So this is a really old post, but if it helps anyone else that lands here, I was able to solve the problem of long texts sent from Textra to an iPhone being received as blank (or garbled text). In Textra, just go to the SMS settings and enable Convert Long SMS to MMS.
So this is a really old post, but if it helps anyone else that lands here, I was able to solve the problem of long texts sent from Textra to an iPhone being received as blank (or garbled text). In Textra, just go to the SMS settings and enable Convert Long SMS to MMS.