Check if your domain meets Google, Yahoo, and Microsoft Outlook's email sender requirements. Essential for bulk senders (5,000+ emails/day).
Google and Yahoo require email authentication (SPF, DKIM, DMARC) for all senders since February 2024. Bulk senders must also implement one-click unsubscribe and maintain low spam rates. Since May 2025, Microsoft Outlook (outlook.com, hotmail.com, live.com) enforces the same baseline for senders of 5,000+ emails/day — non-compliant mail is rejected with error 550 5.7.515. Read the Outlook requirements explained.
Enter your domain above to check if you meet the Google, Yahoo, and Microsoft Outlook sender requirements. Avoid having your emails marked as spam or rejected.