Schedule Mastodon posts from one calendar
Posts (toots) on any Mastodon instance. Write once, preview it exactly as Mastodon will show it, and publish on time alongside your other networks.
- Free plan, no credit card
- API + MCP on every plan
- Flat price, no per-channel fees
- Your data is exportable
Built for Mastodon's limits
Post: 500 · Display name: 30 · Bio: 500 · Alt text: 1,500 · Attachments per post: 4. The composer enforces all of them before anything goes out.
Threads, media, alt text
Multi-part threads, up to 4 images or video per post, with alt text on every image.
Knows when it worked
Every delivery shows the live link or the exact error the network returned, with one-click retry.
Best times to post on Mastodon
| Monday–Friday | 9:00–11:00 and 20:00–22:00 local time, by instance timezone |
| Saturday–Sunday | Steady; community-driven |
General heuristics; read the full guide and test on your own account.
Also schedule
Pricing
Free
For trying Postfree on your own channels. No card.
- 3 social channels
- 15 posts / month
- 1 team member
- 1 brand workspace
- 10 AI captions / month
- Analytics & best time to post
- Auto-repost & evergreen queue
- Approval workflow
- API + MCP: let your AI assistant post
- Webhooks
- White-label client previews
Starter
For creators and solo founders.
- 5 social channels
- Unlimited posts / month
- 1 team member
- 1 brand workspace
- 100 AI captions / month
- Analytics & best time to post
- Auto-repost & evergreen queue
- Approval workflow
- API + MCP: let your AI assistant post
- Webhooks
- White-label client previews
Growth
For small teams and growing brands.
- 15 social channels
- Unlimited posts / month
- 3 team members
- 3 brand workspaces
- 500 AI captions / month
- Analytics & best time to post
- Auto-repost & evergreen queue
- Approval workflow
- API + MCP: let your AI assistant post
- Webhooks
- White-label client previews
Agency
For agencies managing many clients.
- 50 social channels
- Unlimited posts / month
- Unlimited team members
- Unlimited brand workspaces
- 2000 AI captions / month
- Analytics & best time to post
- Auto-repost & evergreen queue
- Approval workflow
- API + MCP: let your AI assistant post
- Webhooks
- White-label client previews
7-day free trial on every plan. $0 today, card required, cancel in two clicks before the trial ends and you pay nothing. Prices in USD; local currencies coming; taxes calculated at checkout.
FAQ
Can I try scheduling Mastodon posts for free?+
Yes. The Free plan needs no credit card and covers 3 channels and 15 posts a month, with API + MCP access so your AI assistant can schedule for you. Paid plans add more channels and unlimited posts, and each can start with a 7-day trial (card required, $0 today).
How does Postfree connect to Mastodon?+
Through Mastodon's official login. You approve the permissions once; the access token is encrypted and can be revoked from either side at any time.
What is the Mastodon character limit?+
500 characters for a post (Instance default; some servers allow more). The composer counts it live and warns before you schedule.
Does it post threads?+
Yes. Write several parts and they are published as a Mastodon thread at the scheduled time.