Unibox Alternatives for Windows

Unibox is not available for Windows but there are plenty of alternatives that runs on Windows with similar functionality. The best Windows alternative is Thunderbird, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 25 alternatives to Unibox and 11 are available for Windows so hopefully you can find a suitable replacement. Other interesting Windows alternatives to Unibox are Spark Mail, Postbox, Spike and Canary Mail.

Unibox alternatives are mainly Email Clients but may also be Calendar Apps or Group Chat Apps. Filter by these if you want a narrower list of alternatives or looking for a specific functionality of Unibox.

Unibox

Paid • Proprietary
Email Client

Unibox is a people centric email client that organizes your messages by person. It avoids having email like a to-do list.

More about Unibox

Unibox alternatives page was last updated

Thunderbird
Is this is a good alternative?
Yes
No
Free • Open Source
Email Client
Calendar App
Mac
Windows
Linux
BSD
AppImageHub
Snapcraft
Flathub
PortableApps.com
Haiku
Homebrew
Chocolatey
94 Thunderbird alternatives
Thunderbird is a free, open source, cross-platform e-mail, news and instant messaging client. The project strategy is modeled after Mozilla Firefox.
- - Thunderbird is the most popular Windows, Mac & Linux alternative to Unibox.
- - Thunderbird is the most popular Open Source & free alternative to Unibox.
Suggest and vote on features
Thunderbird Features
1. Extensible by Plugins/ExtensionsThunderbird can be extended with add-ons, plugins and extensions.
2. Multiple Account supportThunderbird support multiple accounts without the need to logout and login
3. Calendar IntegrationThunderbird lets you sync your tasks and events with your calendar application.
4. Email OrganizerThunderbird allows you to take control of your inbox by filtering and control tools.
5. Dark ModeThunderbird supports dark mode for comfortable usage in low light conditions.
6. OpenPGPThunderbird supports OpenPGP, a standard of PGP encryption that is open-source for public use.
7. PortableThunderbird can be used from a USB stick or similar with no prior installation.
8. GPG EncryptionThunderbird supports GPG (aka GnuPG) for encryption of things like emails, messages, files, etc.
9. Works OfflineThunderbird can be used without the need to connect to the internet.
IMAP Support
SMTP Support
FOSS
Add-ons
Built-in RSS reader
POP3 Support
Graphical User Interface
Intuitive
Customizable
Integrated Web Browser
Spark Mail
Is this is a good alternative?
Yes
No
Freemium • Proprietary
Email Client
Calendar App
Mac
Windows
Android
iPhone
iPad
Apple Watch
59 Spark Mail alternatives
E-mail app with all the great features: swipes (long/short), snooze, add (multiple) attachments from the cloud, support for various e-mail services and more.
- - Spark Mail is the most popular Android, iPhone & iPad alternative to Unibox.
Suggest and vote on features
Spark Mail Features
1. Multiple Account supportSpark Mail support multiple accounts without the need to logout and login
2. Email SchedulingYou can schedule a marketing, sales, or personal email for a time in the future with Spark Mail.
3. Cloud SyncSync your data (notes, documents, bookmarks, etc.) across your different devices and to the cloud.
4. Dark ModeSpark Mail supports dark mode for comfortable usage in low light conditions.
5. Calendar IntegrationSpark Mail lets you sync your tasks and events with your calendar application.
6. Email OrganizerSpark Mail allows you to take control of your inbox by filtering and control tools.
7. Works OfflineSpark Mail can be used without the need to connect to the internet.
8. Unified inboxView e-mails (or similar) from all accounts in one unified view with Spark Mail.
9. Ad-freeSpark Mail doesn't contain any form of external advertising.
Snooze Mail
Sorting by folder
Mail Filtering
Calendar View
Sync with Google Calendar
Exchange
AI-Powered
Postpone email reception
Postbox
Is this is a good alternative?
Yes
No
Paid • Proprietary
Email Client
Mac
Windows
69 Postbox alternatives
Postbox is an email application that helps you organize your work life and get stuff done.
- - Postbox is the most popular commercial alternative to Unibox.
Suggest and vote on features
Postbox Features
1. Multiple Account supportPostbox support multiple accounts without the need to logout and login
2. Extensible by Plugins/ExtensionsPostbox can be extended with add-ons, plugins and extensions.
Exchange
Box.com integration
Tabbed interface
Dropbox integration
IMAP Support
Built-in RSS reader
S/MIME Support
Multiple languages
Onedrive integration
Visual Programming
Spike
Is this is a good alternative?
Yes
No
Freemium • Proprietary
Email Client
Group Chat App
Team Collaboration Tool
Mac
Windows
Online
Android
iPhone
Chrome OS
Android Tablet
iPad
Software as a Service (SaaS)
Oculus Rift
63 Spike alternatives
Bring your workspace together into one unified app. It’s everything your team has been looking for in a productivity and messaging app, but easier, and all with your email. Welcome to the shortest path to done.
- - Spike is the most popular Web-based, Android Tablet & SaaS alternative to Unibox.
Suggest and vote on features
Spike Features
1. Unified inboxView e-mails (or similar) from all accounts in one unified view with Spike.
2. Dark ModeSpike supports dark mode for comfortable usage in low light conditions.
3. Email OrganizerSpike allows you to take control of your inbox by filtering and control tools.
4. Cloud SyncSync your data (notes, documents, bookmarks, etc.) across your different devices and to the cloud.
5. Multiple Account supportSpike support multiple accounts without the need to logout and login
6. RemindersSpike allows you to set reminders for tasks, events or actions, based on parameters of time, place or condition.
7. Real time collaborationMultiple users can work together in Spike simultaneously.
8. Live PreviewInstantly see what your files and documents look like as you create them.
Built-in File Manager
Send later
Read confirmation
Snooze reliability
Web-Based
Tagging
Undo send
Priority Inbox
Threaded Conversations
Bulk actions
Canary Mail
Is this is a good alternative?
Yes
No
Freemium • Proprietary
Email Client
Calendar App
Mac
Windows
Android
iPhone
Android Tablet
iPad
Apple Watch
63 Canary Mail alternatives
Email, meet AI. Canary can write your emails, prioritize what needs attention, silence spam & much more. Say hello to your Inbox Copilot!
Suggest and vote on features
Canary Mail Features
1. End-to-End EncryptionCanary Mail has E2E Encryption, for entire or parts of the app.
2. Unified inboxView e-mails (or similar) from all accounts in one unified view with Canary Mail.
3. Multiple Account supportCanary Mail support multiple accounts without the need to logout and login
4. PGP EncryptionCanary Mail supports PGP, an encryption system used for sending encrypted emails and files.
5. No TrackingCanary Mail will not track you or use your personal data.
6. Dark ModeCanary Mail supports dark mode for comfortable usage in low light conditions.
7. Two-factor AuthenticationCanary Mail supports two-factor authentication (2FA).
8. Email OrganizerCanary Mail allows you to take control of your inbox by filtering and control tools.
9. Ad-freeCanary Mail doesn't contain any form of external advertising.
AI-Powered
Email tracking
Snooze Mail
Reminders
Email reminder
Gmail
Email template editor
Read receipts
Calendar Integration
Spam Filter
LucaMail
Is this is a good alternative?
Yes
No
Free • Open Source
Email Client
Mac
Windows
Linux
75 LucaMail alternatives
LucaMail is an open source, cross-platform email client. LucaMail is developed to provide cross-platform alternative to Email Clients that are really exists. LucaMail focuses on modern technologies as well as maintaining a user-friendly UI.
Suggest and vote on features
LucaMail Features
1. Dark ModeLucaMail supports dark mode for comfortable usage in low light conditions.
IMAP Support
Discontinued
Repository marked as archived as of Dec 24, 2022. No new releases since May 26, 2022.
TypeApp
Is this is a good alternative?
Yes
No
Free Personal • Proprietary
Email Client
Mac
Windows
Linux
Android
iPhone
Android Tablet
iPad
Android Wear
Kindle Fire
60 TypeApp alternatives
TypeApp is an all-free, beautifully designed, universal email app, capable of managing unlimited number of mail accounts from various providers, allowing for smart push notifications while enabling personalization across multiple email accounts.
Suggest and vote on features
TypeApp Features
1. Unified inboxView e-mails (or similar) from all accounts in one unified view with TypeApp.
2. Email OrganizerTypeApp allows you to take control of your inbox by filtering and control tools.
3. Privacy focusedTypeApp is considered a privacy friendly alternative.
4. Multiple Account supportTypeApp support multiple accounts without the need to logout and login
Live Push Notifications
Exchange
Kiwi for Gmail
Is this is a good alternative?
Yes
No
Paid • Proprietary
Email Client
Mac
Windows
20 Kiwi for Gmail alternatives
Kiwi for Gmail (formerly Gmail for Mac) turns Gmail into a full-powered desktop email client. No one wants to use Gmail in the browser on their phone, and we felt they shouldn't have to on Mac or Windows either.
Suggest and vote on features
Kiwi for Gmail Features
1. Multiple Account supportKiwi for Gmail support multiple accounts without the need to logout and login
Gmail
GSuite Integration
Polymail
Is this is a good alternative?
Yes
No
Paid • Proprietary
Email Client
Mac
Windows
Online
iPhone
iPad
82 Polymail alternatives
The most powerful platform for email productivity in a beautiful native app — on desktop and mobile.
Suggest and vote on features
Polymail Features
1. Email SchedulingYou can schedule a marketing, sales, or personal email for a time in the future with Polymail.
2. Multiple Account supportPolymail support multiple accounts without the need to logout and login
IMAP Support
Sync Contacts
Email tracking
Twobird
Is this is a good alternative?
Yes
No
Free • Proprietary
Email Client
Mac
Windows
Online
Android
iPhone
Android Tablet
iPad
8 Twobird alternatives
Welcome to Twobird, a new kind of email app that includes all your everyday tools. Write emails, create notes, set reminders and assign to-dos — all in your inbox.
Twobird has no features, suggest some!
WunderMail
Is this is a good alternative?
Yes
No
Freemium • Proprietary
Email Client
Windows
Gmail
69 WunderMail alternatives
The missing native desktop client for Gmail on Windows 10.
Suggest and vote on features
WunderMail Features
Gmail
Gmail integration
Discontinued
Development seems to have stopped. The latest version on the Windows Store is from 2018.