To ensure that emails sent from your account are not marked as spam, please follow these steps:

1. Verify your mail server settings.
2. Use valid SPF and DKIM.
3. Check for broken links in your emails.
4. Maintain a good sender reputation.
5. Check for valid and up to date unsubscribe links.
6. Activate email engagement monitoring.
7. Regularly review and clean up your contact list.