Yes, both SendGrid and YesInsights offer a Free Trial.
SendGrid is designed for Large Enterprises, Medium Business and Small Business.
YesInsights is designed for Large Enterprises, Medium Business and Small Business.
The starting price of YesInsights begins at $20/Month, while pricing details for SendGrid are unavailable.
Some top alternatives to SendGrid includes SMTP, Campaigner and Moosend.
Some top alternatives to YesInsights includes Zonka Feedback, FeedbackLink, Promoter Ninja, GrowthScore, Thermostat, UserSpeaks, HockeyStack Surveys, Liveform, SatisMeter and SmileBack.