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Best Voltage Secure Mail Apps

210+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated May 2026

Whether you're new to voltage secure mail or looking for an upgrade, our curated collection of 210+ iOS apps has something for everyone. Each app is reviewed and rated by real users, helping you make an informed decision.

Top Picks for Voltage Secure Mail

Voltage Mail#1

Voltage Mail by Open Text Corporation

Read and send voltage emails
Editor's Choice
💼 Business
1.7😞(736 ratings)
Free
Voltage Mail screenshot 1
Voltage Mail screenshot 2
Voltage Mail screenshot 3
Voltage Mail screenshot 4
Voltage Mail screenshot 5
Voltage Mail screenshot 6

Access encrypted emails easily with the Voltage Mail app, designed for users of Voltage SecureMail. Read, compose, and send secure emails with this mobile application, which integrates seamlessly with various devices and email systems for efficient communication.

What We Love

  • 💡 Simple and effective email encryption
  • 👍 Works well for external and internal users
  • 👍 Easy to set up and use

Room to Improve

  • 🐛 Doesn't work on iPhone or iPad
  • 🐛 Crashes frequently
  • 🐛 Confusing and unintuitive user experience
Mail#2

Mail by Apple Inc.

Strong Contender
📊 Productivity
4.7😐(4M ratings)
Free
Mail screenshot 1
Mail screenshot 2
Mail screenshot 3

Access and manage emails from multiple accounts in one place with features like scheduling emails, setting reminders, and using Mail Privacy Protection for enhanced security. Streamline your email management and communication effortlessly.

What We Love

  • 🚀 Efficient email management
  • 🔒 Secure and private
  • 👍 Simple and intuitive interface
  • 💡 Useful categorization of emails

Room to Improve

  • 🐛 Inconsistent swipe gestures
  • 🐛 Unreliable search function
  • 🐛 Emails disappearing or not syncing properly
Proton Mail - Encrypted Email#3

Proton Mail - Encrypted Email by Proton AG

Fast, private & secure mail
Worth Considering
📊 Productivity
4.7😊(44K ratings)
FreeIn-App Purchases
#74in Productivity
Proton Mail - Encrypted Email screenshot 1
Proton Mail - Encrypted Email screenshot 2
Proton Mail - Encrypted Email screenshot 3
Proton Mail - Encrypted Email screenshot 4
Proton Mail - Encrypted Email screenshot 5
Proton Mail - Encrypted Email screenshot 6

A secure email platform that prioritizes user privacy and data protection through encryption features. Send and receive private emails with confidence.

What We Love

  • 🚀 Smooth performance
  • 🔒 Excellent security and privacy
  • 👍 Clean and intuitive interface
  • 💡 Expanding ecosystem of Proton services

Room to Improve

  • 🐛 Occasional crashes and bugs
  • ⏱️ Slow email loading times
  • 📝 Lacking advanced email management features

More Voltage Secure Mail apps to explore

4
Email - Edison Mail
Email - Edison Mail
Email - Edison Mail
No more Spam - Inbox Zero
Free

A fast and secure email application with advanced features for efficient organization and management of emails. Take control of your inbox with Edison Mail.

📊 Productivity
(2.5K)
5
Citrix Secure Mail
Citrix Secure Mail
Citrix Secure Mail
by Citrix Systems, Inc.
Free

Citrix Secure Mail is a robust email solution for managing multiple accounts, calendars, and contacts securely on the go. It seamlessly integrates with other Citrix apps and allows for customization while ensuring data protection. Contact us at xenmobile2@citrix.com for feedback or feature requests.

💼 Business
(5.9K)
6
Tuta: Encrypted Private Email
Tuta: Encrypted Private Email
Tuta: Encrypted Private Email
Secure, Ad Free Mail Client
Free

Stay in control of your private data with a secure email and calendar app that prioritizes encryption and privacy. Experience top-notch security features while communicating and organizing your schedule worry-free.

📊 Productivity
(3.2K)
7
SecureSafe Password Manager
SecureSafe Password Manager
SecureSafe Password Manager
Password Generator & Autofill
Free

SecureSafe Password Manager is a comprehensive tool that securely stores sensitive information and generates strong passwords. Keep your data safe and accessible with this user-friendly application.

📊 Productivity
(19K)
8
Mail: Email, Cloud, Calendar
Mail: Email, Cloud, Calendar
Mail: Email, Cloud, Calendar
Tackle your inbox email!
Free

An efficient and versatile mail app for iPhone, iPad, and iPod Touch supporting various email services with features like multiple account support, full synchronization, personalized spam filter, push notifications, mail caching, contact integration, and quick actions. Stay connected and organized with this user-friendly email application.

📊 Productivity
(1.9K)
9
mail.com - email & cloud
mail.com - email & cloud
mail.com - email & cloud
Mailbox for storage & mail
Free

Get a robust and user-friendly free email service that offers secure communication and convenient inbox management. Join now to experience seamless emailing with innovative features like spam filtering and customizable settings.

📊 Productivity
(103K)
10
myMail box: email client app
myMail box: email client app
myMail box: email client app
E-mail for Gmail, Hotmail, AOL
Free

Access all your email accounts in one place with our email client app. Enjoy features like push notifications, personalized inboxes, efficient search options, enhanced security, and quick contact suggestions. Download now for a seamless email management experience!

📊 Productivity
(17K)
11
Zoho Mail - Email and Calendar
Zoho Mail - Email and Calendar
Zoho Mail - Email and Calendar
More than just an inbox
Free

A feature-packed email application with integrated calendar and contacts, supporting multiple accounts and offering advanced features like Streams, quick swipe actions, and offline email composition. Subscribe for monthly or yearly plans for extended storage and attachment limits within the app.

📊 Productivity
(8K)
12
Infomaniak Mail
Infomaniak Mail
Infomaniak Mail
by Infomaniak Network SA
Free

Manage your email addresses hosted by Infomaniak securely with the Infomaniak Mail app. Create free addresses with 20 GB storage, send and receive emails, organize messages, and personalize your experience. Stay in control of your data in a secure ecosystem developed by Infomaniak, a trusted cloud service provider with a commitment to privacy and sustainability.

📊 Productivity
(5.1K)
13
KeeperChat Encrypted Messenger
KeeperChat Encrypted Messenger
KeeperChat Encrypted Messenger
Private Secure Text Messaging
Free

Introducing a leading secure messaging app with features like private vault for messages, self-destruct protection, and end-to-end encryption. Take control of your messages and share with peace of mind. Experience the future of secure messaging now.

🌐 Social Networking
(380)
14
GMX - Mail & Cloud
GMX - Mail & Cloud
GMX - Mail & Cloud
Reliable and safe
Free

Access your emails easily with this all-in-one email application that offers a user-friendly interface, efficient organization tools, and seamless communication features. Simplify your email experience today!

📊 Productivity
(17K)
15
Yandex Mail
Yandex Mail
Yandex Mail
Smart, fast and secure inbox
Free

A versatile email app offering secure communication with virus protection, spam blocking, built-in translator, and offline capabilities. Manage multiple email accounts, scan documents, organize video meetings, and enjoy exclusive address options. Stay organized with backups and 5GB of free storage on Yandex Disk. Secure and reliable communication alternative to mainstream email services. Explore the app now!

📊 Productivity
(11K)
16
Blue Mail - Email | Calendar
Blue Mail - Email | Calendar
Blue Mail - Email | Calendar
AI-Powered, Fast & Secure
Free

A powerful email and calendar app powered by AI for quick and efficient organization of your communication and schedule. Stay on top of your emails and appointments effortlessly. Experience advanced features seamlessly integrated for improved productivity.

💼 Business
(10K)
17
WEB.DE - Mail, Cloud & News
WEB.DE - Mail, Cloud & News
WEB.DE - Mail, Cloud & News
Secure. Simple. Informative.
Free

A robust email application that offers secure and user-friendly email management, including features like customizable folders, filters, and quick search functions. Accessible on both desktop and mobile devices for convenient emailing on the go.

📊 Productivity
(1.8K)
18
Temp Mail by temp-mail.io
Temp Mail by temp-mail.io
Temp Mail by temp-mail.io
Forget about spam
Free
📊 Productivity
(148)
19
Canary Mail – AI Email
Canary Mail – AI Email
Canary Mail – AI Email
Read Receipts, Unified Inbox
Free

Canary Mail is your essential AI-powered email companion, ensuring intelligent organization and communication efficiency. Take charge of your inbox with advanced features and personalized tools to streamline your email experience.

📊 Productivity
(8.6K)
20
AltaMail
AltaMail
AltaMail
Email rules + Eliminate spam
Free

An advanced email management app with powerful spam detection, customizable rules, quick swipe actions, inbox organization, and offline email backup. Simplify your email workflow and stay focused with AltaMail!

💼 Business
(370)

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