Outlook not sending group emails

George Loomans 0 Reputation points
2026-09-13T19:28:02.42+00:00

My outlook will not send a group email. Can you help me with this issue. I just left my account and am on my wife's family account since we were both paying the family amount.

Outlook | Windows | Classic Outlook for Windows | For home
0 comments

2 answers

Sort by: Newest
Most helpful Newest Oldest
  1. Ian-T 11,810 Reputation points Microsoft External Staff Moderator
    2026-09-14T02:49:13.2+00:00

    Hi @George Loomans

    First, please feel free to check out the AI answer

    Joining your wife’s Microsoft 365 Family subscription should not replace or merge your email account. Each person continues using a separate Microsoft account, mailbox, and contacts.

    Could you clarify what happens when you send the group email?

    • Do individual emails send normally?
    • Is this a personal contact list you created, or an Outlook Group with its own email address?
    • Do you receive an error or non-delivery message? If so, please share the exact wording, removing any personal email addresses.

    Also, please try sending the same group message from Outlook.com in a browser. This will help determine whether the problem is with the group itself or the Classic Outlook configuration.

    Was this answer helpful?

  2. AI answer

    2026-09-13T19:28:18.06+00:00

    Try these checks in order for Outlook for Windows home accounts:

    1. Check whether the message is stuck in Outbox.
      • Open the oldest stuck message first.
      • If it has a large attachment, remove it and try again.
      • In Outlook.com, attachments larger than 25 MB cannot be sent.
      • In classic Outlook, large attachments can also block that message and later messages.
    2. Make sure Outlook is online.
      • In classic Outlook, look at the bottom status bar.
      • If it shows Disconnected, Working Offline, or Trying to connect..., Outlook cannot send mail.
      • Go to Send/Receive and turn off Work Offline, then try sending again.
    3. Force a send/receive.
      • In classic Outlook, go to Send/Receive > Send/Receive All Folders.
      • If needed, use the Sync button on the View tab to force a manual sync.
    4. Check the recipient count and account sending limits.
      • If this is an Outlook.com family/personal account, sending to a group can hit temporary sending limits, especially after account changes or on accounts with lower sending reputation.
      • A group email counts toward sending limits by recipient.
      • Newer or recently changed Outlook.com accounts can have a lower temporary sending quota until account credibility increases.
    5. If the message is being blocked only for group sends, split the group into smaller batches.
      • Send to fewer recipients at a time.
      • Avoid sending multiple large group messages back-to-back.
    6. Check whether the mailbox is full.
      • If the inbox is full, Outlook.com cannot send or receive new messages.
      • Empty Junk Email if needed to free space.
    7. If the account password was changed recently, sign in again in Outlook.
      • Outlook may prompt for the account password.
      • Complete the sign-in flow and retry.
    8. If a non-delivery report appears, read the reason in that message.
      • Common causes include invalid addresses, recipient mailbox full, server issues, or spam filtering.

    If the issue started after moving to a family account, the most relevant supported cause is that Outlook.com may be applying temporary sending restrictions or lower quota behavior. In that case, sending smaller batches and allowing time for the account to establish normal sending history is the supported workaround.

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

    Was this answer helpful?

Your answer

Answers can be marked as 'Accepted' by the question author and 'Recommended' by moderators, which helps users know the answer solved the author's problem.