How to connect Unione to OpenClaw
Connect Unione to OpenClaw with ClawLink: paste your Unione key once and 32 tools work from chat. No MCP server to run, nothing stored on your machine.
UnioneAPI KEYMCPUniOne is an email delivery service offering a versatile Web API and SMTP API for sending transactional and marketing emails.. Once connected, OpenClaw can read and act on Unione from chat — pairing, token refresh, and tool wiring handled for you.
The usual route to Unione access for OpenClaw is an MCP server you configure and keep running, plus your own OAuth app or API keys. ClawLink gives OpenClaw a more practical Unione setup: install one ClawHub skill, connect Unione in the browser, and OpenClaw can call real Unione actions from any chat surface with no auth, token refresh, or tool wiring to build yourself.
Setup
It takes three steps to connect OpenClaw to Unione.
1Install the plugin
Paste the setup prompt into OpenClaw, or install from the terminal and ask OpenClaw to pair:
openclaw plugins install clawhub:clawlink-plugin- 2
Connect Unione
Paste your API key in the dashboard.
- 3
Use it from chat
Ask OpenClaw: "What can you do with Unione?"
Install by command
The setup prompt above does all of this in one paste. By hand, it is one install command plus a browser approval:
openclaw plugins install clawhub:clawlink-pluginThen ask OpenClaw to set up ClawLink. It starts browser pairing and prints an approval link — open it, approve the device, return to the chat, and say done. Finally, connect Unione in the ClawLink dashboard — paste your Unione API key once.
Verify the connection by asking OpenClaw:
Use Unione to email balance and walk me through the result in plain English.
Using a different agent?
The OpenClaw plugin is one client of ClawLink's MCP server. Claude Code, Cursor, Codex, or any agent that can run a shell command pairs with the same ClawLink account through the CLI:
npx -y @useclawlink/cli loginlogin opens the same browser approval and stores a credential locally. Once Unione is connected in the dashboard, that agent calls the same 32 Unione tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.
Unione MCP for OpenClaw
Looking for a Unione MCP server for OpenClaw? ClawLink connects Unione to OpenClaw and exposes 32 Unione tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using Hermes instead? The Hermes Unione integration works the same way.
What the OpenClaw Unione integration can do
32 Unione tools are ready for OpenClaw once the account is connected. The 27 below are the ones people reach for most; your agent can call all 32.
27 of 32 Unione tools for OpenClaw
| Tool | What it does |
|---|---|
Email balance unione_email_balance | Retrieve current account balance |
Email event get unione_email_event_get | Retrieve details of a specific email event by its ID |
Email get unione_email_get | Retrieve detailed information about a specific email send job |
Email list unione_email_list | Export email events within a specified time frame |
Email smtp unione_email_smtp | Retrieve SMTP server details and credentials |
Email statistics unione_email_statistics | Retrieve email sending statistics over a specified time range |
Email validate batch unione_email_validate_batch | Validate multiple email addresses in a batch |
Email webhook types unione_email_webhook_types | Retrieve supported email webhook event types |
Event dump create unione_event_dump_create | Create an asynchronous CSV event dump |
Event dump list unione_event_dump_list | Retrieve the full list of event dumps |
Get event dump unione_get_event_dump | Retrieve the status and download URLs of an event dump |
Get suppression unione_get_suppression | Check if an email is suppressed and retrieve the reason and date |
Get template unione_get_template | Get template properties by ID |
Get webhook unione_get_webhook | Retrieve webhook configuration by its URL |
Suppression list unione_suppression_list | Return the suppression list since a given date |
Tag list unione_tag_list | Retrieve all user-defined tags |
Template list unione_template_list | List email templates |
Email resend unione_email_resend | Resend a previously sent email by its job ID |
Email resubscribe unione_email_resubscribe | Resubscribe a recipient who previously unsubscribed |
Email resume unione_email_resume | Resume a paused transactional email by its job ID |
Email validate retry unione_email_validate_retry | Retry an email validation request |
Schedule email unione_schedule_email | Schedule a transactional email up to 24 hours ahead |
Template set unione_template_set | Set or update an email template |
Webhook set unione_webhook_set | Set or edit a webhook event notification handler |
Email cancel unione_email_cancel | Cancel a scheduled transactional email by its job ID |
Email domain unione_email_domain | Manage sender domains in UniOne |
Email unsubscribe unione_email_unsubscribe | Unsubscribe an email from future emails |
Try it: find the Unione tool you need
Browse the 27 Unione tools
Click any tool to see exactly what OpenClaw can do and copy a ready-to-use prompt.
Example prompts
Use Unione to email balance and walk me through the result in plain English.
Use Unione to email event get and walk me through the result in plain English.
Use Unione to email get and walk me through the result in plain English.
Use Unione to email list and walk me through the result in plain English.
ClawLink vs. building it yourself
The alternative to ClawLink is usually manual API key setup plus your own token handling, permission troubleshooting, and tool plumbing for OpenClaw. That is fine if you want to build and maintain the integration yourself. Most teams just want Unione working from chat.
| Manual | ClawLink | |
|---|---|---|
| Credential handling | Collect, validate, store, and rotate the Unione API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected Unione account becomes available to the agent without you building credential management. |
| Ongoing maintenance | You own refresh logic, permission debugging, environment config, and every provider-specific edge case for Unione. | ClawLink handles the repetitive integration plumbing so your team can focus on the workflow instead of the infrastructure. |
| Agent usability | You still need to expose the right Unione actions to the runtime in a format your agent can reliably use. | 32 tools for Unione are already exposed through ClawLink, so the agent can read and act from chat immediately. |
ClawLink vs. Composio
Composio also exposes Unione to AI agents. It is developer infrastructure: Python and TypeScript SDKs, an MCP server, and a catalog past 1,000 apps, aimed at teams shipping agent products. ClawLink is built for OpenClaw users instead. You install the plugin once, connect Unione in the browser, and the 32 tools above work from chat. There is no SDK and no config file, and the Unione key you paste at setup is stored server-side rather than kept in your environment. Choosing between them? Read the full Composio alternatives comparison.
Troubleshooting
OpenClaw installed the Unione skill but can't call the tools
The ClawHub skill teaches OpenClaw about Unione, but the calls run through the ClawLink plugin and your connected account. Make sure Unione is connected in the dashboard, then start a fresh chat so OpenClaw reloads the tool catalog. If OpenClaw runs as a persistent gateway, restart it so the new tools register.
Connection succeeds but no tools appear
Reconnect Unione from the dashboard, then start a fresh chat if the runtime still has the old tool catalog loaded.
"Tool schema not loaded yet" error when calling Unione tools
Unione tool schemas load on demand the first time a tool runs and are cached after that, so this error usually clears on its own: wait a few seconds and retry the same request. If every Unione call keeps failing with it in a fresh chat, reconnect from the dashboard, and contact support if it still persists — that pattern points to a configuration problem on our side, not something you can fix by reconnecting again.
Unione returns 403 or "permission denied" on one action while others work
Two usual causes. The connected account may not have access to the specific workspace, inbox, store, or project in the request — check that first. If access looks right, the agent may have sent a placeholder value (like "YOUR_ID" or an example id from documentation) instead of a real one: ask it to run a list or search tool first, then retry the action with a real id from those results. Most failures at this stage are one of these two, not ClawLink bugs.
API key setup works but results look incomplete
Double-check that the API key for Unione has the right scopes or account access. A valid key can still be too limited for some reads or writes.
FAQ
Is there a OpenClaw Unione integration?
Yes. ClawLink is the fastest way to connect OpenClaw to Unione: link your Unione account once in the browser and OpenClaw can call the Unione API through 32 ready-made tools — no custom code or token handling.
How do I add Unione to OpenClaw with ClawLink?
Paste the setup prompt from this page into OpenClaw. It installs the ClawLink Unione skill from ClawHub, then you click Connect in the dashboard to authorize Unione. OpenClaw calls the tools from the next message — no config files, and the Unione key you paste is stored server-side instead of in your environment.
How long does it take to connect Unione to OpenClaw?
About two minutes. Sign in, click Connect next to Unione in the dashboard, authenticate, and OpenClaw can use it from the next chat message.
Why use ClawLink instead of wiring Unione up myself?
The alternative to ClawLink is usually manual API key setup plus your own token handling, permission troubleshooting, and tool plumbing for OpenClaw. That is fine if you want to build and maintain the integration yourself. Most teams just want Unione working from chat.
OpenClaw installed the Unione skill but can't call the tools
The ClawHub skill teaches OpenClaw about Unione, but the calls run through the ClawLink plugin and your connected account. Make sure Unione is connected in the dashboard, then start a fresh chat so OpenClaw reloads the tool catalog. If OpenClaw runs as a persistent gateway, restart it so the new tools register.
