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Best Kullo – Secure Communication Alternatives for Android

Proton Mail: Encrypted Email

4.5.0 for Android

8.9 49 Reviews

A trusted email app that uses end-to-end encryption and offers advanced security

Download APK (81.6 MB)
InstAddr

2024.10.01.1 for Android

7.1 11 Reviews

The app enables you to create disposable email addresses.

Download XAPK (7.9 MB)
Tuta: Secure & Private Mail

259.241217.0 for Android

9.1 11 Reviews

Encrypted privacy-first email client: ad-free, no tracking, fully anonymous

Download APK (43.1 MB)
Zoho Mail - Email and Calendar

2.7.7 for Android

9.4 3 Reviews

Zoho Mail - Email, Calendar, Contacts and Files on the move!

Download APK (28.2 MB)
Spike - Email & Team Chat

4.1.4.2 for Android

10.0 5 Reviews

Teamspace and email for business: chat, channels, docs, & meetings - with AI

Download XAPK (31.0 MB)
QKSMS

3.9.3 for Android

8.5 8 Reviews

Love texting again. The most beautiful messaging app for Android.

Download XAPK (11.3 MB)
Letstalk IM

2.11.72 for Android

10.0 2 Reviews

Secured Private Communication

Download XAPK (156.1 MB)
ManageEngine MDM

24.12.01 for Android

0 Reviews

Enhance productivity by effectively managing your enterprise's devices and apps.

Download XAPK (19.4 MB)
10 Minute Mail - Temp Mail

2.40 for Android

0 Reviews

Temporary disposable email address for 10 minutes

Download XAPK (44.3 MB)
Fastmail

4.2.0 for Android

0 Reviews

Email and calendar made better. Fast, private hosting for you or your business.

Download XAPK (11.9 MB)
Zoho Cliq - Team Chat

6.08 for Android

10.0 1 Reviews

Beyond a chat app, Cliq lets teams collaborate better for improved productivity.

Download XAPK (231.2 MB)
Criptext Secure Email

0.26.0 for Android

7.8 8 Reviews

Encrypted. Private. Simple.

Download APK (20.4 MB)
MailDroid - Email App

5.22 for Android

6.0 4 Reviews

Need a great working email client? MailDroid is the one you should download!

Download APK (14.2 MB)
Advance SMS

1.1.64 for Android

0 Reviews

Simple and feature rich messaging app for SMS & MMS with privacy protection.

Download XAPK (17.8 MB)
WatchGuard AuthPoint

2.3.0 for Android

0 Reviews

Strong MFA-based user identification in a friendly mobile app.

Download XAPK (51.9 MB)
Authenticator App - OneAuth

3.6.4 for Android

0 Reviews

Enable Two Factor Authentication & secure your online accounts with Zoho OneAuth

Download APK (19.5 MB)
Meshtastic

2.5.15 for Android

0 Reviews

An inexpensive open-source GPS mesh radio for hiking, skiing, flying, marching.

Download XAPK (8.2 MB)
MaaS360 Mail

8.80 for Android

0 Reviews

MaaS360 Mail provides access to your corporate Mail, Calendar and Contacts.

Download XAPK (15.8 MB)
Crait - Secure Communication

1.5.13 for Android

7.0 4 Reviews

Crait is where secure communication and collaboration happens.

Download APK (43.0 MB)
HEY Email

1.27.2 for Android

10.0 1 Reviews

Email, unexpected

Download XAPK (26.6 MB)

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