Hi Mr Textra,
My information: HUAWET G740-L00 (5",4G/32Gsd), android 4.1.2, french)
my curect version 3.6 has the same problem as the previous version: I use Mighty text to text from my phone;
each i go on Textra->parameters and i change something (whetever it is),
the emails cannot be sent anymore with my Mighty text web application.
What is more, when I install "MY SMS" (another sms-web-app), the problem lasts;
how to get rid of the problem: I unistall textra, reboot, reinstall textra, upgrade it, and touch no parameters.

I hope you'll be able to fix the bug: I love textra and mighty text. lovely apps.
Have a nice day
Xavier mondavelo@gmail.com