Sylpheed review (2026): is it any good?
Lightweight desktop email client built on GTK+
Sylpheed report card
Good · out of 4.0 · graded Nov 13, 2026
Best for a light desktop mail client
Sylpheed is a free desktop mail client on GTK+ that keeps one file per message and has filters, search and plug-ins. The latest stable release is from January 2018, and its mailing list was announced as discontinued in September 2025.
Who Sylpheed is for
- Fits if you want a small, free mail program for an older computer
- Works for people who like one file per message on disk
Who Sylpheed is not for
- Skip it if you want regular updates, as the latest stable release is from January 2018
- Skip it if you want it on your phone, since no mobile apps are listed
- Watch out: the mailing list was announced as discontinued in September 2025
- Watch out: the 3.8 beta dates from September 2022
Why Sylpheed gets a 2.8
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- AValue for moneyFree under the GNU GPL, with nothing to host.
- AFree plan and trialFree under the GNU GPL, with no paid plans and no limits on the program.
- CFeaturesFiltering, search, GnuPG and plug-ins for the basics of mail. The last stable release is 3.7 from 2018, so don't expect new features.
- CEase of useNo store rating on record. You add each account yourself, and the interface is old but plain.
- CPlatforms and integrationsWindows, macOS and Linux, but nothing on phones or the web. A program for computers alone.
What these grades rest on. Graded from this listing, whose facts were read from the Sylpheed project's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. How we review and grade.
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<a href="https://toolgpa.com/tools/sylpheed#review"><img src="https://toolgpa.com/badge/sylpheed.svg" alt="Sylpheed: 2.8 GPA on ToolGPA" width="196" height="56"></a>Where Sylpheed stands among email apps
Sylpheed's GPA of 2.8 is higher than 88 of the 122 other email apps we grade, and level with 11.
It stands best on free plan and trial (A, above 97 of 122) and worst on features (C, above 1).
Sylpheed has no paid plan.
On features, ease of use and platforms it scores 2.0 out of 4. Nothing scores higher for less, though at least one tool matches that score at a lower price.
Each grade against the category
Every bar is all 123 email apps we grade, cut by the letter each got. Sylpheed’s own letter is outlined.
- AValue for moneyAbove 88 of 122, level with 34
- AFree plan and trialAbove 97 of 122, level with 25
- CFeaturesAbove 1 of 122, level with 77
- CEase of useAbove 20 of 122, level with 73
- CPlatforms and integrationsAbove 10 of 122, level with 46
Price against what you get
Each dot is one of 107 email apps. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep Sylpheed, or make your own?
Keep it
Sylpheed is free, so making your own would save you nothing.
And it is not the kind of software a weekend replaces. It is one of the better ones too: its GPA of 2.8 is higher than 88 of the 122 other email apps we grade.
What you could not
- An email client: sending, receiving, threading and searching years of mail.
- Filters that read every message as it arrives.
- Apps for macOS, Windows and Linux that stay in step with each other.
What this rests on. Sylpheed’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
What is Sylpheed?
Sylpheed is a lightweight desktop email client released under the GNU GPL. It is designed for keyboard-oriented use and runs on Windows, Linux, BSD, Mac OS X and other Unix-like systems. Its site lists filtering, search, junk mail control, GnuPG, SSL/TLS and plug-ins; the latest stable release shown is 3.7 from January 2018.
Worth knowing
- The latest stable release shown is 3.7 from 31 Jan 2018; 3.8beta1 dates from 14 Sep 2022.
- The Sylpheed mailing list was announced as discontinued in September 2025.
- No mobile apps are listed; the downloads cover desktop systems.
Key features
- One file per message
- Messages are stored one per file, which the site cites as a reason for reliability.
- Filtering and search
- The feature list names powerful filtering and search, plus junk mail control.
- Security
- Lists GnuPG and SSL/TLSv1 support, and a plug-in for automatic attachment encryption.
- Plug-ins
- Extensible through a plug-in system, with a plug-ins page and external command integration.
- Keyboard-oriented
- Built for keyboard operation as well as a conventional GTK+ interface for beginners.
Sylpheed pricing
As of Nov 13, 2026, Sylpheed is free to use.
- Starts at
- Free
- Free plan
- Free to use, modify and redistribute under the GNU GPL.
- Free trial
- None listed
| Plan | Price | What you get |
|---|---|---|
| Free | $0 | Free software distributed under the GNU GPL; no paid plans. |
Read from sylpheed.sraoss.jp on Nov 13, 2026. Prices change, so confirm with Sylpheed before you buy.
Works with
- GnuPG
- SylFilter
Sylpheed alternatives
- Sylpheed vs Mailspring
Free plan · from $8/mo
Common questions
Does Sylpheed have an Android app?
No Android app was listed when its pages were read on Nov 13, 2026. Sylpheed is listed for Windows, macOS and Linux.
Does Sylpheed have an iPhone app?
No iPhone app was listed when its pages were read on Nov 13, 2026. Sylpheed is listed for Windows, macOS and Linux.
Is Sylpheed open source?
Yes. Sylpheed is open source, according to its own site.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Nov 13, 2026.