InboxPro offers Free Trial, but Drag does not.
Drag is designed for Freelancers, Medium Business and Small Business.
InboxPro is designed for Large Enterprises, Medium Business and Small Business.
Pricing for Drag Starts at $8/User/Month when Billed Yearly whereas for InboxPro Starts at $7.49/User/Month when Billed Yearly.
Some top alternatives to Drag includes CollaborateCloud, ClickUp, Collabee, Gmelius, Google Workspace, Atomicly, Qualified, Taskbox, Zapmail, Workvivo, InboxPro and Airstack.
Some top alternatives to InboxPro includes GMass, AutoPitch, SmartWriter, Mixmax, Ghostwrite, Qualified, SmartReach.io, Workvivo, Sigmail, IFTTT and Consider.