Yes, both SendGrid and CapSumo offer a Free Trial.
SendGrid is designed for Large Enterprises, Medium Business and Small Business.
CapSumo is designed for Large Enterprises, Medium Business and Small Business.
The starting price of CapSumo begins at $20/Month when Billed Yearly, while pricing details for SendGrid are unavailable.
Some top alternatives to SendGrid includes SMTP, Campaigner and Moosend.
Some top alternatives to CapSumo includes Leadfeeder, LeadFuze, Lead Forensics, Leadforms, LeadGen App, Leadinfo, Conversion Blitz, Dynamic Leads, Lead Revealer, Websitez and Leadformly.