BlueMail vs Thunderbird

Price, platforms and features side by side. The table says where each price was read and when.

BlueMail

Cross-platform email client with a unified inbox and built-in AI

Free plan · from $35.99/yr

Thunderbird

Free, open-source email app for Windows, macOS, Linux and Android

Free

Where they differ

BlueMail starts at $35.99 per year (Plus, shown as $3 per month billed annually). Thunderbird is free.
Only BlueMail lists an iOS app.
BlueMail is end-to-end encrypted, according to its own site.
Thunderbird is open source, according to its own site.
BlueMail also covers templates and inbox filtering.
Thunderbird also covers tasks.

In commonFree planAndroidmacOSWindowsLinuxCalendarEmail client

	BlueMail	Thunderbird
Pricing	Free plan	Free
Starts at	$35.99 per year (Plus, shown as $3 per month billed annually)	Free
Free plan	Personal plan, free for individual use: unlimited email accounts, unified inbox, Clusters, MagicSync and PGP encryption on every platform. GemAI and desktop email backup are not included.	The whole app is free on desktop and Android, with no ads and no paid tier. Development is funded by voluntary donations.
Free trial	7-day free trial of Plus (annual subscriptions, per the FAQ) and 14-day free trial of Team	None listed
macOS
Windows
Linux
iOS
Android
Made by	Blix Inc.	MZLA Technologies Corporation
Price read from	bluemail.me	thunderbird.net
Checked	Oct 5, 2026	Oct 5, 2026

BlueMail

Thunderbird

BlueMail

GemAI, email backup on desktop and priority support need the paid Plus plan; S/MIME, SSO and MDM support are listed only on Enterprise.
No web version is listed: BlueMail runs as apps for iOS, Android, macOS, Windows and Linux.
The pricing page shows yearly prices as a rounded monthly figure ($3 and $8) and switches currency by country; the figures here come from its US price table.
The US App Store lists BlueMail+ in-app purchases at $6.99 and $49.99 with no billing period shown; the website prices Plus at $4.99 a month or $35.99 a year.

Thunderbird

Thunderbird Mobile is listed for Android only, through Google Play and F-Droid. No iPhone or iPad app is listed.
It is a mail client, not a mailbox: it connects to accounts hosted elsewhere. The team's own hosting service, Thundermail, is in beta behind a waitlist.
Thundermail is a separate paid subscription. Its Early Bird Plan is shown at $6 per month, paid annually, with full launch expected in 2026.
Support is community-based. Thunderbird states that donations do not buy individual technical support.

BlueMail

Unified Inbox: Mail from every account and provider appears in one combined view. Every plan, including the free one, allows unlimited email accounts.
Clusters: Automatically groups newsletters, transactions, shopping, social and personal mail, so everything in a group can be archived, moved or flagged at once.
GemAI: Generative AI that summarizes threads, drafts replies, rewrites text for tone or length and translates across 90+ languages. It is included from the Plus plan.
Active Screener: Holds mail from new senders in a review queue, where each sender can be allowed, blocked or sent to spam before reaching the inbox.
Integrated calendar: A calendar inside the mail app that syncs with Google, Apple and Outlook calendars and can propose meeting times directly from a thread.
PGP encryption: Encrypt, sign and verify messages with PGP keys that you bring or generate inside the app. S/MIME support is listed on the Enterprise plan only.

Thunderbird

Unified inbox for several accounts: Keep every email account in one app and read them separately or together in a unified inbox, on desktop and on Android.
Calendar, contacts and tasks: The desktop app manages appointments, contacts and tasks alongside email, so scheduling does not need a separate program.
No ads or data mining: Thunderbird says it does not sell ads in the inbox, collect personal data or train AI on private conversations. It is funded by user donations.
Open source and extensible: The code is published under the MPL 2.0 license for anyone to inspect, modify and share, and add-ons extend what the desktop app can do.
OpenPGP encryption on Android: Advanced users can send and receive encrypted mail with the OpenPGP standard by pairing Thunderbird Mobile with the free OpenKeychain app.
Desktop-to-mobile setup: Desktop users can move their account settings to the Android app by scanning a QR code shown in the desktop app.

BlueMail

Personal$0
For individuals: unlimited email accounts, unified inbox, Clusters, MagicSync, PGP encryption, light and dark themes, and community support.
Plus$35.99
per year (shown as $3 per month), or $4.99 billed monthly
Everything in Personal, plus unlimited GemAI, an email verified badge, premium themes, email backup on desktop and priority support.
Team$99
per user / year (shown as $8 per month), or $12 billed monthly
Everything in Plus, plus a domain verified badge, subscription and billing control, custom domain mailboxes and service configuration.
EnterpriseCustom
Adds identity provider integration (SSO), MDM support, S/MIME, adaptive multi-factor authentication, advanced governance and 24/7 priority support.

Thunderbird

Free$0
Every feature of Thunderbird Desktop for Windows, macOS and Linux and of Thunderbird Mobile for Android.

BlueMail

Annual discount
Lower price with yearly billing
In the US price table Plus is $35.99 a year against $4.99 a month (about 40% less) and Team is $99 per user a year against $12 a month (about 31% less). The page's toggle advertises a 20% saving.
Other savings
Volume pricing for Team plans over 100 seats
The pricing FAQ says Team plans with more than 100 seats receive automatic volume pricing, and Enterprise is quoted individually by sales.

Thunderbird

No public discounts listed.