osTicket v1.10 (stable) and Maintenance Release v1.9.15 are now available! Go get it now
it worked but stopped few weeks ago: e-mail notifications on new activities in tickets.
Agents receive e-mail notification on new tickets - works like charm.
Agents receive e-mail notification on internal messages.
Agents don't receive e-mail when customer replies to an existing ticket.
In settings - tickets - notifications everything is activated in this section.
Many thanks and KR