<ul><li>Microsoft has implemented new rules for bulk emails sent to Outlook users to reduce spoofing, phishing, and spam activity.</li><li>Companies and admins sending over 5000 emails per day to Outlook addresses must adhere to authentication protocols like SPF, DKIM, and DMARC.</li><li>Failure to comply with the new rules may result in emails bouncing back instead of reaching the recipient's inbox, impacting marketers and publishers who rely on mass email campaigns.</li><li>Microsoft's goal is to combat spam, spoofing, and phishing threats, although ensuring compliance with these authentication standards might pose challenges for email marketers and publishers.</li></ul>

Microsoft enforces strict rules for bulk emails on Outlook

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