Yes all members in the US and Canada get text alerts. New members get an email with the ability to opt in to receive text alerts. If you can't find that email then email us at firstname.lastname@example.org and we will resend the email to you.
Our TheoTrade mobile app allows you to receive push notifications. All text alerts are sent by push notification as well so even if you're outside of the US or Canada you can receive instant alerts. You can get the app by searching App Store or Play Store for TheoTrade Mobile. Your log in is the same you use for the website.