Yes, both LiveAgent and Mailshake offer a Free Trial.
LiveAgent is designed for Freelancers, Large Enterprises, Medium Business and Small Business.
Mailshake is designed for Medium Business and Small Business.
Pricing for LiveAgent Starts at $15/User/Month whereas for Mailshake Starts at $58/User/Month.
Some top alternatives to LiveAgent includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, ManageEngine ServiceDesk Plus, Freshdesk, ClickDesk, HelpDesk, SysAid, Jitbit Helpdesk, Desky, Help Scout, LabiDesk, LiveChat, Zendesk Chat, LiveHelpNow and Little SaaS Communication.
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.