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SPECIFICTION
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Postmill AI

postmill.ai

From $7.50/mo Free plan WebAPISelf-hosted
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Spec score 8.4 #30 of 145 in Social Media Management Tools

What it is

Postmill AI combines social media content creation, scheduling, publishing, replies, and reporting in a web platform, with API and self-hosted options. The maker lists 45 channels across social, chat, blog, and email. A composer can adapt one draft by channel with previews, format overrides, brand-voice rewrites, and preflight checks. Its design studio includes a canvas, layers, brand kits, a five-track video timeline, and 36 generation studios. Scheduling tools include a visual calendar, timezone-aware recurring slots, auto-post queues, CSV bulk import, and automatic retries after network hiccups. Postmill says it snapshots metrics daily and brings replies from 19 channels into one inbox, with AI-drafted responses. Writing and replies use 30 model providers, and AI runs on customers’ own keys without credit packs, AI seat fees, or markup. The core is AGPL-3.0 open source; self-hosting on the customer’s hardware is free. Paid plans are billed monthly: Starter is $9 a month, Pro $29 a month, Team $99 a month, and Agency $249 a month.

Spec sheet

Product
Postmill is an AI-native social media management platform for writing, designing, scheduling, publishing, replying, and reporting.Read 12 Oct 2026 · postmill.ai
Intended users
Plans are presented for an individual, a team, and agencies managing client brands in one workspace.Read 12 Oct 2026 · postmill.ai
Free plan
YesRead 20 Sep 2026 · postmill.ai
Paid from
9Read 20 Sep 2026 · postmill.ai
Integrations
Listed channel integrations include X, Instagram, LinkedIn, TikTok, YouTube, Discord, Telegram, Slack, Mastodon, Reddit, WordPress, and others.Read 12 Oct 2026 · postmill.ai
Security
The homepage states that channel connections use official OAuth and that no passwords are stored.Read 12 Oct 2026 · postmill.ai
Support
Priority support is included in the Agency plan.Read 12 Oct 2026 · postmill.ai
AI providers
The maker says writing and replies use 30 model providers and AI runs on customers’ own keys without credit packs, AI seat fees, or markup.Read 12 Oct 2026 · postmill.ai
Analytics and inbox
Postmill says it snapshots metrics daily and brings replies from 19 channels into one inbox with AI-drafted responses.Read 12 Oct 2026 · postmill.ai
Automation
The Agency section lists API, SDK, webhooks, Zapier, Make, n8n, and MCP.Read 12 Oct 2026 · postmill.ai
Channels
The maker lists 45 channels across social, chat, blog, and email.Read 12 Oct 2026 · postmill.ai
Composer
One draft can be tailored by channel with previews, format overrides, brand-voice rewrites, and preflight validation.Read 12 Oct 2026 · postmill.ai
Design
The design studio includes a canvas, layers, brand kits, a five-track video timeline, and 36 generation studios.Read 12 Oct 2026 · postmill.ai
Open source and hosting
The core is AGPL-3.0 open source; self-hosting is free on the customer’s hardware, and the maker says data stays within that infrastructure.Read 12 Oct 2026 · postmill.ai
Scheduling
Scheduling includes a visual calendar, timezone-aware recurring slots, auto-post queues, CSV bulk import, and automatic retry after network hiccups.Read 12 Oct 2026 · postmill.ai
Security controls
The homepage lists Google, GitHub, and OIDC SSO, encrypted secrets at rest, per-device session control, and platform-only official OAuth.Read 12 Oct 2026 · postmill.ai

Plans and prices

Starter $9 a month billed monthly 1 seat · 3 channels · 100 posts/mo Read 12 Oct 2026 · postmill.ai
Starter $90 a year Yearly 1 seat · 3 channels · 100 posts/mo Read 20 Sep 2026 · docs.postmill.ai
Pro $29 a month billed monthly 3 seats · 10 channels · 2 brand kits · 5 GB storage · Campaigns · API + MCP Read 12 Oct 2026 · postmill.ai
Pro $290 a year Yearly 3 seats · 10 channels · 5 GB storage Read 20 Sep 2026 · docs.postmill.ai
Team $99 a month billed monthly 10 seats · 30 channels · 10 brand kits · Multi-brand workspaces Read 12 Oct 2026 · postmill.ai
Team $990 a year Yearly 10 seats · 30 channels · 20 GB storage Read 20 Sep 2026 · docs.postmill.ai
Agency $249 a month billed monthly 25 seats · 100 channels · 50 competitor slots · 100 GB · Priority support Read 12 Oct 2026 · postmill.ai
Agency $2,490 a year Yearly 25 seats · 100 channels · 100 GB Read 20 Sep 2026 · docs.postmill.ai
Self-Hosted Free Free on your own hardware Full platform · AGPL-3.0 · Docker Compose Read 12 Oct 2026 · postmill.ai

Every Postmill AI plan and price →

Strong points and limits

Strong points

  • Free self-hosting on customer hardware
  • Plans cover individuals, teams, and agencies
  • Composer adapts drafts by channel
  • Scheduling includes recurring slots and retry handling
  • AI replies draw from 30 model providers

Limits

  • Starter costs $9 a month
  • AI runs on customers’ own keys
  • Agency plan costs $249 a month

Who it suits

Postmill AI suits individuals, teams, and agencies that need social content creation and publishing, with plans specifying different seat and channel capacities. Its free self-hosted option is for customers who want to run the platform on their own hardware.

Verdict

Postmill AI combines content workflows with publishing, scheduling, inbox, and reporting tools. It offers free self-hosting and monthly paid plans with stated capacities for seats and channels.

Where Specifiction places it

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