The Best Mailvelope Alternatives for Secure Encrypted Email
Mailvelope is a widely used browser extension that facilitates the exchange of encrypted emails using the OpenPGP standard. It seamlessly integrates into popular webmail interfaces like Gmail, GMX, Outlook.com, and Yahoo! Mail, offering an unintrusive and easy-to-use solution for secure communication. However, for various reasons – perhaps you're seeking more features, a different platform, or a completely integrated email service – you might be looking for a robust Mailvelope alternative. This article explores some of the top options available to ensure your email communications remain private and secure.
Top Mailvelope Alternatives
Whether you prioritize end-to-end encryption, multi-platform support, or integrated productivity tools, there's a Mailvelope alternative out there for you. Let's dive into some of the best:

Tutanota
Tutanota is a highly regarded free and open-source web-mail client known for its strong focus on privacy and security, making it an excellent Mailvelope alternative. It offers end-to-end encryption for emails and comes with open-source iOS and Android apps, including availability on F-Droid. Key features include a custom domain option, night mode, an encrypted calendar, and integrated file sharing, all within a clean, privacy-protected design. It supports multiple accounts and is web-based, providing a comprehensive secure email solution.

Enigmail
Enigmail serves as a security extension specifically for Mozilla Thunderbird and SeaMonkey, making it a direct Mailvelope alternative for desktop email clients. It is free and open-source, supporting Mac, Windows, and Linux operating systems, and leverages GnuPG for encrypted email. If you prefer to manage your emails through a dedicated desktop application and desire PGP encryption capabilities, Enigmail provides robust encrypted email functionality.

mailbox.org
mailbox.org offers a secure, commercial web-based email account solution ideal for both personal and business use, functioning as a complete Mailvelope alternative. It emphasizes security and privacy, featuring built-in calendar (CalDAV), contacts (CardDAV), custom domain support, and GPG/PGP encryption. Additional features include support for IMAP, self-destructing messages, XMPP support, and two-factor authentication, providing a comprehensive and secure email experience.

Vivaldi Mail
Vivaldi Mail provides a free, ad-free email service that can serve as a suitable Mailvelope alternative, especially for users who appreciate an integrated browsing and email experience. It is a web-based service that includes contacts and calendar features. Key functionalities include support for IMAP and POP3, encrypted email, mail filtering, and PGP encryption, offering a solid and private email solution.

MsgSafe.io
MsgSafe.io delivers private, encrypted online communication with multiple layers of security, making it a strong Mailvelope alternative. This freemium, web-based service also has Android and iPhone apps and supports S/MIME and OpenPGP. Its features include end-to-end encryption, video conferencing, encrypted email and chat, integrated spam protection, and a focus on anonymity and privacy.

Kolab Now
Kolab Now offers a comprehensive suite of intuitive, open-source apps in a user-friendly environment, focusing on secure communication. This commercial, web-based SaaS solution (with DAVdroid support) is a strong Mailvelope alternative for those seeking an all-in-one productivity platform. Features include CalDAV, CardDAV, cloud storage, an email server, notetaking, and real-time collaboration, all with an emphasis on security and privacy.

Bridge
Bridge is a commercial application developed by ProtonMail for Mac, Windows, and Linux, allowing users to integrate their encrypted ProtonMail accounts with local email clients. While not a direct webmail extension like Mailvelope, it serves as a powerful Mailvelope alternative by bringing ProtonMail's end-to-end encryption and PGP encryption capabilities to your preferred desktop client, ensuring secure email management offline.

ElectronMail
ElectronMail is a free and open-source unofficial desktop application for ProtonMail and Tutanota, two leading end-to-end encrypted email providers. Available for Mac, Windows, and Linux, and built on Electron, this ad-free application provides a dedicated desktop experience for accessing these secure services. It's an excellent Mailvelope alternative for users who prefer a native desktop client for their encrypted email.

FlowCrypt
FlowCrypt (formerly CryptUp) offers the easiest PGP encryption for Gmail, behaving like standard email but with added encryption. As a freemium Mailvelope alternative, it's available as browser extensions for Chrome and Firefox (supporting Mac, Windows, Linux, Web, Android, and Chrome OS). Features include Google Chrome Extensions, Firefox Extensions, encrypted email, end-to-end encryption, Gmail integration, and public key encryption, making secure Gmail communication simple.

CTemplar
CTemplar positions itself as one of the world's most secure encrypted email programs, making it a robust Mailvelope alternative. This freemium, open-source service is web-based with Android, iPhone, Android Tablet, iPad, and F-Droid apps. Its security lies in advanced encryption and a unique structure, offering features like a deadman timer and a strong focus on privacy and security, ensuring your communications are highly protected.
The landscape of secure email solutions is rich and diverse. While Mailvelope offers excellent browser-based OpenPGP encryption, these alternatives provide a range of features, platforms, and integration levels to suit different user needs. We encourage you to explore these options and select the Mailvelope alternative that best aligns with your personal or professional security requirements and workflow preferences.