Follow these steps to send Salesforce Marketing Cloud Email:
1. In the Sales or Service cloud, Navigate to lead, contact, person account -> Click on Send Marketing Cloud Email.
2. To access Marketing Cloud emails -> Click Find -> Select an Email -> select from email address -> select reply to an email address -> Select Disable Individual Level Tracking if you want to prevent subscriber level tracking from being created for the send -> Set time and date for sending.
3. Verify that you have permission to send an email to the recipient.
4. Send the email.