The issue with follow up emails sending with no subject has been fixed.
We appreciate your patience and understanding in this matter
Posted May 29, 2020 - 09:50 UTC
The issue has been identified and we are preparing fix that will be released within next few days
Posted May 28, 2020 - 08:10 UTC
There is a small chance that follow up emails might send without subject although there is no reason for it. Our development team is currently investigating the issue and will do what's necessary to provide a fix as soon as possible.
Please note that the chance of this happening is very slim, however, we wanted to inform you of such possibility.