I frequently copy and paste events from my work calendar to my personal calendar. When I copy an event sent via Google Calendar to my "Family" calendar (A calendar set up via my personal email to share via my family), it asks me whether I'd like to send out a notice to all participants. Most of the time I hit no, but I keep accidentally hitting yes, resulting in reply-all strings resulting in "This invitation was sent as a mistake" and "haha" and overall wasting everyone's time. I don't trust myself to not accidentally hit yes. I frequently get hit by the "Would you like to synchronize your calendar?" question as well, where I hit yes immediately, thus I end up responding yes to the wrong question and... I just want to disable sending emails from Lightning entirely. Additionally I am using Provider for Google Calendar 4.4.2 in order to use my gmail calendars in Thunderbird.