Best Calendar Software in Asia

Proton Mail is the simplest way to protect your communications with built-in end-to-end encryption. Prevent data breaches, stay compliant with regulations like GDPR and HIPAA, and earn client trust. Protected by Swiss privacy laws and trusted by over 50,000 businesses, Proton Mail keeps your business data confidential and under your control. With Proton Mail and Calendar, your team can securely manage their inbox and schedule, while your organization maintains a professional presence with support for custom email domains and personalized branding. And with the Easy Switch tool, migrating from Google or Microsoft is seamless, no IT expertise required.

Spike brings your entire workspace into your Inbox: email, chat, calendar, calls, team collaboration, tasks — to one powerful Inbox. Everything you need to get your work done is in a single feed, so you can finally give the app-switching a rest. Spike’s conversational email fuses traditional email with instant messaging — eliminating cluttered email threads. With real-time conversations and live collaboration, have better interactions and a more human communication experience. Spike is available on iOS, Android, Mac, Windows & Web.

Email, meet AI. Canary can write your emails, prioritize what needs attention, silence spam & much more. Say hello to your Inbox Copilot!

Skiff is a private, end-to-end encrypted workspace with Mail, Calendar, Pages, and Drive products for completely secure communication and collaboration. All Skiff products are designed with security and privacy in mind. All apps are built with end-to-end encryption (E2EE), so you never have to share your personal information, sensitive data, or private keys with anyone else. At all times, only you can access the content of your emails. Generous free tier - Enjoy 10 GB of free storage for your email, attachments, documents, and notes. - Create up to 4 free email aliases to protect your identity. Open-source and audited - Skiff Mail is open-source, uses open-source cryptography, and undergoes external security audits. - You can access our whitepaper and code at skiff.com. No trackers or ads - Sign up and upgrade without sharing any personal information; use crypto payments in many different currencies to upgrade. - Your data is never collected, sold, or shared.

EssentialPIM is the award-winning email client and complete information management solution. It handles all your email messages, appointments, contacts, tasks, notes and password entries with easy-to-use, intuitive tools.

Tuta offers a highly secure, encrypted email, calendar, and contacts service designed to give users complete control over their data. With end-to-end encryption powered by quantum-safe cryptography, Tuta ensures that all your communications are private and safe from surveillance. The platform is easy to use, supports mobile apps for Android and iOS, and is ad-free, offering a seamless experience across multiple devices. Tuta is committed to using renewable energy to power its servers, ensuring privacy while contributing to a greener future.