We provide privacy to everyone, which is why we offer a free plan. However, without paid features and paid services, the free version of ProtonMail would not be

We provide privacy to everyone, which is why we offer a free plan. However, without paid features and paid services, the free version of ProtonMail would not be able to exist. Unlike adtech companies which spy on you and can hand your data to third parties (like advertisers), ProtonMail can't access your data and doesn't make money from ads. Therefore, paid features are necessary for us to put your privacy first while still offering a free plan. With regards to IMAP, we offer Proton Bridge, which enables the integration of your ProtonMail account with email clients such as Outlook, Thunderbird and Apple Mail.