Postmill AI is a social media management platform for writing, designing, scheduling, publishing, replying, and reporting. The maker lists 45 channels across social, chat, blog, and email. A single draft can be tailored to each channel with previews, format overrides, brand-voice rewrites, and preflight validation. 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; AI runs on customers’ own keys, without credit packs, AI seat fees, or markup. The homepage says channel connections use official OAuth and that passwords are not stored. It also lists SSO options, encrypted secrets at rest, and per-device session control. The core is AGPL-3.0 open source; self-hosting is free on the customer’s hardware. Paid monthly plans range from Starter at 9.00 USD per month to Agency at 249.00 USD per month, with a free plan and a 30-day trial also noted.
Who it is for
Postmill AI suits individuals, teams, and agencies that want to bring content creation, scheduling, publishing, replies, and reporting into one platform. Its self-hosted option may suit users who want to run the open-source core on their own hardware.
What is good
- Maker lists 45 channels across social, chat, blog, and email.
- One draft can be tailored by channel with previews and validation.
- Scheduling includes recurring slots, queues, CSV import, and retries.
- Daily metric snapshots and replies from 19 channels share one inbox.
- Core is AGPL-3.0 open source and self-hosting is free on customer hardware.
What to know first
- Starter is limited to 1 seat, 3 channels, and 100 posts per month.
- Self-hosting requires the customer’s own hardware.
- The listed social channel count is 3.0.
Verdict
Choose Postmill AI if you want AI-assisted content work alongside scheduling, publishing, replies, and reporting, with plans for individuals through agencies. Look elsewhere if Starter’s 1-seat, 3-channel, and 100-post monthly capacity does not fit, or if you do not want to self-host and need the free self-hosted option.
Get started with Postmill AI
- Open the Postmill AI website.
- Choose the free plan or a paid monthly plan; the pricing note includes a 30-day trial.
- For self-hosting, use your own hardware and the Docker Compose plan.
- Connect social channels through the platform’s official OAuth connections.
- Use your own AI provider keys for writing and replies.
What the free plan stops at
Starter costs 9.00 USD per month and includes 1 seat, 3 channels, and 100 posts per month. The free Self-Hosted plan runs on the customer’s own hardware; its listed plan includes the full platform and Docker Compose.
Questions about Postmill AI
Does Postmill AI have a free plan?
Yes. Self-Hosted is free on your own hardware and includes the full platform, AGPL-3.0, and Docker Compose.
How much do the paid plans cost?
Starter is 9.00 USD per month, Pro is 29.00 USD per month, Team is 99.00 USD per month, and Agency is 249.00 USD per month. The pricing note also includes a 30-day trial.
Which platforms are listed?
The listed platforms are API, self-hosted, and web.
Is Postmill AI open source?
Yes. The maker says the core is AGPL-3.0 open source.
Which AI providers does it support?
The maker says writing and replies use 30 model providers, with AI running on customers’ own keys.
What integrations are listed?
Channel integrations include X, Instagram, LinkedIn, TikTok, YouTube, Discord, Telegram, Slack, Mastodon, Reddit, and WordPress, among others. The Agency section also lists API, SDK, webhooks, Zapier, Make, n8n, and MCP.
Postmill AI plans and pricing
All plansCompared on social media management tools
- Free plan
- Yes
- Paid from
- $9/mo
- AI content generation
- Yes
- AI content repurposing
- Yes
- Automatic publishing
- Yes
- Approval workflows
- Yes
- Social channels
- 3 channels
- Analytics depth
- advanced
