PigeonPost
PigeonPost: A capable free desktop client for multi-account email, offline search, calendars and contacts. Ranked #26 of 142 in Email Clients by our editors (6.8/10); pricing: Free plan; best for free open-source desktop email and calendar.
At a glance
- Editor score6.8 / 10
- PricingFree plan
- Best forFree open-source desktop email and calendar
- Free planYes
- Paid fromFree
- App coverageDesktop
- Facts checked23 Sep 2026
Where it wins
- Free GPL-3.0 desktop apps with no subscription or account required
- Offline local mail search, unified inbox and scheduled sending
- Email, calendar, contacts and rules in one desktop application
Where it doesn't
- Desktop-only coverage excludes mobile platforms
- No documented AI features
- Requires existing IMAP, POP3 or compatible provider accounts
Our verdict on PigeonPost
PigeonPost is a free, open-source desktop email client for Windows, macOS and Linux. It connects to existing IMAP or POP3 accounts, including Gmail, iCloud, Yahoo, Zoho, Fastmail, StartMail, Outlook.com, Hotmail and Microsoft 365. It is aimed at people who want one local application for multiple inboxes, offline reading and search, calendars, contacts and everyday email composition without creating a PigeonPost account or paying a subscription.
The published Free plan costs 0 and includes GPL-3.0 licensing, desktop apps for Windows, macOS and Linux, and no subscription. Its provider coverage is broad for a desktop client: it supports IMAP, POP3, SMTP and CalDAV, with connections for commonly used services such as Gmail, iCloud, Yahoo, Zoho, Fastmail and Microsoft accounts. The optional unified mailbox combines inboxes, while calendar synchronization and .ics import/export help it fit workflows that span more than one provider.
Its feature set is notably wide for a free desktop application. Scheduled sending supports presets or exact times; local search works offline; the calendar offers month, week and day views; and contacts support vCard and CSV import/export. Rich-text composition includes attachments, drafts and signatures, while on-arrival rules handle routine mail organization. Choose PigeonPost if desktop access, local data availability and open-source licensing matter more than mobile apps or AI features. Those seeking a mobile email experience or documented AI capabilities should consider an alternative.
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PigeonPost pricing
PigeonPost fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Free |
| App coverage | Desktop |
| Account limit | Not verified |
| Unified inbox | Yes |
| Offline access | Yes |
| Scheduled sending | Yes |
| Calendar tools | Yes |
| Deployment | Desktop |
| Platforms | Windows, macOS, Linux |
| Built for | Solo, Small business (editorial estimate) |
| Integrations | 11 integrations: Gmail, Hotmail and Outlook.com, iCloud, Fastmail, Yahoo, StartMail … |
| Pricing | Free plan |
| Website | pigeonpost.ink |
| Facts checked | 23 Sep 2026 |
PigeonPost integrations
PigeonPost lists 11 integrations on its own site.
- Gmail
- Hotmail and Outlook.com
- iCloud
- Fastmail
- Yahoo
- StartMail
- Zoho
- Teams
- Google Meet
- Zoom
- Webex
Alternatives to PigeonPost
- Mozilla ThunderbirdA capable free client for multi-account email, offline access, and desktop productivity tools.9.4
- Zoho MailA flexible hosted email service with free access, migration tools, and Zoho collaboration options.9.2
- Apple MailA capable Apple-focused email client with unified inboxes, scheduling, privacy controls, and AI assistance.9.1
See all PigeonPost alternatives →
Also Ranked In
PigeonPost is ranked in 2 of our directories.
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Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
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