All ProtonMail accounts start on the Free plan by default. This plan provides email accounts with 500 MB of encrypted storage. Unlike other free email services, ProtonMail does not harvest user data to generate revenue by showing advertisements. Instead, we offer premium plans, which provide additional features, including increased storage capacity.
You can find your existing storage allotment along with your current storage usage in the lower left corner of your Mailbox while logged in at mail.protonmail.com or in your Settings in the iOS and Android apps.
ProtonMail offers three premium plans: Plus, Professional, and Visionary. This article focuses on storage allocation among each of these plans. To read a full description of each of the plans, see our article on paid plans.
With ProtonMail Plus, you will receive 5 GB of storage. You can increase this amount by selecting the drop down and selecting the desired storage amount. As you change the storage capacity, you will see the pricing change to reflect the increased/decreased storage capacity.
ProtonMail Professional is designed for organizations and gives administrators the ability to allocate different amounts of storage among their sub-users. Professional plans provide 5 GB of storage per user. For example, if there are five people in your company, you will receive 25 GB of storage. You could then distribute 1 GB each to three of the employees and 11 GB each to the other two. Learn more about ProtonMail Professional plans here.
The ProtonMail Visionary plan offers 20 GB of storage. (If you require more than 20 GB of storage, please contact us.)