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How to find API key of integrated Fulfillment providers

API is a unique key of an account which a provider generates in order to allow third parties, like teeinblue, to connect and send orders to.

Hence, you need to copy and paste the API key of your account to Fulfillment Providers page, so teeinblue can identify and send orders to the correct account.

merchOne API key

Login to your merchOne account dashboard.merchone.com
Go to Stores page > Create a new store by clicking button Connect under Create your custom store

Please be sure to choose the Create custom store if you use Teeinblue to send orders to merchOne.

In this step, please enter all the information:

Once you are done, go to the Settings Page to get the API KEY

Scroll down a little bit, and you should see this section:

Copy the API Key you see there, and paste it into the teeinblue application via Teeinblue > Extras > Fulfillment Provider > merchOne

On the same page in teeinblue portal, copy the Webhook URL under API section

Go back to merchOne platform > and paste it there:

Printful API key

As of September 30th, 2022, it won’t be possible to generate new Printful API keys, and on March 30th, 2023, all existing API keys will stop working. Instead, you’ll access Printful’s API using private tokens and public apps. All Teeinblue users connecting to Printful will have to change their keys on Sep 29th. Please continue reading below to find out more on how to create your new Access Key

Login to your account at developers.printful.com/login
Navigate to Token Page > Click on the + Add new Token button
Fill in all the necessary information there.

Required information

In the Scopes section, you must enable all options to make it possible to send orders from Teeinblue to Printful

Be sure to check all the boxes

Once you are done, you will get a new Accesss Key:

Your Access Key

Go to the Teeinblue > Extras > Fulfillment Provider > Printful

Click Save
Then, click on Select a store dropdown menu. It will show you a list of stores on your Printful account. You can then select a Store you want to send orders to.

Once you have selected your Store, click Save again
You are now successfully connected to Printful!

CustomCat API key

Login to your Customcat account at app.customcat.com.
Go to My stores page > create a new store with Create API Order method.

Go to Settings page. Select the store you've just created.

Go to API tab > Copy the API key with Read/Write access.

Copy and paste it to Teeinblue > Extras > Fulfillment Providers > Customcat

Dreamship API key

Login to your Dreamship account at dreamship.com/app
Click on Settings > API page

If you don't find the "API" page, please contact Dreamship support to open access.

Find the API section

Click button "Show" to check for API key > Click button "Copy" to copy API key

Copy and paste it to Teeinblue > Extras > Fulfillment Providers > Dreamship

Next, you need to connect Webhook so Teeinblue can receive tracking code from Dreamship when an order is fulfilled.

In Teeinblue, copy the Webhook URL to the Teeinblue > Extras > Fulfillment Providers > Dreamship > Webhook URL section

Go to Dreamship > Settings > API > In the "Webhook URL", click on Add Webhook URL > paste the Webhook URL from Teeinblue > click Add:

In the Advanced Webhooks, click Enable button

Next, move to the Webhook URLs section above > Click Manage Subcriptions > Tick all the information within the popup Webhook Subscriptions > Click Save and close popup

ShineOn API key

Sign up your account at app.shineon.com.
Then, choose "Selling somewhere else"

Go to API Configuration page > Then click "Request Access" > Copy the the API key

Copy and paste the token to API key field in Teeinblue > Extras > Fulfillment Providers > Shineon

Gelato API key

Sign in to your account at dashboard.gelato.com.
Go to Developer menu > API Keys > Add API Key

Enter any name for this new API Key (eg. your store name) > Create key

Click Copy to clipboard and paste the key to API key field in Teeinblue > Extras > Fulfillment Providers > Gelato

Shirtee API key

Sign in to your account at https://dashboard.shirtee.cloud/
Go to Settings menu > My account > copy the value in Authentication API

(If you don't find "Authentication API" in your settings, please contact Shirtee support to open it for you)

Paste the key to API key field in teeinblue's Fulfillment Providers > Shirtee page.

Printify API key

Sign in to your account at https://printify.com
Click on your avatar > Connection

In API tokens, generate a new token > enter any name > choose All scopes (full access) > Generate token
Copy the API key in the blue box

Paste the key to API key field in Teeinblue > Extras > Fulfillment Providers > Printify
Click Save
Choose your store name in the Select a store > Save.

Printway API key

Register for an Printway Account
Navigate to Stores > Choose your Store's Platform

Select Shopify

Continue to click on Get the App to install the Printway App

Once you are done, go back to your Stores panel, and click on Connect APIs

Copy paste the API Key back to the App

Marketprint API key

Watch this tutorial to learn more: https://vimeo.com/939559111/32080cf90a?share=copy

Printbelle API Key

Go to https://fulfillment.printbelle.com/user/login
If you do not yet have an account, please register for one:
Enter all the necessary information:
Once you have registered for an account, simply go back to Teeinblue App > Extras > Fulfillment Providers > select Printbelle to finish the connection process

Enter your registered account via Teeinblue > Extras > Fulfillment Providers > Printbelle
You are now connected to Printbelle and can import their products as well as send orders to them!

Check out this video for a step-by-step guide on connecting the API to Printbelle, setting up a campaign, and sending orders to them.

Merchize API Key

Go to https://seller.merchize.com
If you do not yet have an account, please register for one
You may be asked a few questions to complete your registration process
After creating your account, go to Integrations > API. Copy both the Base URL and the Access Token from this page.

In this step, please be sure to select the Access Token tab, not the API Key tab.

Paste them into the App via Teeinblue > Extras > Fulfillment Providers > Merchize

If you want Teeinblue to sync the Tracking Code to your Shopify orders, copy the webhook generated by our app.

Paste it into this section on your Merchize Dashboard

Please be sure to select Events: Orders changed tracking

It should look like this once you're done

Updated on: 30/09/2025

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