OnMail Alternatives

OnMail is described as 'It's time to change email. A brand new email service, built from scratch for today's world' and is an app. There are more than 10 alternatives to OnMail for a variety of platforms, including Web-based, Android, iPhone, iPad and Windows apps. The best OnMail alternative is Proton Mail, which is both free and Open Source. Other great apps like OnMail are Gmail, Microsoft Outlook, mailbox and Zoho Mail.

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OnMail alternatives page was last updated Feb 25, 2025

Proton Mail
1026 likes
Proton Mail provides secure email services with end-to-end encryption, ensuring data protection. Swiss-based and outside US jurisdiction, it offers a free version to champion privacy as a human right. Fully accessible on any device.
99 Proton Mail alternatives
Cost / License
Freemium (Subscription)
Open Source (GPL-3.0)
Application types
WebMail Provider
Email Client
Origin
Switzerland
Platforms
Mac
Windows
Linux
Online
Android
iPhone
iPad
Tor
Flathub
Snapcraft
+9
Is Proton Mail a good alternative to OnMail?
Proton Mail is the most popular Web-based, Windows, Android & Mac alternative to OnMail.
Proton Mail is the most popular Open Source & free alternative to OnMail.
Proton Mail is Freemium and Open SourceOnMail is Freemium and Proprietary
Proton Mail is Privacy focusedOnMail is not according to our users
Gmail
3206 likes
Gmail offers robust spam blocking, undo send, Google Chat for collaboration, Spaces for organizing projects, Google Meet video calls, Smart Reply, threaded conversations, and swift notifications, seamlessly integrating with Google Workspace for a comprehensive email experience.
84 Gmail alternatives
Cost / License
Free
Proprietary
Application types
WebMail Provider
Email Client
Origin
United States
Platforms
Online
Android
iPhone
Chrome OS
Android Tablet
iPad
Google Chrome
Android Wear
Android TV
Software as a Service (SaaS)
Is Gmail a good alternative to OnMail?
Gmail is the most popular SaaS & Android Tablet alternative to OnMail.
Gmail is Free and ProprietaryOnMail is Freemium and Proprietary
Microsoft Outlook
397 likes
Streamline emails, calendars, contacts, and task management with a smart inbox prioritizing critical messages. Includes calendar scheduling, third-party app integration like Facebook, Dropbox, and Trello, and support for Microsoft Exchange, Outlook.com, and Gmail, ensuring efficient task and email handling.
126 Microsoft Outlook alternatives
Cost / License
Pay once or Subscription
Proprietary
Application types
Email Client
Calendar App
Origin
United States
Platforms
Mac
Windows
Online
Android
iPhone
Android Tablet
iPad
Apple Watch
Android Wear
+7
Is Microsoft Outlook a good alternative to OnMail?
Microsoft Outlook is the most popular commercial alternative to OnMail.
Microsoft Outlook is Paid and ProprietaryOnMail is Freemium and Proprietary
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Superhuman Mail
Productivity-centered email application streamlines inbox management, uses AI for drafting responses, automates snippets, summarizes conversations, enables timely sends, integrates calendar and CRM, and includes collaborative fea...

https://superhuman.com
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mailbox
74 likes
E-mail inbox, online office, cloud storage, and video conferencing. Business or personal plans. From 1 € /month (1.10 USD).
83 mailbox alternatives
Cost / License
Subscription
Proprietary (AGPL-3.0)
Application types
WebMail Provider
Email Client
Origin
Germany
EU
Platforms
Online
+3
Is mailbox a good alternative to OnMail?
Zoho Mail
121 likes
Zoho Mail is a secure, encrypted, and enterprise-ready email solution, a suite of apps tailor-made for your organization's needs.
109 Zoho Mail alternatives
Cost / License
Freemium (Subscription)
Proprietary
Application types
WebMail Provider
Email Client
Origin
India
Platforms
Mac
Windows
Linux
Online
Android
iPhone
Android Tablet
iPad
Apple Watch
HUAWEI AppGallery
Samsung Galaxy Store
+3
Is Zoho Mail a good alternative to OnMail?
Fastmail
76 likes
Fastmail offers secure email hosting with comprehensive webmail services, including IMAP, POP, and SMTP protocols. It supports file sharing, shared folders, large mailboxes, instant messaging, and is compatible with popular email programs. Excellent for businesses with compliance features.
74 Fastmail alternatives
Cost / License
Subscription
Proprietary
Application types
WebMail Provider
Mail Server
Origin
Australia
Platforms
Mac
Windows
Linux
Online
Android
iPhone
Android Tablet
iPad
Flathub
Flatpak
+6
Is Fastmail a good alternative to OnMail?
Vivaldi Mail
34 likes
Vivaldi Mail is a free email service with no ads and no strings attached developed by Vivaldi Technologies. It also offers contacts and calendar features, search capabilities, folders management, WEB/POP/IMAP access, 10GB of storage capacity, 20 MB of maximum attachment size...
102 Vivaldi Mail alternatives
Cost / License
Free
Proprietary
Application types
WebMail Provider
Email Client
Origin
Norway
Platforms
Online
Vivaldi
+2
Is Vivaldi Mail a good alternative to OnMail?
BlueMail
33 likes
BlueMail is a modern, mobile first, powerful Email management tool with a sleek design, unified inbox and support for all your accounts: IMAP,Exchange,POP3.
32 BlueMail alternatives
Cost / License
Free Personal
Proprietary
Application type
Email Client
Origin
United States
Platforms
Mac
Windows
Linux
Android
iPhone
Chrome OS
Android Tablet
iPad
Apple Watch
Is BlueMail a good alternative to OnMail?
lockrMail
14 likes
lockrMail is a free productivity tool that acts as a pre-filter for your inbox, providing you with a unique and secure email address to use online. Custom filters enable you to decide which brand emails come to your inbox and which are blocked.
Cost / License
Free
Proprietary
Application types
Disposable Email Service
Privacy Tool
Origin
United States
Platforms
Online
+2
Is lockrMail a good alternative to OnMail?
PissMail
4 likes
Handing out free email addresses on edgy/based/cringe domain names since 2021.
53 PissMail alternatives
Cost / License
Free
Proprietary
Application type
WebMail Provider
Platforms
Online
Is PissMail a good alternative to OnMail?
Superhuman Mail
3 likes
Productivity-centered email application streamlines inbox management, uses AI for drafting responses, automates snippets, summarizes conversations, enables timely sends, integrates calendar and CRM, and includes collaborative features like live views and comments.
54 Superhuman Mail alternatives
Cost / License
Subscription
Proprietary
Application type
Email Client
Origin
United States
Platforms
Mac
Online
iPhone
iPad
Android
Android Tablet
Windows
Is Superhuman Mail a good alternative to OnMail?
HEY Email
9 likes
Hey is a new hosted email service launched by the makers of Basecamp , which aims to organize your email inbox. Since they don’t sell ads, or invade your privacy, they charge $99/year for HEY
102 HEY Email alternatives
Cost / License
Subscription
Proprietary
Application types
WebMail Provider
Email Client
Origin
United States
Platforms
Mac
Windows
Linux
Online
Android
iPhone
Android Tablet
iPad
Snapcraft
Is HEY Email a good alternative to OnMail?