Yes, both SendGrid and Paragon offer a Free Trial.
SendGrid is designed for Large Enterprises, Medium Business and Small Business.
Paragon is designed for Large Enterprises, Medium Business and Small Business.
Pricing details for both SendGrid and Paragon are unavailable at this time. Contact the respective providers for more information.
Some top alternatives to SendGrid includes SMTP, Campaigner and Moosend.
Some top alternatives to Paragon includes Integrately, hotglue, Netcall Liberty Create, Baton, SaaS Integrator, Qualified, Workvivo, Cloud Rebels, SmartConnect, Integry, viIntegrate and OneSaaS.