bcc email list limitations?

Chuck Weir 0 Reputation points
2026-10-05T18:43:22.38+00:00

why cant i send a bcc email to a 89 member mail list?

Outlook | Windows | Classic Outlook for Windows | For business
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  1. Lin v 1,545 Reputation points Independent Advisor
    2026-10-05T19:27:03.5533333+00:00

    Hi Chuck,

    Sending to 89 recipients in the BCC field would normally be within the supported recipient limits for Microsoft 365 business accounts. Therefore, kindly provide a few additional details so the community can better understand the situation and suggest the most appropriate troubleshooting steps.

    • Are the 89 recipients entered individually in the BCC field, or are you sending to a Contact Group/Distribution List?
    • What happens when you try to send the message? Do you receive an error message or non-delivery report (NDR)?
    • Does the issue occur only with this particular recipient list, or with any large group of recipients?
    • Are the recipients internal to your organization, external, or a mix of both?
    • Does the same issue occur when sending the message through Outlook on the web?

    The more details you can provide, the easier it will be for the community to identify the cause and recommend the appropriate next steps.

    I look forward to your response.

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