You can quickly find your Fulfillment Provider below:

• Merchone
• Printful
• Customcat
• Dreamship
• Shineon
• Gelato
• Shirtee
• Printify
• Printway
• Marketprint
• Printbelle
• Merchize

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

• 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

• 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.

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

• Once you are done, you will get a new Accesss 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

• 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

• 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!

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.

• 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

• It should look like this once you're done

Updated on: 29/10/2025