Postkey vs Postiz
Postkey vs Postiz: the Postiz alternative with DM automation
Postkey is the most agentic DM automation tool. Postiz is an open-source scheduler with an MCP server for posts. Postkey's MCP server also builds DM automations and answers your inbox, so an assistant can run the whole loop: the post, the comments and the DMs.
The short answer
Postkey is the most agentic DM automation tool: one MCP connection lets your AI assistant build and switch on DM automations, answer the inbox, and schedule posts to 10 networks, across every account on your plan. Postiz schedules to many more networks and can be hosted for free, and its 13-tool MCP server makes and schedules posts. We found no DM automation, comments inbox or AI replies on its pages. Postkey's assistant builds comment-to-DM automations, answers DMs and schedules to 10 networks.
Updated October 27, 2026 (Postiz's pages)
What an AI agent can do in each
Postkey is the most agentic DM automation tool: one MCP connection lets your AI assistant build and switch on DM automations, answer the inbox, and schedule posts to 10 networks, across every account on your plan. Here is the same list for Postiz, from its own pages on October 27, 2026.
| Postiz | Postkey | |
|---|---|---|
| MCP server | Yes, 13 tools | Yes, up to 52 tools |
| Builds and switches on DM automations | No: we found no DM automation (searched October 27, 2026) | Yes, and switching on waits for your yes |
| Reads and answers the DM inbox | Not listed | Yes, each reply waits for your yes by default |
| Schedules and publishes posts | Yes, to X, LinkedIn, Reddit, Instagram, Facebook, Threads, YouTube, Google My Business, TikTok, Pinterest, Discord, Slack, Mastodon, Bluesky, Telegram, Medium, WordPress and and more (34 platforms in Postiz's words) | Yes, to Instagram, TikTok, Facebook, Telegram, LinkedIn, YouTube, Threads, Pinterest, Bluesky and Google Business |
| Accounts one connection reaches | All the connected accounts in the workspace | Every account on your plan, up to 15 |
| Plans that include it | Every plan, and self-hosted | Every plan, inside the plan's limits |
| Sign-in | An API key, or OAuth | OAuth 2.1 with PKCE, or an agent key |
| In the official MCP Registry | Not found | Not yet |
"Not listed" and "None found" mean we could not find it on Postiz's own pages on October 27, 2026, not a statement by Postiz.
Sources: Postiz docs: MCP introduction
Why Postkey is the most agentic DM automation tool
Postkey's MCP server can build, edit and switch on automations. An agent can do the whole job:
- Build, edit and switch on DM automations: comment to DM, keyword DMs, follow to unlock, collecting emails.
- Read the inbox, draft replies and send them once you say yes.
- Write, schedule and publish posts, and set the DM keyword each post's comments reply to.
- Find and tag contacts, and report how posts and automations did.
- Up to 52 tools in one MCP server, with OAuth sign-in or an agent key, and a skill file that teaches the agent the rules.
- Approvals, limits and protection from instructions hidden in DMs built in, so you can let an agent run it.
Side by side
| Postiz | Postkey | |
|---|---|---|
| Comment to DM and keyword DMs | Not listed | Yes |
| Follow to unlock | Not listed | Yes |
| Collect emails in the DM | Not listed | Yes |
| Shared inbox | Not listed | Yes |
| AI replies | Not listed | From Create |
| DM channels | None found (searched October 27, 2026) | Instagram and Messenger |
| Post scheduler | X, LinkedIn, Reddit, Instagram, Facebook, Threads, YouTube, Google My Business, TikTok, Pinterest, Discord, Slack, Mastodon, Bluesky, Telegram, Medium, WordPress and and more (34 platforms in Postiz's words) | Instagram, TikTok, Facebook, Telegram, LinkedIn, YouTube, Threads, Pinterest, Bluesky and Google Business |
| Instagram accounts | "A channel is one connected social account: one X profile is one channel. Plans are tiered by channels, not posts." | Up to 15 on one plan, sharing one contact allowance |
| How usage is billed | A flat price per plan, tiered by channels, with unlimited posts; AI images and videos are monthly credits. | Plans include contacts each month, shared by all the plan's accounts; extra contacts are charged, never cut off |
Postiz is open source: free if you host it yourself. Every cloud plan has a 7-day trial, and yearly billing is about 20% off. Postiz's Instagram docs say it has no agent that "watches for incoming comments and replies on your behalf".
Sources: postiz.com/pricing, Postiz docs: plans and limits, Postiz docs: Postiz Cloud, Postiz docs: posting rules by platform, Postiz docs: Instagram, Postiz docs: the AI agent, Postiz docs: Plugs, Postiz docs: MCP introduction
What Postkey does after the post goes out
- Comment to DM: everyone who comments your keyword gets the link by DM, with a public reply.
- Follow to unlock and email capture inside the DM.
- A shared inbox for Instagram and Messenger DMs, with AI replies from Create.
- The post and its keyword are scheduled together, so the DMs start when the post goes live.
What each costs
Postiz's list prices in US dollars, as its pricing page showed them on October 27, 2026, then Postkey's in US dollars. Monthly billing unless it says yearly.
| Plan | A month | Billed yearly | Accounts | Limit |
|---|---|---|---|---|
| Postiz Standard | $29 | Not shown | 5 | 5 channels, unlimited posts, no team members (less a month billed yearly) |
| Postiz Team | $39 | Not shown | 10 | 10 channels, unlimited team members |
| Postiz Pro | $49 | Not shown | 30 | 30 channels, AI images and videos each month |
| Postiz Ultimate | $99 | Not shown | 100 | 100 channels, more AI images and videos |
| Postkey Free | $0 | Free | 2 | 25 contacts a month |
| Postkey Essential | $15 | $144 a year | 2 | 250 contacts a month |
| Postkey Create | $34 | $300 a year | 5 | 2,500 contacts a month, Postkey AI |
| Postkey Pro | $85 | $708 a year | 10 | 7,500 contacts a month, Postkey AI |
| Postkey Advanced | $175 | $1428 a year | 15 | 25,000 contacts a month, Postkey AI |
List prices before tax. Plans change; check each pricing page before you buy.
Where Postiz is a good fit
- Open source and free to host yourself, with no channel limit when you do.
- Posts to 34 platforms, far beyond Instagram.
- An MCP server, a CLI, a public API and webhooks on every plan, plus its own AI agent.
- Unlimited posts on every plan, and team members from Team up.
- AI images and videos, and YouTube clipping into vertical shorts.
Where Postkey is the better fit
- You want comments on your Instagram posts to turn into DMs with your link.
- You want your AI assistant to answer DMs and build automations, not only post.
- You want a hosted product with Meta's official DM API set up for you, with nothing to run yourself.
- You want sends, replies and switch-ons to wait for your yes by default.
Switching from Postiz
- 01
Connect your accounts to Postkey with each network's own sign-in.
- 02
Move your scheduled posts: ask your assistant to recreate them in Postkey, or add them to your posting schedule yourself.
- 03
Add a comment keyword and a link to the posts that should send a DM, and switch on the automation with the post.
Questions
We found none (searched October 27, 2026). Postiz's own Instagram docs say there is no agent that "watches for incoming comments and replies on your behalf", and its automations repost and comment on X, LinkedIn, Bluesky and Threads.
Yes, 13 tools on every plan and on self-hosted. They create, schedule and publish posts; Postiz's docs say there is no comment tool over MCP.
Postiz is open source, so hosting it yourself is free. Its cloud plans are paid, with a 7-day trial. Postkey has a Free plan.
Not yet. Postiz posts to 34 platforms; Postkey schedules to Instagram, TikTok, Facebook, Telegram, LinkedIn, YouTube, Threads, Pinterest, Bluesky and Google Business, and automates the DMs.
Yes. Postkey's Free plan has 25 contacts a month and 5 scheduled posts a week, and paid plans start with a free trial.