Reply to received email,

[cbaggio]

Problem when replying email received from client, I keep getting the message sending, sending, and it will not!

[JohnDoh]

there could be a lot of reasons. what version of roundcube are you running? is there anything in the roundcube error log? what about in the browser console are there any JS errors? also check the network tab to see the exact response from the server. Also have a look at this https://www.roundcubeforum.net/index.php/topic,29042.msg74144.html#msg74144