Neither Gmail nor LetMailBox offers a free trial.
Gmail is designed for Large Enterprises, Medium Business and Small Business.
LetMailBox is designed for Medium Business, Small Business and Individuals.
Pricing details for both Gmail and LetMailBox are unavailable at this time. Contact the respective providers for more information.
Some top alternatives to Gmail includes Campaigner, Moosend, SMTP, Omnisend, Constant Contact, MailChimp, Campaign Monitor, GetResponse, Mailjet, weMail, StreamSend, Groupmail, Inbox Mailers, SALESmanago Email Marketing, SendFox and Emaily.
Some top alternatives to LetMailBox includes and undefined.