But how do you know which is the best?
Excellent Email Encryption: Proton Mail
Send encrypted emails to anyone.
Time-limited messages for sensitive information.

Some features are hidden behind the Pro license.
Storage for the free account is limited to 500MB.
If you deal with sensitive information in your email, then email encryption is a must.

Proton Mail is one of the best-known, and most trustedencrypted email service providers.
The free account allows users to have one email address and send up to 150 encrypted emails per day.
For most users, thats sufficient, but if youre a power user, it might not be enough.

Only users who have the password you provide can open encrypted emails.
Expandable Functionality: Aqua Mail
Easily select multiple emails by swiping down.
Intuitive, easy navigation.

Highly customizable display style for messages.
Many features are gated behind a Pro license.
Aqua Mail is also easy to setup and is customizable, so users can make it their own.

Aqua Mail integrates with numerous third-party add-ons, to extend the usability and functionality of the email service.
Additional features include:
Super Strong Encryption: Tuta
Encryption automatically enabled.
Unencrypted emails stored encrypted on servers.

Even attachments encrypted unless disabled.
Cannot attach files in bulk.
Does not sync with other mail services.

Some features are hidden behind a license fee.
Tuta is another encrypted email service.
Unlike other mail providers, Tuta requires users to create a strong password for complete the account setup.
The free account includes 1GB of storage (not expandable) and allows one user for the account.
Free account users also have limited search capabilities.
The well-designed interface is easy to navigate.
Intelligent Counter shows all or new unread emails.
Mark Read or delete items without opening app.
The app can be buggy, especially after an update.
Blue Mail is a free, well-designed email app that offers tons of great features.
It also offers support for IMAP, POP3, and Exchange, and autoconfiguration.
Setting up an account in Blue Mail is super simple.
In our test, it took three taps to set up a Gmail account.
Blue Mail also offers support for multiple email accounts.
Best for Multiple Email Accounts: All Email Access
Can access multiple mail services from one app.
Access to email providers not available elsewhere.
Smart Caller ID nice add-on that works in real-time.
Not easy to select an All Email Access account.
The user interface is a little clunky.
Includes Calendar, Contacts, Tasks, and Notes.
Automatic syncing hiccups when roaming.
Time function limited after free trial.
Its just simple, easy to use email.
Built for Android: Gmail
Import mail, send from other addresses.
Undo feature to unsend emails.
An excellent spam filter.
Some privacy concerns over Google information collection.
Gmail is the the most frequently used email app with Android devices, and for good reason.
Gmail works beautifully with Android, and its completely free.