emails sent being flagged as spam

Hi Tiffany Glenn,

Thank you for posting your question in the Microsoft Q&A forum. 

Based on your description, I would like to clarify a few points to better understand the situation. Could you please confirm:

• When you say “emails sent from new Outlook email address”, do you mean that emails sent using the new Outlook client are being marked as spam and delivered to recipients’ Junk folders?
• Has this issue started recently or has it been happening since you began using Outlook?
• Do the emails you send contain multiple hyperlinks or attachments?
• Does this problem occur with all recipients or only specific ones?

From my research, here are some common causes and recommended actions when emails are flagged as spam:

1. Verify Email Authentication Records
   Microsoft 365 relies on proper configuration of SPF, DKIM, and DMARC records to authenticate your domain. Missing or incorrect records can negatively impact your sender reputation and cause emails to be marked as spam. If you are the IT admin (or can contact your IT team), please double-check these settings using the following official Microsoft article: Email authentication in Microsoft 365
2. Safe Sender Workaround
   Ask your recipients to add your email address to their Safe Senders list, then resend a test email to see if the issue persists. Follow this guide to add a sender to Safe Senders list: https://support.microsoft.com/en-us/office/add-recipients-to-the-safe-senders-list-in-outlook-be1baea0-beab-4a30-b968-9004332336ce
   Important: Avoid sending too many test emails in a short period, as this can increase your spam score.

Hope the suggestions above help. If you have any further update, feel free to share.

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