Use a clear subject line, double-check recipient addresses, avoid Reply All unless necessary, encrypt sensitive attachments, and proofread thoroughly before sending.

To prevent leaks, verify recipient addresses, review content carefully, and mark the email as confidential. Avoid "Reply All" unless necessary, and consider encryption for added security.

If its really is sensitive and could cause harm to someone or problems if it gets out, don’t put it in an email. Better options: - attach a password-protected PDF - just call the person - share via a secure file-sharing platform (Dropbox, Google Drive—but make sure it’s locked down) It doesn’t have to be overly complicated there’s just better ways than sending highly sensitive information in an email, message or text for that matter!

To prevent accidental leaks in a sensitive email, double-check recipients, ensuring only authorized individuals are included. Avoid using "Reply All" unless necessary. Use clear subject lines to minimize miscommunication. Encrypt attachments and sensitive data. Proofread thoroughly before sending, and consider a colleague's review. Enable "Undo Send" if available for errors.

First , what I read in question is: you're drafting an important email. It did not state you have to send or already send an important email. Then the question is how do one prevent information leaking that is part of the draft. I agree, don't type in any recipient address while drafting the email. Better yet, type email in password protected Word or Excel file first, note, not protect file from editing, but protect from opening. When draft is ready, the protected pdf is good option, or dropbox, or adding as attachment rather than writing as text in the email. Don't refer to info in email if you have no other option to use. If by accident email arrive at wrong recipient, they cannot read the file and don't know what the content is about.