Compare
How Pimkin
compares.
Most mail apps make you choose: one ecosystem, one platform, or one tool at a time. Pimkin is a federating client — mail, calendar, contacts, and tasks together, across the accounts you already have, on the web and native desktop. Here's how that stacks up against the clients people ask about most.
At a glance
The short version.
A quick, factual side-by-side. Values reflect each product as generally available in 2026; the notes below add the nuance a table can't.
| Capability | Pimkin | Thunderbird | Spark | Apple Mail | Outlook |
|---|---|---|---|---|---|
| Mail, calendar, contacts & tasks in one app | Mail-first | Mail only | |||
| Provider-neutral — Gmail, Microsoft 365, IMAP, CalDAV, CardDAV, LDAP | Mail only | Partial | Microsoft-first | ||
| Web app | — | — | — | ||
| Native desktop on macOS, Windows & Linux | Mac & Windows | macOS only | Mac & Windows | ||
| Free to use | Freemium | Freemium |
The nuance
What each does well — and where Pimkin differs.
Every one of these is a good app. The question is fit: how many tools, how many providers, and how many platforms you need in one place.
Pimkin vs Thunderbird →
The difference is reach. Pimkin adds a first-class web app and hosted cross-device sync alongside the native desktop build, with a modern unified experience out of the box rather than through add-ons and configuration. Both are clients, not walled gardens — Pimkin just meets you on more surfaces.
Pimkin vs Spark →
Pimkin is provider-neutral and brings calendar, contacts, and tasks over open protocols — CalDAV, CardDAV, and LDAP — into the same window as your mail. It adds a native Linux desktop and a full web app, and federates directly to the accounts you already have.
Pimkin vs Apple Mail →
But it is mail-only — Calendar and Contacts are separate apps — and it lives inside the Apple ecosystem. Pimkin brings all four tools together on macOS, Windows, Linux, and the web, across whichever providers you already use, from Gmail to Microsoft 365 to any IMAP or CalDAV server.
Pimkin vs Outlook →
It is also built around Microsoft accounts and its cloud, with non-Microsoft accounts as second-class citizens. Pimkin is provider-neutral — Gmail, Microsoft 365, IMAP, CalDAV, CardDAV, and LDAP are equal citizens — and runs natively on Linux as well as macOS and Windows.
See it for yourself.
Open the web app in seconds, or install the desktop client and take it offline.