We just added a much requested feature for MightyText Web App users on Google Chrome browser.
When you get an incoming SMS popup notification, if you either click the popup notification (which brings up the web app), or click the red X in the notification (which closes it), it will now mark the message as “read” on your phone.
This is working starting with version 7.2 of the MightyText Chrome Extension.
Reminder: you’re using the MightyText Web App on Chrome, then make sure you have the MightyText Chrome Extension installed to receive incoming SMS popup notifications.
Firefox Users: We will add this soon for Firefox popup notifications.