Hi Evgeniya,

Thank you for contacting Amplitude Support. Happy to help!

To create a cohort of users who don't have an email address in their UserID within the last 360 days, you can use the 'did not have user property' clause in your cohort definition. This will exclude any users who, at any point during the selected time range, had an email as their UserID.
 

For more details about identifying users who lack user properties or didn't perform events, please refer to our documentation.

I hope this helps. Please don't hesitate to let me know if you have any questions.

Best regards,
Thao


P.S. Checkout upcoming events and user meetups on our events page.

Thanks very much! it worked.