When you send messages with Mixmax, they are sent directly through your Gmail or Google Workspace account and will show in your Sent mail folder. For any individual message you schedule to send later or any sequence, Mixmax will hand the message over to Gmail to send at the time you select.
Mixmax uses the same standard SSL encryption as Gmail. We use OAuth to make sure all of your Mixmax messages can get delivered even when your computer is off or you've logged out of your account. This means we never store or even have access to your password.