Fastmail vs Thunderbird

Fastmail Independent paid email service with fast web and mobile clients, custom domains, and strong privacy stance.

Thunderbird Open-source desktop email client from Mozilla with extensive add-on support and built-in calendar.

Email ClientsFreeOpen Source

Quick Facts

FastmailCompanyMZLA Technologies

1999Year Launched2004

PaidPricing ModelFree

NoOpen SourceYes

Email ClientsCategoryEmail Clients

macOS, Windows, Linux, WebPlatformsmacOS, Windows, Web

Fastmail

CompanyFastmail

Year Launched1999

Pricing ModelPaid

Open SourceNo

CategoryEmail Clients

PlatformsmacOS, Windows, Linux, Web

Thunderbird

CompanyMZLA Technologies

Year Launched2004

Pricing ModelFree

Open SourceYes

CategoryEmail Clients

PlatformsmacOS, Windows, Web

Fastmail

Paid

Paid: Custom pricing/Monthly/Yearly per seat

Thunderbird

Free

Free: $0/one-time

What practitioners say

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Fastmail

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Thunderbird

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