Email - Naïve

Email is one of the most fundamental primitives in Naive API v2. Every company gets a system domain auto-provisioned on registration, and agents can create inboxes, send mail, and read replies — all scoped to the authenticated identity. This guide covers the full email lifecycle: domain setup, inbox provisioning, sending, and reading.

CLI First

# Create inbox and send email
naive email create --local-part hello
naive email inboxes
naive email send --from-inbox <inbox-id> --to user@example.com --subject "Hi" --body "Hello"

Tools

Tool	Type	Description
`create_inbox`	Core	Create a new email inbox on the company’s domain
`delete_inbox`	Core	Deactivate an email inbox
`list_inboxes`	Core	List all available inboxes for the company
`send_email`	Core	Send an email from a specific inbox
`list_inbox_emails`	Core	List received emails for an inbox
`get_email`	Core	Read the full body of a specific email

Domain Prerequisites

Before sending email, your company needs an active (verified) domain. System domains are auto-provisioned on registration but may start as pending_dns until the email-provider records are verified.

curl https://api.usenaive.ai/v1/domains \
  -H "Authorization: Bearer nv_sk_your_key"

const response = await fetch("https://api.usenaive.ai/v1/domains", {
  headers: { "Authorization": "Bearer nv_sk_your_key" },
});
const { domains } = await response.json();

If your domain shows pending_dns, trigger verification:

curl -X POST https://api.usenaive.ai/v1/domains/{domain_id}/verify \
  -H "Authorization: Bearer nv_sk_your_key"

See Domain Management for the full BYOD workflow.

Creating Inboxes

Create email addresses on your company’s active domain. Each inbox gets a dedicated identity.

curl -X POST https://api.usenaive.ai/v1/email/inboxes \
  -H "Authorization: Bearer nv_sk_your_key" \
  -H "Content-Type: application/json" \
  -d '{ "local_part": "support" }'

const response = await fetch("https://api.usenaive.ai/v1/email/inboxes", {
  method: "POST",
  headers: {
    "Authorization": "Bearer nv_sk_your_key",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({ local_part: "support" }),
});
const inbox = await response.json();

Response:

{
  "id": "inbox-uuid",
  "address": "support@acme-corp.usenaive.ai",
  "local_part": "support",
  "domain": "acme-corp.usenaive.ai",
  "status": "active"
}

Parameters

Param	Type	Required	Default	Description
`local_part`	string	Yes	—	The part before `@` (min 2 chars, alphanumeric + dots/hyphens)
`domain_id`	string	No	Auto	Specific domain UUID (defaults to company’s first active domain)

You can create multiple inboxes on the same domain — support@, sales@, notifications@, etc.

Sending Email

The send_email tool requires the inbox UUID you’re sending from. This enforces identity — agents can only send from addresses they own.

curl -X POST https://api.usenaive.ai/v1/email/send \
  -H "Authorization: Bearer nv_sk_your_key" \
  -H "Content-Type: application/json" \
  -d '{
    "from_inbox": "inbox-uuid",
    "to": "prospect@company.com",
    "subject": "Research findings",
    "body": "Hi Sarah,\n\nHere are the results from our analysis..."
  }'

const response = await fetch("https://api.usenaive.ai/v1/email/send", {
  method: "POST",
  headers: {
    "Authorization": "Bearer nv_sk_your_key",
    "Content-Type": "application/json",
  },
  body: JSON.stringify({
    from_inbox: "inbox-uuid",
    to: "prospect@company.com",
    subject: "Research findings",
    body: "Hi Sarah,\n\nHere are the results from our analysis...",
  }),
});

Response:

{
  "id": "msg-uuid-123",
  "status": "sent",
  "credits_used": 10,
  "credits_remaining": 990
}

Parameters

Param	Type	Required	Default	Description
`from_inbox`	string	Yes	—	Inbox UUID to send from
`to`	string	Yes	—	Recipient email address
`subject`	string	Yes	—	Email subject line
`body`	string	Yes	—	Email body (plain text or HTML)
`reply_to`	string	No	—	Reply-to address override

Cost: 10 credits per email (deducted immediately on success)

Reading the Inbox

List received emails

curl "https://api.usenaive.ai/v1/email/inbox?from_inbox=inbox-uuid&limit=20" \
  -H "Authorization: Bearer nv_sk_your_key"

const response = await fetch(
  "https://api.usenaive.ai/v1/email/inbox?from_inbox=inbox-uuid&limit=20",
  { headers: { "Authorization": "Bearer nv_sk_your_key" } }
);
const { emails } = await response.json();

Response:

{
  "emails": [
    {
      "id": "em-uuid-1",
      "from": "sarah@company.com",
      "subject": "Re: Research findings",
      "received_at": "2026-04-27T10:30:00Z",
      "snippet": "Thanks for the update, this looks great..."
    }
  ]
}

Read a specific email

curl https://api.usenaive.ai/v1/email/em-uuid-1 \
  -H "Authorization: Bearer nv_sk_your_key"

Error Handling

Error	Cause	Recovery
`invalid_inbox`	Inbox UUID not found or not owned by this agent	Use `GET /v1/email/inboxes` to see available inboxes
`no_active_domain`	Company has no verified domain	Check `GET /v1/domains` and verify with `POST /v1/domains/:id/verify`
`domain_not_verified`	Sending from an unverified domain	Run `naive domains verify <id>` or `POST /v1/domains/:id/verify`
`insufficient_credits`	Not enough credits to send	Check balance with `GET /v1/status`
`duplicate_record`	Email address already exists (active)	Use a different `local_part`

Typical Workflow

Agent receives task: "Set up email and reach out to leads"
    │
    ├─ GET /v1/domains                         → Check domain status
    │   → status: active ✓
    │
    ├─ POST /v1/email/inboxes                  → Create outreach inbox
    │   { local_part: "outreach" }
    │   → address: outreach@acme.usenaive.ai
    │
    ├─ POST /v1/email/send                     → Send personalized email
    │   { from_inbox: "inbox-uuid",
    │     to: "lead@company.com",
    │     subject: "Quick question",
    │     body: "Hi Alex, ..." }
    │   → sent: true
    │
    ├─ GET /v1/email/inbox?from_inbox=...      → Check for replies
    │   → 1 new email
    │
    └─ GET /v1/email/em-uuid-1                 → Read the reply
        → "Thanks for reaching out! Let's schedule a call."

​CLI First

​Tools

​Domain Prerequisites

​Creating Inboxes

​Parameters

​Sending Email

​Parameters

​Reading the Inbox

​List received emails

​Read a specific email

​Error Handling

​Typical Workflow

CLI First

Tools

Domain Prerequisites

Creating Inboxes

Parameters

Sending Email

Parameters

Reading the Inbox

List received emails

Read a specific email

Error Handling

Typical Workflow