Posthorn is an open-source project built for developers running self-hosted LLMs.

Yes — Posthorn is open source under the Open Source license and free to use.

What platforms does Posthorn run on?

Posthorn runs on the web and the command line. It can also be self-hosted.

Is Posthorn still active?

Unverified. Posthorn has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.

Who develops Posthorn?

Posthorn is developed by Tangled.

How long has Posthorn been around?

Posthorn first shipped in 2024.

Is Posthorn open source?

Yes — Posthorn is open source under the Open Source license.

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Posthorn

Name: Posthorn
Author: Tangled

tangled.orgInfrastructure

The next-generation social coding platform.

Open SourceWebCLISelf-hosted

Visit tangled.org

1alternative

5features

2024since

Overview

5 features

Posthorn is an Infrastructure & Backend project. It focuses on enabling asynchronous, email-like communication with local LLMs for users who want slow, self-hosted AI interactions. Posthorn is an open-source project aimed at developers running self-hosted LLMs. The project is open source (Open Source). Posthorn is available on the web and the command line, and it can be self-hosted.

It is developed by Tangled, and it first shipped in 2024. Key capabilities include IMAP gateway, SMTP gateway, and self-hosted.

IMAP gateway
SMTP gateway
Self-hosted
Pen-pal daemon
LLM integration

Built with & integrations

AI providers

local_oss

Runs on

BrowserCLISelf-hosted

Detected from

local_oss: bollama in the HTML

Trust & compliance

License

Open Source

Verified signals

HTTPSPrivacy Policy Terms of ServiceOpen SourceFree tier

Legal

Indexing history

What PulseGate has recorded for this listing

Indexed7 Jul · 08:31 UTC
Posthorn – A self-contained email pen-pal daemon for slow, self-hosted LLMs verified against its public source
Source: PulseGate · Open

Frequently asked questions about Posthorn

What does Posthorn do?: Posthorn focuses on enabling asynchronous, email-like communication with local LLMs for users who want slow, self-hosted AI interactions. It is catalogued under Infrastructure & Backend on PulseGate.
Who is Posthorn for?: Posthorn is an open-source project built for developers running self-hosted LLMs.
Is Posthorn free?: Yes — Posthorn is open source under the Open Source license and free to use.
What platforms does Posthorn run on?: Posthorn runs on the web and the command line. It can also be self-hosted.
Is Posthorn still active?: Unverified. Posthorn has not been re-checked since it entered the index, so there is no finding either way — and only a positive finding would say otherwise.
Who develops Posthorn?: Posthorn is developed by Tangled.
How long has Posthorn been around?: Posthorn first shipped in 2024.
Is Posthorn open source?: Yes — Posthorn is open source under the Open Source license.

At a glance

Pricing: Open Source
Platforms: Web
Languages: English
License: Open Source
Built for: developers running self-hosted LLMs
Model: Open source
Solves: Enabling asynchronous, email-like communication with local LLMs for users who want slow, self-hosted AI interactions.

Developer

Tangled

Index record

Indexed: 7 Jul 2026
Lifecycle: Alive
Last seen: 7 Jul 2026

Identity audit (11)

Slug: posthorn-a-self-contained-email-pen-pal-daemon-for-slow-se-tangled-org
Lifecycle last checked: 8 Aug 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 7 Jul 2026
Timeline basis: Indexed-at chronology. This listing's first-seen date was written by the catalog backfill, not observed here, so it is not treated as a sighting.
Name from: Derived from the project's own page and URL.
Category from: Assigned by a language model.
Languages from: Detected by a language model, checked against the page's own declaration.
Canonical URL: https://tangled.org/clee.sh/posthorn

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