verify the server ports and settings.
  • Step 9:If necessary, change the port numbers to default.
  • Step 10:Click OK to save the applied settings and close the Mail Preferences window.
  • Step 11:Now, send a test mail from the Mail app.
  • Step 12:If the mail stuck in Mac outbox problem persists, delete the Mail preferences file from the Library folder on your Mac.