Yes, both ScheduleOnce and Mailshake offer a Free Trial.
ScheduleOnce is designed for Large Enterprises, Medium Business and Small Business.
Mailshake is designed for Medium Business and Small Business.
Pricing for ScheduleOnce Starts at $10/User/Month when Billed Yearly whereas for Mailshake Starts at $58/User/Month.
Some top alternatives to ScheduleOnce includes Appointy, Acuity Scheduling, Calendly, Scheduly, SnapAppointments, DaySchedule, Appointmind, Web-appointments, i-Scheduling for Appointments and CatchApp Bookings.
Some top alternatives to Mailshake includes Apollo.io, AroundDeal, CrankWheel, ZoomInfo Engage, OutreachCRM, MailChimp, lemlist, OutreachPlus, AutoPitch, Outreach, Use Outreach, Instantly, OutReachly by 500apps and SmartReach.io.