Postmill AI

What Postmill AI is

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 a month to Agency at $249 a month, with a free plan and a 30-day trial also noted.

Who it suits

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.

Limits

Starter costs $9 a 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.

Getting started

1. Open the Postmill AI website.
2. Choose the free plan or a paid monthly plan; the pricing note includes a 30-day trial.
3. For self-hosting, use your own hardware and the Docker Compose plan.
4. Connect social channels through the platform’s official OAuth connections.
5. Use your own AI provider keys for writing and replies.

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.