What does Calendly do well? It really helps a lot to keep track of day to day events. Great reminder setting. Very easy to use and collaborate with others. You can edit the events very easily. Can even schedule interviews. It can be integrated with Outlook, Office 365, and Google, and checks all calendars for conflicts to avoid double-booking. It automatically adds new events to the calendars. You can set your capacity and allow multiple invitees to schedule the same slot.
What does Calendly not do well? I can't think of anything that they don't do well.
What do you wish you had known about Calendly before using? I wish I had known about them much earlier so that I could have managed my time more efficiently.
Have you used a competitor to Calendly? If so, how does it compare? Yes I have used Appointment Plus. It sends automated emails and text message reminders to your customers. This helps to reduce no-shows for appointments. It provides more than 500 configuration options. It offers multiple customization options.