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How to connect Mastodon to Postozo

Paste a few details from Mastodon and start scheduling. This guide shows where to find each detail, each screen in Postozo, and how to fix common errors.

Part of the connection guides. Screenshots show Postozo with placeholder names like "Your Page". The Mastodon screens themselves are described in words.

What you need before you start

  • A Mastodon account on any server.
  • An access token from an application you create in your server settings.

Mastodon connects with details you copy from Mastodon (a key, token or app password). Postozo checks them with Mastodon before saving and stores them encrypted.

Connect Mastodon step by step

Step 1. Open Add Channel

Sign in to Postozo. On the Calendar, press Add Channel at the top of the channel list. A window opens with a tile for every network. Find the Mastodon tile and press it. Each tile also has a How to connect link that opens this guide.

The Postozo Add Channel window with the Mastodon tile marked
The Add Channel window. The Mastodon tile is marked.

If the tile says Coming soon on this server, the server you use has not added its Mastodon app keys yet. Ask the person who runs your Postozo server. On postozo.com this is done for you.

Step 2. Fill in your Mastodon details

A form opens. It asks for 2 details: Server, Access token. Under each field, press Where do I find this? to see the exact steps. We copy those steps below.

The Connect Mastodon form in Postozo with the help steps open
The Mastodon form. The help under a field shows where to find the value.

Server

  1. Look at your full handle, for example @anna@mastodon.social.
  2. The part after the second @ is your server.
  3. Type it with https:// in front, for example https://mastodon.social.

Source: docs.joinmastodon.org help page

Access token

  1. On your Mastodon server website, open Preferences, then Development.
  2. Press New application and name it Postozo.
  3. Tick only these scopes: write:statuses, write:media and read:accounts.
  4. Press Submit, open the new application and copy "Your access token".

Source: docs.joinmastodon.org help page

Step 3. Press Connect

Postozo checks the details with Mastodon before it saves anything. If something is wrong, the form stays open and shows what to fix. Nothing is saved until the check passes. The details are stored encrypted.

Step 4. Check the new channel

Back on the Calendar, the new channel shows in the channel list on the left, with a small Mastodon badge on its picture. A message at the bottom says it is connected. You can now pick it in the post editor.

The Postozo Calendar with the new Mastodon channel in the channel list
The connected Mastodon channel in the list. Names are placeholders.

Step 5. Set your preferences

Press the 3 dots next to the channel to open its menu. From here you can set Preferences (default settings for every new post on this channel, like Visibility, Content warning), edit time slots, move the channel to a customer, reconnect, turn it off or delete it.

The channel menu for a Mastodon channel in Postozo
The channel menu, with Preferences, Edit Time Slots and Reconnect channel.

Common errors and how to fix them

What you seeWhat to do
"That server did not accept the access token"Copy "Your access token" again from Preferences, Development, and check the server address.
Posts with images failThe application needs the write:media scope. Edit the application, tick it, and connect again with the new token.
A red message under a fieldThe value does not have the right format. The message says what it should look like.
"We could not reach Mastodon right now"Mastodon did not answer. Wait 1 minute and press Connect again.
"Your plan allows N channels"You reached the channel limit of your plan. Remove a channel you do not use, or upgrade in Billing.

How to reconnect

If the Mastodon details stop working (for example you deleted the key or changed the password), Postozo marks the channel with a warning and pauses its posts. Press the 3 dots next to the channel, then Reconnect channel. The same form opens. Paste the new details and press Reconnect. The channel keeps its posts, time slots and preferences.

How to disconnect Mastodon

Press the 3 dots next to the channel, then Delete. Postozo removes the channel and deletes its stored details right away. Upcoming and draft posts for that channel are removed too. Posts that are already live stay on Mastodon. You need the admin or owner role in your workspace to delete a channel.

To cut access on the network side as well, delete the key, token or app password you created there.

Want to pause instead? Choose Disable Channel in the same menu. Its posts wait until you turn it back on.

What you can post on Mastodon

Usually max 500 characters (depends on the server). Up to 4 images or 1 video. Follow-up comments become replies.

Read more on the Mastodon channel page.

More connection guides

See all 28 connection guides.

FAQ

Questions

Which server address do I type?

The part after the second @ in your handle, with https:// in front.

How long is the post limit?

Most servers allow 500 characters. Postozo reads your server limit when you connect.

Does connecting Mastodon cost extra?

No. There is no extra charge per network. Each connected account counts as 1 channel toward the channel limit of your plan.

What if the Mastodon tile says Coming soon on this server?

The server you use has no Mastodon app keys yet. The server admin adds them in Admin, Networks.

Connect Mastodon now

Create your Postozo account and add your first Mastodon channel in a few minutes.

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