As a typical end user you probably won't understand what that "via" means. All you see is that your e-mail was sent "via" some unknown thing you don't recognize

As a typical end user you probably won't understand what that "via" means. All you see is that your e-mail was sent "via" some unknown thing you don't recognize. Even if you do understand - isn't the "via" specifically designed to reduce trust? "Hey, head's up, this message actually came in through this third-party"