[kronolith] Email notifications attendees duplicated when event is created

[Fábio Sousa]

Hello,

I'm using Evolution email client with CardDav and CalDav option 
configure. When I'm creating a meeting request where I invite some 
attendees, each attendee receives two emails. One sent by horde webmail 
and another by Evolution client .

I'm missing an option for this in the admin pages?

Thank you.