Postmill AI
Postmill AI is an AI-native platform for writing, designing, scheduling, publishing, replying to, and reporting on social media content.
What Postmill AI is
Postmill AI is an AI-native platform for writing, designing, scheduling, publishing, replying to, and reporting on social media content. It lists 45 channels across social, chat, blog, and email, with integrations including X, Instagram, LinkedIn, TikTok, YouTube, Discord, Telegram, Slack, Mastodon, Reddit, and WordPress. A composer adapts one draft to each channel, providing 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 offers a visual calendar, timezone-aware recurring slots, auto-post queues, CSV bulk import, and retry after network interruptions. Daily metric snapshots and a unified inbox collect replies from 19 channels, with AI-drafted responses. The core is AGPL-3.0 open source and can be self-hosted free on customer hardware. Plans range from free access to Starter at $9 a month, Pro at 29.00 USD, Team at 99.00 USD, and Agency at 249.00 USD.
Good
- Free plan and 30-day trial
- Channel-specific drafting and previews
- Visual scheduling with recurring queues
- Unified inbox covers replies from 19 channels
- Self-hosted core is AGPL-3.0 open source
Watch out
- Starter includes only 3 channels
- Paid plans are billed monthly
- AI uses customers’ own provider keys
- Agency plan is $249 a month
Who it suits
It suits individuals, teams, and agencies managing client brands in one workspace. Self-hosting is available for organizations wanting the core on their own hardware.
Verdict
Postmill AI combines content creation, design, scheduling, publishing, inbox handling, and analytics in one service. Its free and self-hosted options broaden access, while paid tiers add seats, channels, storage, and agency capacity.
Plans and prices
From Postmill AI's own pricing page, checked 12 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| Starter | $9 a month | 1 seat · 3 channels · 100 posts/mo · billed monthly |
| Pro | $29 a month | 3 seats · 10 channels · 2 brand kits · 5 GB storage · Campaigns · API + MCP · billed monthly |
| Team | $99 a month | 10 seats · 30 channels · 10 brand kits · Multi-brand workspaces · billed monthly |
| Agency | $249 a month | 25 seats · 100 channels · 50 competitor slots · 100 GB · Priority support · billed monthly |
| Self-Hosted | Free | Full platform · AGPL-3.0 · Docker Compose · Free on your own hardware |
The facts
Each one read from Postmill AI's own pages, with the date it was checked.
What it does
- 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.checked 12 Oct 2026
- Analytics and inbox
- Postmill says it snapshots metrics daily and brings replies from 19 channels into one inbox with AI-drafted responses.checked 12 Oct 2026
- Automation
- The Agency section lists API, SDK, webhooks, Zapier, Make, n8n, and MCP.checked 12 Oct 2026
- Channels
- The maker lists 45 channels across social, chat, blog, and email.checked 12 Oct 2026
- Composer
- One draft can be tailored by channel with previews, format overrides, brand-voice rewrites, and preflight validation.checked 12 Oct 2026
- Design
- The design studio includes a canvas, layers, brand kits, a five-track video timeline, and 36 generation studios.checked 12 Oct 2026
- Integrations
- Listed channel integrations include X, Instagram, LinkedIn, TikTok, YouTube, Discord, Telegram, Slack, Mastodon, Reddit, WordPress, and others.checked 12 Oct 2026
- Intended users
- Plans are presented for an individual, a team, and agencies managing client brands in one workspace.checked 12 Oct 2026
- 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.checked 12 Oct 2026
- Paid from
- 9checked 20 Sep 2026
- Product
- Postmill is an AI-native social media management platform for writing, designing, scheduling, publishing, replying, and reporting.checked 12 Oct 2026
- Scheduling
- Scheduling includes a visual calendar, timezone-aware recurring slots, auto-post queues, CSV bulk import, and automatic retry after network hiccups.checked 12 Oct 2026
- Security
- The homepage states that channel connections use official OAuth and that no passwords are stored.checked 12 Oct 2026
- Security controls
- The homepage lists Google, GitHub, and OIDC SSO, encrypted secrets at rest, per-device session control, and platform-only official OAuth.checked 12 Oct 2026
- Support
- Priority support is included in the Agency plan.checked 12 Oct 2026
Money
- Free plan
- Yeschecked 20 Sep 2026
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