Yes, both InboxPro and Apollo.io offer a Free Trial.
InboxPro is designed for Large Enterprises, Medium Business and Small Business.
Apollo.io is designed for Large Enterprises, Medium Business and Small Business.
Pricing for InboxPro Starts at $7.49/User/Month when Billed Yearly whereas for Apollo.io Starts at $15/User/Month when Billed Yearly.
Some top alternatives to InboxPro includes Apollo.io, AroundDeal, CrankWheel, ZoomInfo Engage, GMass, AutoPitch, SmartWriter, Mixmax, Ghostwrite, Qualified, SmartReach.io, Workvivo, Sigmail, IFTTT and Consider.
Some top alternatives to Apollo.io includes AroundDeal, CrankWheel, ZoomInfo Engage, Outreach, Adapt Engage, LinkedIn Sales Navigator, Lusha, Seamless.AI, Use Outreach, OutReachly by 500apps, ZoomInfo and Closely.