List of the Top 14 Email Encryption Apps for Android in 2025

Proton Mail for Business offers a secure and professional email solution trusted by 50,000 organizations. Built with end-to-end encryption and protected by Swiss privacy laws, Proton Mail ensures your sensitive information is safe from unauthorized access and data leaks. Whether you're a small business or a large organization, you can ensure regulatory compliance, reinforce client trust, and keep your communications safe. Easily migrate your team from Google or Microsoft, use your own email domain for your communications, and manage your schedule with Proton Calendar — all in a user-friendly, privacy-focused platform.

Mailfence is a provider of encrypted email services that employs OpenPGP-based encryption along with digital signatures for enhanced security. It boasts an array of features that facilitate collaboration while ensuring both security and convenience are maintained. Users can securely store and edit documents through Mailfence Document, and sharing these documents with teammates is as simple as a single button press. Additionally, the Mailfence Calendar helps users manage tasks, meetings, events, and other vital information efficiently. The Contacts feature allows for the storage of contact information and the creation of mailing lists, which enhances overall productivity. Designed with full interoperability in mind, Mailfence can be synced seamlessly with various services. Furthermore, it offers fully customizable whitelabel versions of its interface, catering to diverse branding needs. In a commitment to online privacy, Mailfence contributes 15% of its PRO subscription revenue to organizations like IFF or EDRI. This dedication to supporting privacy advocacy is a testament to Mailfence's values.

Spike consolidates your entire workspace into a single Inbox that encompasses email, chat, calendars, calls, team collaboration, and tasks, effectively streamlining your workflow by eliminating the need to toggle between multiple applications. By combining conventional email with instant messaging, Spike's conversational email feature reduces the chaos of lengthy email threads. With real-time communication and live collaboration capabilities, users can enjoy enhanced interactions that foster a more personable communication atmosphere. Available on iOS, Android, Mac, and Windows, Spike ensures that you can stay connected and organized no matter what device you are using. This integration of features is designed to improve productivity and simplify the way you manage your professional communications.

Tuta is an encrypted email platform that prioritizes your privacy, offering secure communication with post-quantum cryptography. The service includes features such as encrypted calendars and contacts, ensuring that all your personal and professional data is protected. Tuta supports mobile apps for iOS and Android, and provides an ad-free, user-friendly experience with customizable options for custom domains. The company focuses on environmental sustainability, using green energy to power all its services while maintaining a zero-knowledge, open-source architecture.

Effortlessly create an endless array of email addresses, each associated with its own list of contacts, all while ensuring the privacy of your actual email account. These addresses can be shared freely, keeping your personal email shielded from telecom companies, governmental agencies, and cybercriminals who might seek to surveil your communications. Each virtual mailbox is equipped with advanced 4096-bit GPG and S/MIME encryption keys and certificates, ensuring that every email stored within MsgSafe-io remains secure and encrypted. You also have the option to tailor the encryption settings for every single contact you engage with. Protect your entire family or organization by managing all identities and email addresses linked to your current domain. If you don't yet own a domain, our domain registration services can help you secure one that integrates effortlessly with MsgSafe-io, complete with essential privacy protections. If you have concerns about the privacy of communication services like FaceTime, Skype, Duo, or Hangouts from major companies like Apple, Microsoft, and Google, consider using our secure and private audio and video communication platforms instead. With these tools, you can invite others to join you through a simple browser link, enhancing both your online security and privacy. This approach not only fortifies your communications but also offers peace of mind in a digital age where privacy is increasingly at risk.

Introducing Canary, your new AI assistant for email management that not only sends your messages but also identifies important ones, filters out spam, and offers a variety of additional features. With Canary, you can enhance your email experience and keep your inbox organized like never before!

Senders maintain complete control by restricting what recipients can do with content, including the ability to print, share, or download, and they can revoke access whenever needed. Identillect remains responsive to regulatory changes through continuous research, allowing you to concentrate on your primary responsibilities. The platform is designed to be easily navigable for both senders and recipients, who do not need to register or subscribe to receive messages. Enhance your secure communications effortlessly through Outlook by utilizing Identillect’s advanced vCard technology. You have the flexibility to set your desired security level and implement company-wide policies that limit recipient permissions across your network, ensuring consistent protection. This add-in simplifies message security and responses while you're on the go, offering all the functionalities of Delivery Trust® – Web Only. Its user-friendly interface guarantees a smooth implementation process across your organization without the burden of a steep learning curve. Additionally, the add-in provides full access to all features of DELIVERY TRUST® – Web Only, thereby guaranteeing extensive security for every communication you send. By leveraging these capabilities, you can confidently safeguard sensitive information and maintain control over your communications at all times.

Posteo is a Berlin-based email service provider that emphasizes sustainability and privacy, providing users with an ad-free, encrypted email experience. Powered entirely by green energy, Posteo costs just €1 per month, offering a full suite of features, including email, calendar synchronization, and address book management, all accessible from various devices. The platform is designed for users who value privacy, as Posteo does not collect personal data or engage in user profiling, and it provides easy-to-use encryption options for all its services. Furthermore, Posteo offers additional privacy features such as encrypted calendars, two-factor authentication, and the ability to encrypt the entire mailbox. Posteo’s commitment to privacy extends beyond email services; they also focus on reducing their environmental footprint by using sustainable resources like Green Planet Energy and operating an environmentally responsible workplace. By rejecting advertisements, user tracking, and the collection of IP addresses, Posteo ensures that customers' information stays private and secure. The company’s business model focuses solely on serving its users without relying on advertisers or investors, making it a trusted provider for those seeking uncompromised privacy. Through a seamless migration process, users can easily move from other email providers while ensuring data stays secure and encrypted during the transfer. Posteo is an ideal solution for privacy-conscious individuals who want an efficient and secure communication platform with a strong commitment to both user privacy and environmental sustainability.

Security professionals have developed an all-in-one platform featuring end-to-end encryption, known as Crypto Suite™, which serves as your sole application for cryptocurrency management. This app stands out as the most secure option available, allowing you to keep all your sensitive and important information in one convenient location, encompassing communications, digital currencies, and private documents. With blockchain integration and robust end-to-end encryption, users maintain total control over their assets. Managing your cryptocurrency is straightforward, making FortKnoxster your ultimate secure solution. Sharing digital currencies and inviting friends to the platform is a seamless process. The wallet provided by FortKnoxster operates on a completely non-custodial basis, meaning only you can access your funds. Neither the platform nor any third parties have access to your assets, as you alone possess the private encryption keys to your money. All of your tokens and coins can be securely stored in a single mobile wallet, with support for numerous blockchains and thousands of different assets. Whether it’s BTC, ETH, FKX, ERC20 or BEP20 tokens, NFT collectibles, or various other digital assets, you can purchase them on your own terms and conditions. By utilizing this comprehensive platform, you can enhance your cryptocurrency experience while ensuring top-notch security and privacy.

A quarter of the leading 100 German firms with the highest revenues opt for Zertificon's solutions. Our Z1 SecureMail Gateway simplifies Enterprise Email Encryption, ensuring secure communication with anyone, anytime. The entire organization can seamlessly encrypt, decrypt, manage, and verify email signatures in the background. Maintenance for the Z1 SecureMail Gateway is minimal, and the user-friendly, browser-based admin interface requires no specialized skills to operate. Automatic key management and centralized enforcement of security policies further enhance its efficiency. Quick and easy integration into either cloud or on-premises email systems means that your business operations remain uninterrupted. There is no need for employee training, and the experience for recipients is smooth and hassle-free. The Z1 SecureMail Gateway allows for centralized customization of encryption, minimizing the risk of human error. With this solution, you can swiftly achieve compliance and ensure the highest security standards. Additionally, you retain ownership of your encryption keys and benefit from German-engineered data sovereignty, free from backdoors, which enhances your organization’s trustworthiness and security posture. This comprehensive approach not only safeguards communications but also empowers your organization to focus on its core activities without security concerns.

While you may think you are being cautious by refraining from sending sensitive emails, isn't it worrisome that your email service provider might have a backdoor allowing them to access your communications? They hold the power to share your messages with third parties whenever they choose, as they establish the protocols and take advantage of any weaknesses in their system. Have you reflected on the information that a single online purchase receipt could expose about your life? Such details could unveil your shopping habits, financial standing, preferred payment methods, home address, and the technology you use, among other insights. This reality is rather alarming, isn't it? Sadly, many businesses and scammers are already taking advantage of this data. Every tiny detail about you is invaluable to outside entities, who will leverage it to gain insights into your habits, sway your buying choices, and in some extreme cases, even impersonate you online. If you are under the impression that your email service is entirely secure, it may be beneficial to perform a quick online search; you'll likely uncover that leading email providers have experienced significant security breaches. Are you still feeling secure about your privacy? Fortunately, a simple and effective privacy solution is available that can protect your emails regardless of where they are sent or received, ultimately providing you with the reassurance you need in today's digital landscape. This peace of mind can help to alleviate the anxiety that comes with sharing your personal information online.

Aspida Mail was created with a focus on user-friendliness, allowing you to continue your daily business activities seamlessly. Its installation is simple and works with any device that has IMAP capabilities. Furthermore, Aspida Mail offers encrypted email services that meet HIPAA compliance standards. This blend of functionalities not only enhances security but also ensures effective communication, making it an excellent option for individuals and organizations in need of reliable email services.

We place a strong emphasis on maintaining user anonymity by not storing personal data, which guarantees that your identity stays private. Our advanced encryption and state-of-the-art technologies safeguard the privacy of your communications effectively. Iceland is known for having some of the most rigorous privacy laws, which support both anonymous usage and the swift deletion of data. The unique 4-Wall Protection system offered by CTemplar ensures that your information is thoroughly secured. To further enhance security, you have the option to set a specific phrase in your account that aids in recognizing and avoiding phishing attempts. Furthermore, we provide anonymous payment solutions via Monero; however, please note that our payment processor for XMR is currently under development, so you will need to contact support for assistance with these transactions. For added convenience, automated payments can also be processed using Bitcoin and credit cards. Our servers are located in Iceland, harnessing the benefits of plentiful renewable energy resources, as we operate exclusively on green energy derived from geothermal and hydropower sources. This dedication to sustainability not only improves our service but also positively impacts the environment, fostering a greener future. Additionally, our commitment to energy efficiency aligns with global efforts to combat climate change, making us a responsible choice for environmentally-conscious users.

CounterMail is an email service designed with a strong emphasis on security while maintaining a user-friendly interface, striving to provide excellent privacy without burdening users with overly complex features. Users can conveniently access their email accounts from anywhere in the world at any time. The service ensures that your account remains both anonymous and consistently encrypted, which greatly enhances confidentiality. CounterMail's encryption operates automatically and effortlessly, so no advanced technical skills are needed on the user's part. If you appreciate the ease of use found in services like Hotmail or Gmail, it's likely you'll also enjoy the intuitive design of CounterMail's secure email platform. It employs a strong encryption method called OpenPGP, featuring 4096-bit encryption keys to protect your data. According to available information, there is currently no known method to breach OpenPGP encryption using cryptographic or computational techniques, which provides users with confidence about the safety of their data. This unwavering dedication to user privacy makes CounterMail an appealing option for those who prioritize safeguarding their online communications and personal information. Additionally, the seamless integration of security features into everyday use sets CounterMail apart in the realm of email services.