Email integration
Let an agent send email with a ceiling on how many people it can reach. Every recipient counts against the limit, a repeated request sends nothing twice, and a send is confirmed from Resend's own record.
Connect
bound to api.resend.com
What you create
Connecting allows nothing by itself. No API returns the credential afterwards, to you, to the console or to an agent, and Anlyon refuses to send it anywhere but api.resend.com.
Operations
Each one is a named tool, off until you switch it on, and Anlyon makes every call with the credential your agent never sees. Reads return what Resend answers and change nothing. Writes count against a limit you set, can wait for a person, and are read back from Resend wherever it allows.
Reads
resend-list-emails
List sent and scheduled emails, newest first: id, from, to, subject, created_at, last_event and scheduled_at, without bodies or tags (use get-email). 20 per page; when has_more is true, pass the last email's id as after for the next page.
resend-get-email
Get one sent or scheduled email by id: from, to, cc, bcc, subject, html and text bodies, tags, last_event (for example delivered, bounced, scheduled) and scheduled_at. A long body can be cut at the response limit.
resend-list-domains
List the account's sending domains with their verification status, region and capabilities. 20 per page; when has_more is true, pass the last domain's id as after for the next page.
resend-get-domain
Get one domain by id: its status, tracking settings, capabilities and the DNS records (SPF, DKIM, tracking) with each record's verification status.
resend-list-contacts
List contacts, optionally only those in one segment: id, email, first and last name, created_at and whether they unsubscribed. 20 per page; when has_more is true, pass the last contact's id as after for the next page.
resend-get-contact
Get one contact by id or by email address: name, whether they unsubscribed from broadcasts, created_at and custom properties.
resend-list-segments
List the account's segments (the groups of contacts broadcasts are sent to): id, name and created_at. 20 per page; when has_more is true, pass the last segment's id as after for the next page.
resend-get-segment
Get one segment by id: its name and created_at. Use list-contacts with segment_id for its members.
resend-list-contact-segments
List the segments one contact belongs to. 20 per page; when has_more is true, pass the last segment's id as after for the next page.
Writes
resend-send-email
Send one email from an address on the sending domain fixed at install, to up to 50 recipients, with a subject and an html or text body. Counted in emails, one per recipient across to, cc and bcc; Resend's idempotency key and a read-back of the sent email grade the receipt. A sent email cannot be recalled.
Read back
Read back from Resend by Anlyon's own Resend adapter.
resend-reschedule-email
Move one scheduled email to a new send time, an ISO 8601 time at most 30 days ahead. Only an email that is still scheduled can be changed.
email_idscheduled_at
Acknowledged
Sent once and acknowledged; not read back: Resend reports the schedule in its own timestamp format (2026-10-20 09:00:00+00), which cannot be compared exactly with the ISO 8601 value sent; check it with get-email.
resend-cancel-scheduled-email
Cancel one scheduled email so it is never sent; a canceled email cannot be rescheduled.
email_id
Read back
Read back by id; last_event must be canceled.
resend-create-contact
Create one contact with this email, and optionally a first and last name and whether they are unsubscribed from broadcasts.
emailfirst_namelast_nameunsubscribed
Read back
Read back by the new contact's id; the email must match.
resend-update-contact-name
Set one contact's first and last name; pass both, the current value for the one that does not change.
contact_idfirst_namelast_name
Read back
Read back by id; both names must match.
resend-set-contact-subscription
Unsubscribe one contact from all broadcasts (unsubscribed: true) or subscribe them again (false).
contact_idunsubscribed
Read back
Read back by id; unsubscribed must equal the value sent.
resend-delete-contact
Delete one contact by id, removing them from every segment. This cannot be undone.
contact_id
Acknowledged
Sent once and acknowledged; not read back: Resend does not document what reading a deleted contact returns, so the receipt rests on Resend's deleted: true answer.
resend-add-contact-to-segment
Add one existing contact to one segment, so broadcasts to that segment reach them.
contact_idsegment_id
Read back
Read back from the contact's segments; the segment must be among them.
resend-remove-contact-from-segment
Remove one contact from one segment; the contact itself is kept.
contact_idsegment_id
Read back
Read back from the contact's segments; the segment must no longer be among them.
The brake
Suggested limits
Shared by every agent, session and key in the environment. You set the number.
Suggested approvals
Installed turned off. The reviewer sees the exact request, and the approved request is the one that runs.
Before you rely on it
Use it
npm install -g @anlyonhq/cli
anlyon auth login
# Shows where to create the key, then asks for it without echoing
anlyon connections add resend --secret RESEND
# From a clone of github.com/AnlyonHQ/anlyon-platform:
# see what would be installed, then switch on one operation
anlyon packs plan ./packs/resend
anlyon packs install ./packs/resend --action send-email --yesimport { Client } from "@anlyonhq/sdk";
const anlyon = new Client({ apiKey: process.env.ANLYON_AGENT_KEY! });
const { data } = await anlyon.actions.invoke(
"resend-send-email",
{
"from": "Acme <hello@acme.com>",
"to": [
"sam@example.com"
],
"subject": "Your refund is on its way",
"html": "<p>Hi Sam, we refunded your order.</p>"
},
);
if (data?.pendingApproval) {
console.log("Waiting for a person", data.approvalId);
} else {
console.log(data?.status, data?.responseStatus);
}# Claude Code. Sign in with the browser, no key to paste.
claude mcp add --transport http anlyon https://api.anlyon.com/mcp
# Then ask in plain words. Each operation you switched on is a tool.Prefer to click?
The console does all of it: connect, switch operations on, set the limit, and copy the setup for your agent.
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