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Best Certifient Secure Email Apps

230+ iOS apps curated and reviewed

4.2 avg rating
20 free apps
Updated June 2026

The best certifient secure email apps on iPhone average 4.2★ across 230+ titles — we've ranked them by what real users actually keep on their phones. Updated June 2026.

Top Picks for Certifient Secure Email

Email - Edison Mail#2

Email - Edison Mail by Edison Software Inc.

No more Spam - Inbox Zero
Strong Contender
📊 Productivity
4.5😐(78K ratings)
FreeIn-App Purchases
Email - Edison Mail screenshot 1
Email - Edison Mail screenshot 2
Email - Edison Mail screenshot 3
Email - Edison Mail screenshot 4
Email - Edison Mail screenshot 5
Email - Edison Mail screenshot 6

Manage multiple email accounts in one unified inbox. This app offers fast email fetching, smart search for important information, and tools to reduce inbox clutter. It prioritizes privacy and security with features like sender blocking and biometric protection.

What We Love

  • 🚀 Fast and responsive
  • 👍 Intuitive and user-friendly interface
  • 🔒 Secure with Face ID support
  • 📦 Helpful package tracking and delivery updates

Room to Improve

  • 🐛 Unreliable notifications and email sync issues
  • 🔄 Frequent app crashes and freezes
  • 🔍 Inconsistent search and filtering functionality
Proton Mail - Encrypted Email#3

Proton Mail - Encrypted Email by Proton AG

Fast, private & secure mail
Worth Considering
📊 Productivity
4.7😊(45K ratings)
FreeIn-App Purchases
#64in 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

This encrypted email service from Switzerland prioritizes user privacy with end-to-end encryption. It offers robust security features to protect your communications from phishing, spam, and tracking, allowing you to manage your inbox with ease.

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 Certifient Secure Email apps to explore

4
Citrix Secure Mail
Citrix Secure Mail
Citrix Secure Mail
by Citrix Systems, Inc.
Free

Manage multiple email accounts, calendars, and contacts securely on your mobile device. This robust solution integrates with business tools and offers advanced security features for enterprise or BYOD environments, protecting personal data.

Multiple Exchange account supportPhishing email reportingEmail attachment folder
💼 Business
(5.9K)
free
5
Blue Mail - Email | Calendar
Blue Mail - Email | Calendar
Blue Mail - Email | Calendar
AI-Powered, Fast & Secure
Free

Manage all your email accounts from various providers in one unified, ad-free inbox. This app offers AI-powered writing assistance, an integrated calendar, and advanced spam management for enhanced productivity.

Unified inbox for multiple email accountsAI-powered email writing and summarizationIntegrated calendar with event management
💼 Business
(10K)
free with in-app purchases
6
Tuta: Encrypted Private Email
Tuta: Encrypted Private Email
Tuta: Encrypted Private Email
Secure, Ad Free Mail Client
Free

Secure your communications with an encrypted email service offering end-to-end encryption for emails and contacts. Enjoy features like anonymous registration, an ad-free experience, and a free encrypted calendar. Protect your privacy with a service developed and hosted in Germany.

End-to-end encryptionAnonymous registrationAd-free experience
📊 Productivity
(3.3K)
freemium
7
mail.com - email & cloud
mail.com - email & cloud
mail.com - email & cloud
Mailbox for storage & mail
Free

Manage your emails and cloud storage from a single app. Receive instant notifications for new messages and access your contacts and documents on the go. Secure your account with PIN or biometric authentication.

Unified inbox for all email addresses2GB cloud storagePush notifications
📊 Productivity
(103K)
free with in-app purchases
8
iMailG
iMailG
iMailG
Safe email client for Gmail
Free

iMailG is a secure email client for Gmail with features like Touch/Face ID protection, anti-phishing, and customizable scales for message views. Protect your privacy with strong keychain security and encrypted communication.

🌐 Social Networking
(16)
9
Spike: AI Email & Team Chat
Spike: AI Email & Team Chat
Spike: AI Email & Team Chat
Teamspace & mail for business
Free

This AI-powered app transforms your email into a messenger-like experience for professionals and teams. It streamlines inbox management with smart summaries, AI-assisted replies, and one-tap actions. Collaborate seamlessly with team chat, shared inboxes, and integrated tools.

AI-powered email summariesAI-assisted reply draftingInstant email translation
📊 Productivity
(281)
free with in-app purchases
10
Spark Mail: AI Email Assistant
Spark Mail: AI Email Assistant
Spark Mail: AI Email Assistant
Smart Inbox & Mail Assistant
Free

Streamline your email and calendar management with an AI-powered assistant. Organize multiple accounts, declutter your inbox with smart sorting, and use AI to draft replies, summarize threads, and manage your schedule efficiently.

Unified inbox for multiple email accountsAI-powered email summarization and draftingSmart Inbox for prioritizing emails
📊 Productivity
(82K)
free with in-app purchases
11
Safe Mail for Gmail Free : secure and easy email mobile app with Touch ID to access multiple Gmail and Google Apps inbox accounts
Safe Mail for Gmail Free : secure and easy email mobile app with Touch ID to access multiple Gmail and Google Apps inbox accounts
Safe Mail for Gmail Free : secure and easy email mobile app with Touch ID to access multiple Gmail and Google Apps inbox accounts
by MinhMobileDev
Free

This app provides a secure and user-friendly way to manage multiple Gmail and Google Apps accounts. It offers Touch ID and passcode protection for enhanced privacy, allowing quick access and switching between inboxes without repeated password entry.

Touch ID supportManage multiple Gmail/Google Apps accountsQuick account switching
💼 Business
(96)
free
12
Mail App for Gmail
Mail App for Gmail
Mail App for Gmail
Get Email Done
Free

This app offers a streamlined experience for managing your Gmail inbox, focusing on quick triage and instant message sending/receiving. It boasts a fast, reliable performance, especially on VPNs, and a beautiful, animated interface.

Fast email management toolsMultiple actions for inbox tasksReliable VPN performance
📊 Productivity
(8.1K)
subscription
13
myMail box: email client app
myMail box: email client app
myMail box: email client app
E-mail for Gmail, Hotmail, AOL
Free

Consolidate and manage multiple email accounts from various providers in a single, user-friendly interface. Enjoy customizable notifications, enhanced security features, and efficient search capabilities to streamline your communication.

Unified inbox for multiple email accountsCustomizable push notificationsEmail thread view
📊 Productivity
(17K)
free with in-app purchases
14
HEY Email
HEY Email
HEY Email
Email at its best, by Basecamp
Free

This email client streamlines your inbox with features like call-like screening for senders, grouped message organization, and a unified attachment library. It offers unique ways to read emails, manage receipts, and protect your privacy from trackers.

Screen senders like callsNaturally grouped messagesRead multiple emails at once
📊 Productivity
(4.3K)
subscription
15
Atomic Mail: Private Email
Atomic Mail: Private Email
Atomic Mail: Private Email
Secure & Encrypted Mail
Free

This secure email application prioritizes user privacy with advanced encryption, zero-access architecture, and robust spam protection. It offers a fast, modern client for personal and business use, without trackers, profiling, or data selling.

End-to-end encryptionZero-access protectionAlias support
📊 Productivity
(180)
freemium
16
Fastmail – Email & Calendar
Fastmail – Email & Calendar
Fastmail – Email & Calendar
Privacy-first email with more
Free

Manage your email, contacts, and calendar with a privacy-focused service. Offers powerful search, inbox decluttering tools, and customizable gestures for efficient communication. Seamlessly syncs across devices and supports open standards.

Offline access to emailPowerful search with refinementInbox decluttering tools
📊 Productivity
(563)
freemium
17
Voltage Mail
Voltage Mail
Voltage Mail
Read and send voltage emails
Free

Securely read and compose encrypted emails on your mobile device. This app allows you to send and receive secure messages, integrating with your existing email accounts and offering robust security features for organizations.

Read encrypted emails and attachmentsCompose new secure email messagesSend and receive secure emails
💼 Business
(736)
freemium
18
TypeApp Email, Mail & Exchange
TypeApp Email, Mail & Exchange
TypeApp Email, Mail & Exchange
Upgrade your Email Experience
Free

Manage all your email accounts from a single, customizable app. Enjoy instant smart push notifications, a unified inbox, and intelligent features like email clusters for simplified organization. Protect your inbox with Touch ID and passcode security.

Unified inbox for all email accountsInstant smart push notificationsEmail clusters for organization
📊 Productivity
(908)
free with in-app purchases
19
Proton Pass - Password Manager
Proton Pass - Password Manager
Proton Pass - Password Manager
Secure end-to-end encryption
Free

Securely manage your online credentials with end-to-end encryption. This free password manager offers autofill, 2FA code generation, email alias creation, and data breach monitoring across all your devices. Protect your digital identity with robust Swiss privacy laws.

Autofill loginsStore unlimited passwordsGenerate 2FA codes
📊 Productivity
(1.2K)
free with in-app purchases
20
Egress Secure Mail
Egress Secure Mail
Egress Secure Mail
Integrated data security
Free

Securely send and receive emails on the go with advanced encryption and access control. Protect sensitive data while staying productive, with features like email revocation and audit trails.

Send and receive secure emails on mobileEncrypt and decrypt emailsRevoke access to sent emails
💼 Business
(286)
free with in-app purchases