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email sending with pop account

Howard Lomas 0 Reputation points
2026-06-04T09:58:19.39+00:00

I cany send emails from my pop3 account in outlook and receiving them takes many hours. No problems with my microsoft 365 and IMAP accounts.

Outlook | Windows | New Outlook for Windows | For home
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  1. Chloe-V 8,080 Reputation points Microsoft External Staff Moderator
    2026-06-04T14:28:07.4166667+00:00

    Hi Howard Lomas,

    Welcome to Microsoft Q&A forum. 

    Since this behavior only affects the POP account in New Outlook for Windows, while your Microsoft 365 and IMAP accounts are working normally, we’d like to narrow this down to whether the behavior is specific to New Outlook or to the POP provider.

    Could you please try the following:

    • Send a test email from the POP account, then select Sync in New Outlook to check whether the message sends immediately.
    • Sign in to the same mailbox through the provider’s webmail and check whether sending and receiving work normally there.
    • If webmail works normally, please try removing and re-adding the POP account in New Outlook.

    If possible, please also share the POP provider name and any message shown after clicking Sync, so we can help narrow this down further.

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".  

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread. 

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  2. AI answer

    2026-06-04T09:58:33.88+00:00

    Troubleshooting should focus on the POP3 account configuration and connectivity, since Microsoft 365 and IMAP accounts work normally.

    1. Verify Internet connectivity
    • Confirm that the device has a stable Internet connection by opening a browser and accessing sites such as microsoft.com or bing.com. If these fail, resolve network issues first.
    1. Check Outlook is online and syncing
    1. Confirm POP3/SMTP server settings and ports
    • Compare POP3 and SMTP settings with those provided by the email provider.
    • Pay particular attention to the POP3 port and encryption:
      • If using SSL/TLS, many providers require port 995 for POP3. A misconfigured port (for example, 993 instead of 995) can prevent timely receiving of messages or cause long delays.
    • If recent changes were made to the POP3 port or encryption, revert to the provider’s recommended values.
    1. Enable SMTP authentication for the POP3 account
    • Some POP/IMAP services require authentication on the outgoing (SMTP) server. If sending fails while receiving works (even slowly), this is a common cause.
    • In Outlook for Mac the steps are:
      1. Tools > Accounts.
      2. Select the POP account.
      3. Under Outgoing server, select More Options.
      4. Choose the correct authentication type and enter credentials.
    • In Outlook for Windows, use the equivalent account settings dialog to ensure “My outgoing server (SMTP) requires authentication” (or similar) is enabled and uses the same credentials as the incoming server.
    1. Check for POP/legacy protocol restrictions
    • If the POP3 account is hosted in Exchange Online or Microsoft 365, POP3/IMAP4 might be disabled by security defaults or by disabling Basic authentication. In that case, POP access will be unreliable or blocked. POP3 may need to be enabled for the user, or a modern protocol (such as MAPI/Exchange or IMAP with modern auth) should be used instead.
    1. Run Inbox Repair Tool if local data is corrupted (classic Outlook)
    • If the POP3 account uses a local .pst file and issues persist, run the Inbox Repair Tool to repair the .pst file, then test send/receive again.
    1. If still failing
    • Capture any specific error messages shown in the Send/Receive status or error dialog and compare them with the known error list for Outlook send/receive issues. Those codes can guide further targeted fixes (for example, server not found, connection refused, timeouts).

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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