Send transactional and bulk email through Elastic Email, and manage its contacts, lists, templates, campaigns, suppressions and statistics.
Elastic Email ships in the w6w first-party pack. It declares 20 actions, 3 health checks, and the host runs its code in a sandbox that never sees the credential.
io.w6w.elastic-emailElastic Email is an email delivery and email marketing platform. This app connects a workflow to an Elastic Email account over its v4 API.
Send a transactional email (to, cc, bcc, HTML and plain-text bodies, merge fields, a stored template, attachments already uploaded to the account) or a bulk merge send with per-recipient fields, then follow the delivery with the transaction status. Add, read, list and delete contacts, manage lists and their members, browse templates and campaigns, review and clear suppressions, and read account-wide send statistics.
Connect with an API key from Settings > Manage API Keys; the key’s access level decides which actions it may run.
Three routes to the same 20 actions. The Workflow tab is generated from Elastic Email's own manifest and carries its real ids, so it is copy-pasteable; the Code and CLI examples are the same call for any action on any app, so every app-specific value in them is a blank you fill in.
campaign-list List campaigns, optionally filtered by a name fragment. Limited to 1000 results.
contact-add Add a contact, optionally into one or more lists. Elastic Email's endpoint takes an array and answers the stored contacts; this sends one and returns it.
contact-get Load one contact by email address, with status, custom fields and send activity.
email-send Send one transactional email. To, CC and BCC recipients all receive the same message and the To/CC addresses see each other. Use Send Bulk Email for per-recipient merge sends.
email-send-bulk Send a merge email to many recipients. Each recipient receives a separate message, personalised with their own `fields`, and cannot see the others.
email-status Delivery status of a send, by the TransactionID a send action returned: counts of sent, delivered, opened, clicked, bounced and unsubscribed, plus the addresses behind each when the matching option is switched on.
list-add-contacts Add EXISTING contacts to a list, by email or by a segment rule. Unknown emails are not created; use Add Contact for that.
list-remove-contacts Remove contacts from a list (the contacts themselves are kept), by email or by a segment rule.
suppression-delete Remove an address from the suppression list so it can be mailed again.
suppression-get Look up why one address is suppressed (error code, friendly message, date).
suppression-list List suppressed addresses (bounces, complaints, unsubscribes) with the reason.
A workflow step names the app and the action, and the editor fills in the
connection when you pick one. This is the Step shape from the
workflow spec, carrying Elastic Email's real ids.
{
"manifestVersion": "2",
"name": "elastic-email-example",
"steps": [
{
"id": "campaign-get",
"uses": {
"app": "io.w6w.elastic-email",
"action": "campaign-get",
"connection": "conn_YOUR_CONNECTION_ID"
},
"with": {
"name": "<name>"
}
}
]
}campaign-get campaign-list contact-add contact-get contact-list +15 more actions available
Every app-specific value here is a blank you have to fill in. An
app action is reached through the connection that authenticates it, so the
address is a connection id, not the app id — and connections belong to your account,
so a public page cannot know yours. Create one for Elastic Email, then fill in
the three blanks: conn_YOUR_CONNECTION_ID, the action key, and the
parameters that action declares. The call itself is real — the shape is transcribed
from the studio's own snippet builder, which prints the same kind of blanks — but
nothing in it is specific to Elastic Email. The Workflow tab is where this app's
real ids are.
npm install @w6w/sdkyarn add @w6w/sdkpnpm add @w6w/sdkdeno add npm:@w6w/sdkimport { W6wClient, isActionRun } from "@w6w/sdk";
// Reads W6W_BASE_URL and W6W_TOKEN from the environment when omitted.
const client = new W6wClient();
const envelope = await client.run({
urn: "conn_YOUR_CONNECTION_ID",
action: "campaign-get",
payload: {
name: "<value>",
},
});
if (isActionRun(envelope)) console.log(envelope.value); npm install -g @w6w/cli w6w run conn_YOUR_CONNECTION_ID --action campaign-get --payload '{"name":"<value>"}' Give an AI agent Elastic Email — without giving it Elastic Email's credentials. One MCP endpoint exposes every app, function and workflow the caller is entitled to, as tools it can discover and run. Access is granted per team while we onboard.
One tool call{
"name": "w6w_invoke",
"arguments": {
"ref": "app:io.w6w.elastic-email#campaign-get",
"input": {
"name": "<name>"
}
}
}
Every tool names its target with a single ref. The
app: form above doesn't name a connection at all — the
host resolves which of the caller's Elastic Email connections to sign
with, and refuses rather than guesses when the answer is ambiguous.
The token is attached host-side, at the moment of the call. It is never a tool argument, never in the model's context, and never in a transcript — so a prompt injection has nothing to exfiltrate.
Tools are derived per end user from what that person has actually connected and is entitled to — not one shared bot identity carrying the union of everyone's access.
Multi-step work runs on the workflow engine and returns a run handle the agent can poll — retries, branching and state survive the conversation that started them.
Elastic Email's declared health checks are on the surface too, so an agent can tell "the vendor is down" from "your credential expired" before it burns a retry on either.
The MCP surface is part of the hosted platform. Elastic Email itself is MIT, and the runtime that executes it is source-available (FSL).
Elastic Email declares its own checks, so its health is a property of the app rather than something the host guesses at.
The `API.ELASTICEMAIL.COM` component on Elastic Email's Statuspage. The web app, SMTP and inbound components are reported as detail but never drive the verdict.
Unauthenticated GET https://api.elasticemail.com/v4/statistics. HTTP 400 with Elastic Email's JSON `{"Error": …}` passes — it proves the API and its auth layer are answering. Credential validity is the derived `auth:*` check's job.