If your email account has been suspended or restricted for suspicious activity, here are some steps to take:

1. Change your password and create two-factor authentication for added protection.
2. Contact your email provider for information on what caused your account suspension or restriction.
3. Ensure your computer is virus and malware free using up-to-date antivirus software.
4. Check for any unusual activity or access to your account.
5. Visit the security settings page for your provider and review recent activity.
6. Contact your provider if you believe there has been malicious activity with your email account.