Alternatives to BlueMail
Cross-platform email and calendar client with a unified inbox. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
BlueMail
Cross-platform email and calendar client with a unified inbox.
Replacements
Listings that take over the same core job as BlueMail.
Thunderbird
Mozilla’s desktop mail client, with calendar, contacts and a unified inbox, funded by donations rather than ads.
Thunderbird is free and open source with a unified inbox, calendar and built-in OpenPGP on Windows, macOS, Linux and Android, though it has no iOS app.
Microsoft Outlook
Microsoft's email, calendar and contacts app for desktop, mobile and the web.
Microsoft Outlook covers desktop, mobile and web with mail, calendar and contacts for multiple accounts, integrating with Microsoft 365 but tied to Microsoft services.
Spark Mail
Smart email client that auto-sorts inboxes and drafts AI-powered replies.
Spark Mail adds automatic inbox categorization and AI-drafted replies on Windows, macOS, Android and iOS, with no Linux version and AI features on a paid plan.
eM Client
A polished commercial mail, calendar and contacts client for Windows and Mac, with a free tier capped at two accounts.
eM Client adds tasks, notes, chat and PGP and S/MIME encryption with a one-time purchase option, but has no Linux version and the free tier allows two accounts.
Mailspring
A desktop mail client with a unified inbox, snooze and send later, whose paid tier adds read receipts.
Mailspring is open source under GPL-3.0 and keeps credentials on your machine, with a free unified inbox on Windows, macOS and Linux but no built-in calendar.
Mailbird
Desktop email client for Windows and macOS with a unified inbox.
Mailbird offers a unified inbox with app integrations on Windows and macOS only, and its full feature set requires a paid license.
Canary Mail
Encrypted email client with AI features across desktop and mobile.
Canary Mail focuses on built-in encryption and AI triage across Windows, Mac, iOS and Android, but needs a paid subscription for the full feature set.
Spike
Turns email into a chat-like interface with message bubbles instead of a list.
Spike presents email as chat-style message bubbles instead of a list on Windows, macOS, Android and iOS, with advanced AI and team features paid.
Also worth comparing
These listings name BlueMail as their own alternative, so the relationship runs both ways.
Apple Mail
The email app built into macOS, iOS and iPadOS for reading mail from several providers.
BlueMail offers one unified inbox with shared settings across Windows, macOS, Linux, Android and iOS, but some features are paid and its credential handling has drawn criticism.
Betterbird
A Thunderbird fork that ships extra fixes and features, and can run side by side on the same profile.
BlueMail is a closed-source freemium client for Windows, macOS and Linux with a unified inbox and calendar, though its credential handling has drawn criticism.
Edison Mail
A multi-account email app that combines all your inboxes into one place, without ads.
BlueMail offers a unified inbox and calendar across Windows, macOS, Linux, Android and iOS, though some features need a paid plan.
K-9 Mail
Open-source Android email client built for handling large volumes of mail.
BlueMail offers a unified inbox and calendar with shared settings across mobile and desktop, but is closed source and its credential handling has drawn criticism.
Wino Mail
Native Windows mail and calendar client for Outlook, Gmail and IMAP accounts.
BlueMail provides a unified inbox and calendar across Windows, macOS, Linux and mobile, but it is closed source and some features need a paid plan.
Similar software
Related functionality, not a direct replacement.
Microsoft Outlook for iOS and Android
Microsoft's Outlook mobile app for email, calendar and contacts on iPhone, iPad and Android.