RonFax

RonFax is a web service for sending faxes from a computer or phone. You enter the destination fax number, upload a PDF, pay once and the service transmits it, with no fax machine, phone line or store visit needed. It is aimed at people who only fax occasionally, for example government, insurance, healthcare or credit-bureau paperwork.

Sending works from the browser without creating an account, and a beta email-to-fax route lets you attach a PDF to a message addressed to the service with the number in the subject line. Pricing is pay-as-you-go instead of a subscription. The site describes TLS encryption in transit, AES-256 protection while a file is processed, Stripe checkout and automatic deletion of uploaded files once a fax is delivered or fails, and it warns against using the email route for protected health information.

The site also lists frequently searched fax destinations such as tax and government offices, and presents itself as an alternative to FaxZero and Cocofax. It is a hosted commercial service aimed at the US market.