Groupmail offers Free Trial, but Letterfuel does not.
Letterfuel is designed for Freelancers, Medium Business and Small Business.
Groupmail is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Letterfuel begins at $19/Month, while pricing details for Groupmail are unavailable.
Some top alternatives to Letterfuel includes Campaigner, Moosend, SMTP, Omnisend, Constant Contact, GetResponse, Sendicate, Groupmail, Inbox Mailers, SendFox, Speedy Newsletter, SpeedyNewsletter, NoCodeLetters, Newsletter to Kindle, Emaily and Relike.email.
Some top alternatives to Groupmail includes Campaigner, Moosend and SMTP.