As you can see from the link, we can create a Event and invite our friends to join it.
But I believe not all player always check their Lodestone.

http://eu.finalfantasyxiv.com/lodest...al/update_log/

Can we have ingame notification for this, like email or alarm?

And I hope we can manage our own global event and it will distribute to everyone or some certain player. eg: Lalafell meetings conquest Eorzea or flash mob.

Of course we can filter it to prevent spam