Help with customer email management (contact, track, set appointment)

What we do We have a peer to peer app which allows residents & businesses to rent out underutilized parking spaces to drivers in need. [login to view URL] Where we are at -Prototype MVP is done -Currently finishing up a few things before releasing our beta app to our signup list consisting of space owners, drivers, and property managers - You can see how our app works by watching this YouTube link below on "how to list your space" [login to view URL] What we need -we have an email list made of space owners, drivers, and a few property managers our problem right now is managing the email list to contact, track, and schedule interviews with our email list in an organized manner. We want to be able to send out personalized mass emails not a general email. For example insert each persons name in the mass email. We tried mail chimp but its not that good ends up in the spam folder, google has an app called mix match we considering but it is a little pricey , Google also has mail merge we are also looking to but don't have the experience to set this all up and organize it. Currently when someone signs up on our website it goes into the mailchimp account, since we dont want to use mailchimp we have to manually copy and paste the signup into a google spreadsheet which is not convenient . We would also like to segment our signups for example only email the drivers or only space owners etc.