Hi, Tam. Thanks for this report. All three should behave identically as far as deliverability goes. I will note that deliverability has some variability in it, so it's not always easy to track, especially with small sample sizes. Regardless of that, thank you for this feedback and thank you for this sample on email deliverability. We're always trying to track that better.

I made a note in our backlog to improve this UX and to only show one option if all three are the same. Thanks for that. 

Hey Tam,

As Woody said, these options should behave identically from a sending standpoint - the email send from your connected Gmail account, through Gmail's servers. Because you are sending from your Gmail account, your own email reputation will control your deliverability. Most of the time this is the best way to do things, as existing legitimate gmail/microsoft accounts usually have very good deliverability. However, if you are using a newer domain and immediately sending investing-related emails, it's entirely possible that recipient systems are marking your domain as spam due to the age of the sending domain and the finance-related content of the emails, especially if the recipients aren't contacts or haven't received emails from your address before.