Dynosend API Authentication

How to authenticate Dynosend API requests: one Bearer API key plus a connectionId. MindCloud stores your API key securely — set it once, never resend it.

Every Dynosend API request through MindCloud needs two things: a MindCloud API Key and a connectionId for your Dynosend account. This page covers both, plus exactly how to send them, so you do not need to visit any other page to get authenticated.

Steps to authenticate

Create a MindCloud account at app.mindcloud.co if you do not already have one.
Generate a MindCloud API Key in API Keys. This is the Bearer token you send on every request. Keep it on your server.
Create a Dynosend connection in Connections. Dynosend uses an API key. You generate the key in your Dynosend account, then paste it in when you create the connection — MindCloud stores it securely and never returns it in a response.
Copy the connection’s connectionId — you will send it on every request alongside your MindCloud API Key.

How requests are authenticated

Authentication has two layers. Your MindCloud API Key authenticates the request to MindCloud, sent as a Bearer token in the Authorization header. The connectionId selects the connected Dynosend account that should run the action. MindCloud stores and refreshes the Dynosend credentials behind that connection, so you never send provider tokens with your requests.

Pass connectionId in the query string for GET and DELETE actions, and in the JSON body for POST, PUT, and PATCH actions.

For example, calling Check Blacklist with an Dynosend connection looks like this:

curl --request POST \
  --url "https://connect.mindcloud.co/v2/universal/apps/dynosend/actions/check-blacklist/run" \
  --header "Authorization: Bearer $MINDCLOUD_API_KEY" \
  --header "Content-Type: application/json" \
  --data '{
  "connectionId": "$CONNECTION_ID",
  "arguments": {}
}'

The Authorization: Bearer <your MindCloud API Key> header authenticates you to MindCloud; the connectionId tells MindCloud which Dynosend account to run the action against. Missing or invalid Authorization returns 401, and a missing or mismatched connectionId returns 400.

Connect Dynosend with an API token

You need a Dynosend account and access to the Dynosend dashboard.

Sign in to Dynosend
Open the Dynosend login page and sign in to your account.
Login
Find your authentication token
In the Dynosend dashboard, open the page that shows your API base URL and authentication key, then copy the authentication token. Dynosend’s official API docs confirm that this information is available inside the dashboard, but they do not publish the exact dashboard breadcrumb.
Paste the token into the connection
Return to MindCloud and paste the copied Dynosend token into the API key field for this connection.

Keep your key safe

Keep your MindCloud API Key on your server; do not ship it in browser code, mobile apps, public repositories, or logs. Anyone with the key can call the Universal API as your MindCloud account, across every connection you have created.