Is there mail client integration now, too? That was the big missing link the last time I tried them... the inability to accept and/or reply on meeting invites

Is there mail client integration now, too? That was the big missing link the last time I tried them... the inability to accept and/or reply on meeting invites and handle both the email and the calendar part. I was always able to view my calendar from linux, and could even edit/update personal calendar events, but I always had to fall back to windows or web to handle meeting invites. Pretty much everyone who uses O365 calendar is going to be using emailed invites and they need to work to make this a solution, but I never saw much traction on addressing that issue.