Announcing Preview SMS
I recently launched Preview SMS - a web application that allows you to see how your messages will appear to recipients on a variety of devices, at several text sizes.
It's extremely helpful to know where text will be truncated, as key information being shown in Notifications and Inboxes will help determine the likelihood that a recipient will open the message.
Currently, you can preview on iPhones going back to 2017's iPhone X, with four text sizes for each device. More devices and features are continuing to be added.