How to connect Tumblr to Postozo
Sign in with Tumblr, pick your blogs and start scheduling. This guide shows each screen in Postozo, what Tumblr asks for, and how to fix common errors.
What you need before you start
- A Tumblr account with at least 1 blog.
- For a group blog: membership that lets you post to it.
Tumblr uses a sign-in button (called OAuth). You never share your Tumblr password with Postozo.
Connect Tumblr 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 Tumblr tile and press it. Each tile also has a How to connect link that opens this guide.

If the tile says Coming soon on this server, the server you use has not added its Tumblr app keys yet. Ask the person who runs your Postozo server. On postozo.com this is done for you.
Step 2. Sign in on Tumblr
Postozo sends you to Tumblr to sign in. This screen belongs to Tumblr, so we cannot show it here. What you will see:
- Tumblr opens and asks you to log in.
- Tumblr asks if Postozo may post to your blogs. Press Allow.
Postozo checks that these permissions were given, because posting fails without them:
- Post to your blogs
You never type your Tumblr password into Postozo. Tumblr sends you back with a sign-in that Postozo stores encrypted.
Step 3. Pick your blogs
Postozo lists every blog on your Tumblr account, with your main blog marked. Tick 1 or more. Each blog becomes its own channel.

Blogs that are already connected show a green Connected label and cannot be ticked again. If your plan has a channel limit, the list shows how many you can still add, and stops you from ticking more. Press Add when you are done. Press Cancel to stop without adding anything.
Step 4. Check the new channel
Back on the Calendar, the new channel shows in the channel list on the left, with a small Tumblr badge on its picture. A message at the bottom says it is connected. You can now pick it in the post editor.

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 Tags, Status), edit time slots, move the channel to a customer, reconnect, turn it off or delete it.

Common errors and how to fix them
| What you see | What to do |
|---|---|
| "This Tumblr account has no blogs" | Create a blog on Tumblr, then press Try again. |
| Posts fail after a while | Tumblr sign-ins are renewed in the background. If you removed the app on Tumblr, reconnect. |
| "You cancelled the sign-in, or did not allow access" | You pressed Cancel or closed the Tumblr screen. Press Try again and choose Allow. |
| "Tumblr did not give Postozo every permission it needs" | A permission was turned off on the Tumblr screen. The message names it. Press Try again and leave everything turned on. |
| "This sign-in link has expired" | Sign-in links last 1 hour. Start again from Add Channel. |
| "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
A sign-in can stop working, for example when you change your Tumblr password, remove the app on Tumblr, or lose access to a blog. Postozo then marks the channel with a warning, pauses its posts, and tells you by notification and email.
- Press the 3 dots next to the channel.
- Press Reconnect channel.
- Sign in on Tumblr again with the same account.
- Postozo finds the same blog again on its own. You do not need to pick it again.
Reconnect keeps the channel, its posts, time slots and preferences. If you sign in with a different account, Postozo stops and tells you, so posts never go to the wrong account. If the blog is no longer on that account, you see a message that says so, with a Try again button.
How to disconnect Tumblr
Press the 3 dots next to the channel, then Delete. Postozo removes the channel and deletes its stored sign-in right away. Upcoming and draft posts for that channel are removed too. Posts that are already live stay on Tumblr. You need the admin or owner role in your workspace to delete a channel.
To also remove Postozo from your Tumblr account, open the connected apps settings on Tumblr and remove it there. See Tumblr help: secondary blogs.
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 Tumblr
Posts to 1 Tumblr blog. Text, up to 10 images, or 1 video. Blank lines start a new paragraph. Tags go in Settings. No follow-up comments.
Read more on the Tumblr channel page.
Tumblr help pages
More connection guides
Questions
Can I add my secondary blogs?
Yes. Every blog on the account shows in the list. Tick the ones you want.
Can I queue posts in Tumblr?
Yes. Set Status to Queue in the Tumblr settings of a post.
Does connecting Tumblr cost extra?
No. There is no extra charge per network. Each connected blog counts as 1 channel toward the channel limit of your plan.
What if the Tumblr tile says Coming soon on this server?
The server you use has no Tumblr app keys yet. The server admin adds them in Admin, Networks.
Connect Tumblr now
Create your Postozo account and add your first Tumblr channel in a few minutes.
Create your free account