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Fastmail
@fastmail.com
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Email and calendar made better. Get fast, private email hosting for you or your business. Find out more at https://www.fastmail.com This channel is not monitored by Fastmail support. If you need help, please submit a ticket at https://fastmail.com/support
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Hello! Our Linux app is available. Head to our download page to grab the update.
The Fastmail Desktop App is here!

For macOS, Windows, and Linux — with full offline support, native notifications, and default email integration.

Goodbye browser tabs 👋
Hello focused productivity 💪

🔗 Learn more:
www.fastmail.com/blog/desktop...

#Fastmail #EmailMadeBetter #DesktopApp
Introducing the Fastmail desktop app
Fastmail now has native apps for Mac, Windows & Linux.
www.fastmail.com
💻Happy Software Freedom Day! 🎉
Our engineers solved a year-long crash mystery and shared the fix with the open-source Cache::FastMmap project. That’s the spirit of open source: share, improve, and make the internet more reliable.

fastmail.com/blog/the-cac...
#Fastmail #MakeEmailBetter #BetterEmail
The Cache Crash
What happens when a mysterious bug causes all your tests to fail once or twice a week? We try to solve these mysteries, even if it takes a year.
fastmail.com
🎉 Stay productive anywhere with offline support! Read, draft, and organise your email even without the internet. Everything syncs when you’re back online. Perfect for flights, commutes, or spotty coverage.

Now in the Fastmail app and web.

Learn more: www.fastmail.com/blog/fastmai...

#fastmail
Work offline with Fastmail
Fastmail can now work offline on your phone and on the web.
www.fastmail.com
✨ Better themes, faster navigation, and smarter search

Fastmail’s latest updates make your experience smoother than ever. Enjoy new themes, quicker navigation, accounts, and calendar views, smarter search, and more.

Check out all the updates:
www.fastmail.com/blog/better-...
🚀 Fastmail’s IMAP just got faster.

We’ve rolled out TWOM — a new database format with smarter storage, fewer slowdowns, and better performance. It’s now live across all servers.

Read more:
www.fastmail.com/blog/introdu...
#Fastmail
Introducing the twom database format
We replaced the twoskip database format with something faster and better.
www.fastmail.com
🔒 Privacy fatigue is real, but you don’t have to do it all at once.


This #PrivacyAwarenessWeek, start with one easy win: use a password manager.
Small steps = better control of your digital life. #Fastmail #PAW2025

Read more:
www.fastmail.com/blog/address...
Addressing Privacy Fatigue
Privacy fatigue is a real feeling — here's how to make it manageable
www.fastmail.com
📥 Fastmail’s inbox has been thoughtfully refreshed — now with a cleaner layout, improved usability, and more ways to customize your experience on web and mobile.

Learn more: fastmail.com/blog/revampe...
#ProductivityTips #Fastmail
A revamped Fastmail inbox
We’ve rolled out an updated look to your message list, in both our webmail and mobile apps.
fastmail.com
📬 Happy International Email Day!

At Fastmail, email isn't just our business — it's our passion. Open standards, privacy, and real control over your inbox? That’s worth celebrating. 💌

#InternationalEmailDay #Fastmail

www.fastmail.com/blog/happy-i...
Happy International Email Day
Celebrate International Email Day with us! Discover why email still rules and how Fastmail is making it better every day.
www.fastmail.com
Advent Day 20: 💡How Fastmail uses Fastmail.
From Labels to Snooze and Schedule Send, we rely on our features every day. Curious how we use them? Discover tips from our team and find your new favourite feature!

🔗 Learn more: www.fastmail.com/blog/how-fas...
#FastmailAdvent
Dec 20: How Fastmail uses Fastmail!
Discover how our support team use their favorite email features in their daily workflows and personal lives.
www.fastmail.com
Advent Day 19: ✉️ Building offline: mail storage. Neil Jenkins explores how Fastmail handles large volumes of data to make email access seamless—even when you're offline. This marks the final post in our offline mini-series.

Read more. #FastmailAdvent #tech
Dec 19: Building offline: mail storage
How we made your mail work fast offline.
www.fastmail.com
Dec 18: 🔄 Building offline: syncing changes.

How do we sync offline changes? Our hybrid approach logs changes & patches updates for efficient syncing & smooth conflict resolution. Edits merge seamlessly when back online.

Read more: www.fastmail.com/blog/offline...
#FastmailAdvent
Dec 18: Building offline: syncing changes back to the server
How offline changes are tracked and replayed.
www.fastmail.com
Dec 17: 🔨 Building offline: general architecture.
In today’s Advent post, Neil Jenkins explores the architecture behind Fastmail’s new offline support. Learn how we built a caching layer to handle JMAP requests directly on your device.

Read more: www.fastmail.com/blog/offline...
#FastmailAdvent
Dec 17: Building offline: general architecture
A technical deep dive into how we added offline support to Fastmail.
www.fastmail.com
Advent Day 16: 🚀 Offline support now in public beta! Use Fastmail offline on your phone and on the web. Read mail and reply, view and edit your contacts, update your calendar, and more, all when you're without internet.

Learn more: www.fastmail.com/blog/offline...
Offline support now in public beta
Use Fastmail offline on your phone and on the web.
www.fastmail.com
Advent Day 15: 🙌 Behind Fastmail's platform magic lies a strong team and a clear working agreement. From proactive monitoring to collaborative problem-solving, our platform engineers ensure reliability.

Learn more: www.fastmail.com/blog/platfor...
#FastmailAdvent
Dec 15: Platform Team working agreement
An inside look at the lifeguards who monitor, protect, and improve our internal systems.
www.fastmail.com
Day 14 of our Advent Series: 🚨Dive into the tech behind Fastmail's on-call systems! From alerts and incident management to balancing engineer well-being, see how we keep services running smoothly.

Read more
#Tech #FastmailAdvent
Dec 14: On-Call Systems
How Fastmail makes on-call work
www.fastmail.com
🔮 On this spooky Friday the 13th, we're banishing bad luck from our DNS setup! Learn how Fastmail’s move to Knot DNS transformed potential domain nightmares into a streamlined, reliable dream.

Read about the change that keeps your email running smoothly. #FastmailAdvent
Dec 13: It’s knot DNS. There’s no way it’s DNS. It is DNS!
How we upgraded our DNS servers to Knot DNS
www.fastmail.com
Dec 12:☀️Following the Sun. How does Fastmail deliver 24/7 support? With a "Follow the Sun" model, our teams ensure seamless, round-the-clock service.

Learn how we keep the mail flowing: www.fastmail.com/blog/followi...
#FastmailAdvent
Dec 12: Following the Sun
Keeping Fastmail going around the clock
www.fastmail.com
Day 11 of #FastmailAdvent: Meet Marc, our Head of the new Trust, Abuse, and Deliverability team. With 10+ years at Fastmail, he ensures smooth mail flow, loves memos & labels, and stays active cycling.
Dec 11: Meet the team—Marc
Meet Marc, our Head of the new Trust, Abuse, and Deliverability team.
www.fastmail.com
Day 10 of our Advent series: After 30 years, Pobox has merged into Fastmail. A bittersweet end of an era but a smooth transition to an exciting new chapter. Thanks to everyone who made it happen—here’s to the future!

#FastmailAdvent
Dec 10: Sunsetting Pobox
Pobox is Fastmail now, but we’re still in love with email.
www.fastmail.com
Dec 9: 🛠️ Building our blog, as part of #FastmailAdvent, we’re taking a look at how we transformed our blog—moving from WordPress to Eleventy for simplicity, speed, and efficiency.
Dec 9: Building a blog
A quick look at the tools we used to build our new blog & marketing site.
www.fastmail.com
Dec 8: 🌟 Guiding Principles.
Our principles shape everything we do:
🌐 Be a good internet citizen
🔧 Build the future
🤔 Seek understanding
💬 Value discussion

These values guide us to deliver better email, read more:
#FastmailAdvent #Company
Dec 8: Guiding principles
The principles that inform how we work at Fastmail
www.fastmail.com
Dec 7: 💌 Revision of the Core Email Specifications.

The IETF is updating core email standards (SMTP & IMF) for clarity and modern use—keeping email running smoothly since 2008.

Learn about the updates shaping email’s future.
#FastmailAdvent #OpenTech
Dec 7: Revision of the Core Email Specifications
The EMAILCORE working group at IETF is updating the core email specifications
www.fastmail.com