I have a Lumia 735 with Windows 10 Mobile installed. Ever since a few days ago, I can't send replies for emails from my Google account. If I create a new mail, the send button is enabled, but if I try to reply to an email, only the attach button is active, whereas delete and send are inactive. The strange part is that if I use another email accounts, reply is working fine.

Update: soft-reset does not solve the problem.

Update 2: there's a thread about this problem on Windows Central forum, if I get any solution I'll post it.

Here's a screenshot about the problem: send button is disabled

Device information:

Version: 1511
OS build: 10.0.10586.218
Firmware revision number: 02177.00000.15184.36003
Hardware revision number: