Trial software allows the user to evaluate the software for a limited amount of time. Demos are usually not time-limited (like Trial software) but the functionality is limited. In some cases, all the functionality is disabled until the license is purchased. Demoĭemo programs have a limited functionality for free, but charge for an advanced set of features or for the removal of advertisements from the program's interfaces. In some cases, ads may be show to the users. Basically, a product is offered Free to Play (Freemium) and the user can decide if he wants to pay the money (Premium) for additional features, services, virtual or physical goods that expand the functionality of the game. This license is commonly used for video games and it allows users to download and play the game for free. There are many different open source licenses but they all must comply with the Open Source Definition - in brief: the software can be freely used, modified and shared. Programs released under this license can be used at no cost for both personal and commercial purposes. Open Source software is software with source code that anyone can inspect, modify or enhance. Freeware products can be used free of charge for both personal and professional (commercial use).

Use your own domain (ex: )Īlso Available: Download ProtonMail for Macįreeware programs can be downloaded used free of charge and without any time limitations.

Send encrypted messages to external recipients.

ProtonMail's revenue is used to support the following features for the benefit of the ProtonMail user community. Proton Mail is the world's largest secure email service with millions of users, and the service requires extensive infrastructure and expertise to run. You can support the service by upgrading to a paid account. The app is open source and basic accounts are always free. The secure email service is fully integrated with an encrypted calendar, enabling you to keep your events private as well. Proton Calendar and Proton Drive extend privacy to your events and documents.

You can send and receive emails normally. ProtonMail for Windows PC secure email accounts are fully compatible with other email providers. It can be used on any device without software install.

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