

Most versions are BOTH cloud based or desktop based (but some of the subscriptions are only cloud based). Microsoft 365 is a subscription based program (monthly or annual fee) that they update it to the newest version every 2 or 3 years. Is there another version of Outlook for desktop? In summary, I don't believe there is a true contender to Outlook when it comes to functionality and calendar integration but there are others that come close except those would generally require a bit more work for configuration and MS 365 a web based email? Encryro touts itself as a viable addin for encryption but I don't know about how secure the app is and you'd want to do a bit more research on that. This functionality is available natively in MS 365 but not G-Suite. I would also consider the availability of end-to-end encryption for emails to external recipients, not by PGP, which is too technical for customers who are novices to use, but through the provider's web-based portal. Thunderbird has extensions for that but flexibility of modulation also is the biggest shortcoming - Thunderbird has a history of updating the software ahead of the extensions being ready and that causes extensions to fail (at least for a time) until those extensions are subsequently updated (although may some actually be abandoned by developers). To access Google calendar, whatever email client you use will need to have an API. This article may give you a high-level idea about the different alternatives: Ĭalendar is a slightly different animal. There are both open and closed source paid and free email clients out there. That’s because this email service doesn’t integrate with third-party email clients (IMAP/SMTP) due to its unique design, which prioritizes security over interoperability.You can use any IMAP/POP email client with G-Suite. It’s also the only way how to comfortably access ProtonMail apart from ProtonMail’s web app. The app has been designed from the ground up to provide maximum privacy and security when reading, composing, and managing email messages on the go. ProtonMail offers a highly rated app for Android and iOS. Even if you don’t speak the language of technology, you’ll be able to use ProtonMail and reclaim your personal information. Unlike many other encrypted email services, ProtonMail is surprisingly easy to use and optimized for productivity. ProtonMail is based and incorporated in Switzerland, a country with strong privacy laws, and its code is open source and publicly available. Launched in 2014 at the CERN research facility by Andy Yen, Jason Stockman and Wei Sun, ProtonMail is a privacy- and security- conscientious email service that uses client-side encryption to protect email contents and user data before they are sent.
