Thunderbird alternatives

At a glance

We list 9 other email clients tools as alternatives to Thunderbird: BlueMail, Canary Mail, eM Client, Front, Mailbird, Mimestream, Missive, Shortwave and Spark.
BlueMail, Canary Mail, eM Client, Mailbird and Spark have a free plan.

From each tool's own website and from published reviews. Each tool's page says when its facts were checked.

9 alternatives

Listed alphabetically. A tool is ranked by its reviews once it has 3.

BlueMail
Email client with a unified inbox, push mail, PGP encryption and AI.
No reviews yet
Choose it over Thunderbird for: iOS.
Free plan
Yes
Paid plans from
Plus, $6 per month, billed annually (as of November 14, 2026)
Free trial
7 days
Platforms
iOS, Android, macOS, Windows, Linux
Main features
Unified inbox, GemAI writing and summaries, PGP encryption
Security and compliance
SSO
Compare with Thunderbird
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Canary Mail
An email app with AI and a built-in calendar for all your accounts in one inbox.
No reviews yet
Choose it over Thunderbird for: iOS.
Free plan
Yes
Paid plans from
Growth, $3 per month, billed yearly at $36 (as of November 13, 2026)
Free trial
7 days
Platforms
macOS, iOS, Android, Windows
Main features
AI Copilot, Unified inbox, Shared inboxes
Security and compliance
GDPR, HIPAA
Compare with Thunderbird
Be the first to review
eM Client
A fully-featured email client for Windows and macOS with a clean and easy-to-use interface.
No reviews yet
Choose it over Thunderbird for: iOS.
Free plan
Yes
Paid plans from
Personal, A$79.95 per year (as of November 14, 2026)
Platforms
Windows, macOS, Android, iOS
Main features
AI Assistant, AI Summarize, Message encryption
Compare with Thunderbird
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Front
All your teams. All your AI agents. One place to run customer work, together
No reviews yet
Choose it over Thunderbird for: Web, iOS or API.
Paid plans from
Starter, $25 per seat per month, billed annually, up to 10 seats (as of October 20, 2026)
Free trial
14 days
Platforms
Web, macOS, Windows, iOS, Android, API
Main features
Autopilot, Copilot, Shared inbox
Security and compliance
SOC 2, ISO 27001, GDPR, HIPAA, SSO
Be the first to review
Mailbird
Bring all your email accounts into one desktop app that's quick, private, and intuitive.
No reviews yet
Choose it over Thunderbird for: iOS.
Free plan
Yes
Plans
Free: $0 (as of November 13, 2026)
Platforms
Windows, macOS, Android, iOS
Main features
Unified inbox, App integrations, Email tracking
Compare with Thunderbird
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Mimestream
A native macOS email client for Gmail.
No reviews yet
Choose it over Thunderbird for: iOS.
Paid plans from
Individual, $4.99 per month, or $49.99 per year (as of November 14, 2026)
Platforms
macOS, iOS
Main features
Inbox categories, Multiple accounts, Unified inbox
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Missive
Inbox collaboration for teams that run on email.
No reviews yet
Choose it over Thunderbird for: Web or iOS.
Platforms
Web, iOS, Android, macOS, Windows
Main features
Team inboxes, Internal threads, Tasks management
Security and compliance
SOC 2, GDPR, SSO
Compare with Thunderbird
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Shortwave
AI email that helps you organize, write, search and schedule with just a prompt.
No reviews yet
Choose it over Thunderbird for: iOS.
Paid plans from
Business, $30 per seat per month (as of November 13, 2026)
Free trial
14 days
Platforms
iOS, Android, macOS, Windows
Main features
AI email filters, AI search, Split inbox
Compare with Thunderbird
Be the first to review
Spark
Spark takes care of your inbox and calendar so you can focus on decisions, not admin.
No reviews yet
Choose it over Thunderbird for: Mac, iPhone or iPad.
Free plan
Yes
Paid plans from
Plus, $10 per user per month (as of November 13, 2026)
Platforms
Mac, Windows, iPhone, iPad, Android
Main features
Smart inbox, AI assistant, Meeting notes
Compare with Thunderbird
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At a glance

We list 9 other email clients tools as alternatives to Thunderbird: BlueMail, Canary Mail, eM Client, Front, Mailbird, Mimestream, Missive, Shortwave and Spark.

BlueMail, Canary Mail, eM Client, Mailbird and Spark have a free plan.

From each tool's own website and from published reviews. Each tool's page says when its facts were checked.