For the complete site index, see llms.txt. Docs index: llms-docs.txt. Marketing corpus: llms-full.txt. Docs corpus: llms-full-docs.txt. Prefer markdown URLs where available (append .md).. Product skill: skill.md. Pricing: pricing.md. Docs MCP: /docs/mcp. Site MCP: /mcp.

An open-source alternative to

Email for AI Agents & Developers.

High-performance, open-source email infrastructure—the same service as proprietary platforms. Use Reloop hosted or deploy it yourself.

Start for freeDocumentation

Use cases

Built for every Single Need

01

AI Agent Inbox

A dedicated inbox for AI agents to manage and respond to emails like a human.

  • Native agent inbox
  • Autonomous drafting
  • Human-in-the-loop
  • Contextual memory
02

Transactional Email

Guarantee delivery for critical, real-time user updates.

  • Password reset
  • Order confirmation
  • Account verification
  • Payment receipts
03

Automated Emails

Automate user journeys and engagement flows.

  • Welcome series
  • Renewal reminders
  • Re-engagement
  • Drip campaigns
04

Marketing Emails

High-volume newsletters and promotional campaigns.

  • Product launches
  • Newsletters
  • Promotions
  • Events
05

System & Monitoring

Zero-latency technical and admin communications.

  • Error logs
  • Downtime alerts
  • Reports
  • Approvals
06

Receive Email

Seamlessly process and route inbound mail to your systems.

  • Inbound webhooks
  • JSON parsing
  • Spam filtering
  • Attachment handling
1

Install the Node.js package

npm install reloop-email
2

Send email with Node.js

send_email.ts
1import Reloop from 'reloop-email';
2

3const reloop = new Reloop(process.env.RELOOP_API_KEY);
4

5const { data, error } = await reloop.emails.send({
6  from: 'Acme <onboarding@yourdomain.com>',
7  to: ['delivered@yourdomain.com'],
8  subject: 'Hello from Node.js',
9  html: '<strong>It works!</strong>',
10});
11

12if (error) {
13  console.error(error);
14  return;
15}
16

17console.log('Email sent:', data.id);
3

GitHub, examples, and API reference

Node.js example
API reference
Node.js SDK
4

Need more help?

Integrate

Drop Reloop into the stack you already run.

Official guides for Next.js, Django, Laravel, Rails, and a dozen more. SMTP if you would rather skip an SDK.

Browse SDKs

SDK. API. MCP.

Same mail path from a package, a curl, or an agent. Pick the surface that matches the runtime.

Deliverability

Built to land in the inbox.

Proactive blocklist tracking

Know first if your domain hits a DNSBL or RBL. Reloop surfaces listings before they become a delivery incident.

Faster time to inbox

Send from the region closest to the recipient. Fewer hops, less latency, better inbox placement.

Build confidence with BIMI

Show your logo next to authenticated mail with BIMI. Get DMARC to enforcement first — the logo only works on top of it.

Managed dedicated IPs

A dedicated IP that warms with your volume — or bring your own. No waiting around to send.

Dynamic suppression list

Stop mailing people who bounced, complained, or unsubscribed. The suppression list is checked on every send path.

IP and domain monitoring

Watch DNS and IP reputation. Get told when a record drifts or a change could hurt delivery.

Verify DNS records

Prove you are a legitimate sender. Guided DKIM and SPF setup when you add a domain.

Battle-tested infrastructure

Shared and dedicated pools used by senders who already have to land. Distributed workloads across IP pools.

Prevent spoofing with DMARC

Tell inbox providers what to do with mail that isn't yours. DMARC policies stop impersonation before it hits the inbox.

We ship fast

Always improving, adding features and functionality.

Full changelog
  1. Agent inbox, workflows & marketing siteInbound agent inbox APIs, a workflow editor prototype, Chatwoot live chat, and a redesigned marketing site with SEO and licensing pages.
  2. Templates, webhooks & deliverabilityCollaborative template editing, webhook delivery and retries, custom tracking domains, and deliverability charts in the dashboard.
  3. Contacts, topics & API platformContacts, groups, topics, and API keys as first-class primitives with expanded OpenAPI coverage and public documentation.
  4. Template editor & observabilityA visual template editor, ClickHouse-backed logs, domain settings improvements, and editor observability tooling.

Built for developers
Available today.

Start for freeContact us
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