Clara - Clara is a virtual employee that schedules your meetings, getting you to the work that matters, faster.
Shortwave - Email smarter & faster with a reinvented experience for your Gmail
Mia - Virtual assistant for meetings
Assistant.to - GoToMeeting. Put your GoToMeeting link in the Assistant. to "Location" field. Once the recipient selects a time, you will both receive an invite with a unique GoToMeeting link.
Perssist Virtual Assistants - Affordable virtual assistant service
If No Reply - Simple email automation that works for Gmail