GSuite allows you to set up an email at your own domain, access google docs, sheets and drive storage and use the gmail interface to manage your emails online. It's amazingly convenient and beats the hell out of many email providers (we're looking at you outlook). Plus, pricing starts at just $5/month.
Trying to schedule or reschedule meetings via email is what nightmares are made of. Calendly is worth every penny because is allows us to share our calendar with our contacts, let them pick a time that works, and automatically block out that time in Google calendar, so we never double book. Ah-mazing.
Oh how we love Webflow. This allows us to design and develop our websites at the same time, and do it all visually (without messy code). We build our websites in Webflow and we use their beautiful, yet robust content management system to manage our backend. If you have never really liked the messy plugins and backend of WordPress, and Squarespace is too limiting, give Webflow a whirl.