Hello,
Thank you for posting to the community. As mentioned in this
article. SmarterMail's team workspaces are built on WebRTC. Increasing the number of users would increase client CPU load and bandwidth requirements.
However, I will go ahead and submit this as a feature request and we can see what we can do. 😃
Regards,
Zach Sylvester
Software Developer
SmarterTools Inc.
www.smartertools.com