I just got a notification while sending a particularly long text message that "textra is sending a large number of SMS messages" which, according to your support page is an Android issue. However, when I click on Allow on the notification box (actually, I got 4 or 5 of these notifications one after the other and clicked Allow on each), I end up with a green bar and exclamation point next to the message which looks like the message didn't go through. If there's a limit on message length, I'd rather Textra notify me while I'm typing rather than hearing about it after I try to send it.