Yes, both Mailjet and Support.cc by 500apps offer a Free Trial.
Mailjet is designed for Large Enterprises, Medium Business and Small Business.
Support.cc by 500apps is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Support.cc by 500apps begins at $9.99/Month when Billed Yearly, while pricing details for Mailjet are unavailable.
Some top alternatives to Mailjet includes Campaigner, Moosend and SMTP.
Some top alternatives to Support.cc by 500apps includes Zendesk Support, Zoho Desk, Tidio Helpdesk, Freshservice, ManageEngine ServiceDesk Plus, Freshdesk, Deskero, Teamwork Desk, HelpDesk, SysAid, Jitbit Helpdesk, Snappy, CRMdesk, ReadyDesk, LabiDesk, HESK and BoldDesk.