What each one gives you
| Connector | Once connected |
|---|---|
| Calendar | Showing requests check your real availability, and confirmed showings appear on your calendar. Without it you will double-book. |
| Campaigns and replies send from your own address, and your sending reputation is yours rather than shared. | |
| Marketing and ads | Ad performance and spend read back against the leads they produced, so cost per lead is a real number rather than an estimate. |