Give your inbox a little order.
Bring accounts together. Organize with folders, labels and rules. Write rich messages with inline images and tables, and schedule mail for later.
A native Mac app. An independent project.
A little more calm.
A lot less inbox.
Meet Puffin Mail. Your email, calendars and contacts, together in a thoughtful Mac app. Built to help you find your flow, from the first message to the last.
An independent fork and macOS port of Penguin Mail ↗. Built on the work of its developers and contributors, with gratitude.
Open source · Made for macOS · Currently in development
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JL
Jamie Lee
A little room to breathe
Let's take the scenic route.
RS
Robin Shaw
Saturday by the sea
Found a lovely little café…
AC
Alex Chen
Notes for next week
A few ideas to get us started.
A little room to breathe
A little space for your week.
MON19
Planning
9:30 AM
9:30 AM
TUE20
Coffee with Jamie
10:00 AM
10:00 AM
WED21
Project catch-up
2:00 PM
2:00 PM
THU22
Focus time
11:00 AM
11:00 AM
FRI23
Walk by the sea
4:00 PM
4:00 PM
Familiar faces, all together.
JLJamie Lee
RSRobin Shaw
ACAlex Chen
Illustrative interface · Fictional messages and contactsTry the tabs above ↗
A familiar Mac homeMail, calendars & contactsThoughtful reading toolsOptional AI assistance
The everyday, considered
Less switching.
More getting on with it.
Mail has a way of becoming everything: your plans, your people, your to-do list. Puffin brings those pieces together, with room to focus on what matters.
See the shape of your day.
Keep calendars beside your mail. Plan events, set reminders and manage invitations, with day, week, month and agenda views.
Keep your people close.
Find contacts, work with lists and groups, and import from Mac Contacts. Optional Mac-to-Google syncing stays off until you choose to enable it.
A more comfortable read
Find your place.
Keep your focus.
Reading isn't the same for everyone. Puffin includes adjustable text and spacing, reading guides, read-aloud tools and subtle ruled lines to help you keep your place.
Small choices that make mail feel a little more comfortable. Choose what works for you.
Reading preferences are optional. Individual experiences will vary.
One message at a time.
A little space between lines.
A gentle guide for your eyes.
And room to read your way.
A little space between lines.
A gentle guide for your eyes.
And room to read your way.
AN ILLUSTRATION OF PUFFIN'S OPTIONAL READING LINES
Your mail. Your choices.
A helpful companion.
With clear boundaries.
Puffin connects your Mac directly to your mail provider. We don't run a Puffin mail relay or a server that stores your mailbox.
Read exactly how your data is handled ↗Your accounts stay yours.
Account credentials use macOS Keychain. Cached mail, calendar and contact records use an encrypted local database. Exports and OS-managed copies have separate protections.
AI is optional, and sharing is reviewed.
Connect your own OpenAI or Claude API key for help with writing, summaries and mail or calendar tasks. Before each model request, review its destination and content. These cloud services may retain what you approve sending.
Changes ask for your approval.
Assistant changes to mail, contacts and calendars require review. Optional external tools have separate approvals. Neither AI nor external tools are needed for ordinary mail.
A few things to know
Before Puffin takes flight.
Can I download Puffin Mail yet?
Not from this site yet. Puffin is in development, and this is a preview of the project. There is no public download or release date to announce. Google verification and public-release preparation are still in progress.
Which accounts does Puffin work with?
The app includes support for Google and Microsoft accounts and standard mail protocols, with calendar and contact features depending on the provider. Public Google sign-in approval is still pending; this preview is not a claim of Google certification.
Does Puffin need an AI subscription?
No. Ordinary mail, calendar and contact features do not require AI. The optional assistant uses your own commercial OpenAI or Claude API key, with usage charged by your chosen provider. Consumer chat subscriptions are not used for this connection.
Is Puffin open source?
Yes. Puffin is an independent macOS fork of Penguin Mail, retaining the GPL-3.0-or-later license and upstream notices. It is a separate project, developed by Miguel Rodriguez. Public source and release links will be added when available; the upstream project is acknowledged in our project notes.
Is everything processed locally?
No. Mail, calendar and contact synchronization connects to the providers you configure. Optional AI, translation and external tools can send reviewed content to other services. Loading remote images can also contact a sender's servers. Our privacy policy explains these choices and their limits.
Our open source roots
Penguin made the first tracks.
Puffin Mail began with Penguin Mail, the open source Linux email client. Its design and shared Rust engine provided the foundation for this independent fork and macOS port.
Our thanks go to Penguin Mail's developers and contributors. Their work made Puffin possible. We retain the upstream copyright notices and GPL-3.0-or-later license.
Explore the original Penguin Mail project ↗A small project. A thoughtful beginning.
Puffin is still finding its wings. Have a question, a reading preference you'd love to see, or feedback on the preview? We'd like to hear it.