IMAP
YesPOP3
YesPlatforms
Windows, macOS, LinuxExchange Support
YesSearch
YesMulti-Account
YesThreaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
YESPOP3
YESPlatforms
Windows, MacOSExchange Support
YESSearch
YESMulti-Account
YESThreaded
YESUnified Inbox
YESPGP Encryption support
YESAuto Avatar downloading
YESEnd-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
YesPOP3
YesPlatforms
BSD, Linux, Mac OS, Solaris, Unix, WindowsExchange Support
-Search
YesMulti-Account
YesThreaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
-POP3
-Platforms
-Exchange Support
-Search
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
YesFree tier
YesOpen source
YesWeb interface
YesPublisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
YesPOP3
YesPlatforms
Windows 10/macOS/Linux/Android/iOS/Amazon FireOSExchange Support
YesSearch
YesMulti-Account
YesThreaded
YesUnified Inbox
YesPGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
Blix, Inc.Snooze Emails
YesFile Size
Varies with deviceIn App Purchases
NonePush Notifications
YesMinimum Android Version
4.1Minimum Windows Version
10Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
YesPOP3
YesPlatforms
MacOS, Windows, AndroidExchange Support
YesSearch
YesMulti-Account
YesThreaded
YesUnified Inbox
YesPGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
YesFile Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
YesLockable
YesAccessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
YesPOP3
YesPlatforms
MacOS, WindowsExchange Support
-Search
YesMulti-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
The thin scroll bars with no up / down arrows (in Windows version) means that this application is not accessible to those with Parkinson's disease, MS, cerebral palsy etc. SMTP
YesEmail tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
YESPOP3
YESPlatforms
WindowsExchange Support
YESSearch
YESMulti-Account
YESThreaded
YESUnified Inbox
YESPGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
YESFile Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
YesMacros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
-POP3
-Platforms
-Exchange Support
-Search
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
-POP3
-Platforms
WindowsExchange Support
-Search
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
YesPOP3
YesPlatforms
WindowsExchange Support
YesSearch
YesMulti-Account
YesThreaded
-Unified Inbox
-PGP Encryption support
YesAuto Avatar downloading
-End-to-end encryption
YesFree tier
-Open source
-Web interface
-Publisher
RitlabsSnooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
NoLockable
YesAccessibility Verification
-SMTP
-Email tracking
-Macros
YesQuick Templates
YesMultiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
YesPOP3
YesPlatforms
osExchange Support
NoSearch
YesMulti-Account
YesThreaded
YesUnified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
-POP3
-Platforms
-Exchange Support
-Search
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
-POP3
-Platforms
-Exchange Support
-Search
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
-POP3
-Platforms
-Exchange Support
-Search
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
YESPOP3
YESPlatforms
-Exchange Support
YESSearch
-Multi-Account
-Threaded
-Unified Inbox
NOPGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
YESRequired Android Version
-Lock App
-Single Player
-IMAP
-POP3
-Platforms
-Exchange Support
-Search
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
YesPOP3
YesPlatforms
Android / iOS / BrowserExchange Support
NoSearch
-Multi-Account
NoThreaded
YesUnified Inbox
NoPGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
YahooSnooze Emails
-File Size
Varies with deviceIn App Purchases
NonePush Notifications
YesMinimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
Varies with deviceLock App
NoSingle Player
-IMAP
-POP3
-Platforms
-Exchange Support
-Search
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
YesPOP3
YesPlatforms
MacOS, iOS, AndroidExchange Support
YesSearch
YesMulti-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
NoPOP3
NoPlatforms
Linux, Windows, MacExchange Support
YesSearch
YesMulti-Account
yesThreaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
-POP3
-Platforms
-Exchange Support
-Search
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
-POP3
-Platforms
-Exchange Support
-Search
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
YesPOP3
NoPlatforms
Linux, Mac, WindowsExchange Support
YesSearch
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
YesPOP3
YesPlatforms
-Exchange Support
YesSearch
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
YesIMAP
-POP3
-Platforms
-Exchange Support
-Search
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-IMAP
-POP3
-Platforms
-Exchange Support
-Search
-Multi-Account
-Threaded
-Unified Inbox
-PGP Encryption support
-Auto Avatar downloading
-End-to-end encryption
-Free tier
-Open source
-Web interface
-Publisher
-Snooze Emails
-File Size
-In App Purchases
-Push Notifications
-Minimum Android Version
-Minimum Windows Version
-Free
-Lockable
-Accessibility Verification
-SMTP
-Email tracking
-Macros
-Quick Templates
-Multiple Accounts
-Required Android Version
-Lock App
-Single Player
-