Neither Gmail nor Inbox Mailers offers a free trial.
Gmail is designed for Large Enterprises, Medium Business and Small Business.
Inbox Mailers is designed for Individuals, Medium Business and Small Business.
Pricing details for both Gmail and Inbox Mailers 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 Inbox Mailers includes Campaigner, Moosend and SMTP.