SMTP Node for Sending Emails Using User Credentials

I’d like to request a new feature: an SMTP node that allows users to send emails using their own email credentials. This would enable users to configure SMTP settings directly in AgenticFlow and send custom emails from their own accounts as part of their flows.

This feature would be useful for notifications, automated reports, or any workflow that needs to send emails programmatically.

Please consider adding support for popular email providers (like Gmail, Outlook, etc.) and allow both plain text and HTML email formats.