Sendbound
SaaS Infrastructure

Email infrastructure
for your product

When your product sends email on behalf of your customers, you need more than an SMTP relay. You need a multi-tenant API that handles domain verification, reputation isolation, and infinite scale.

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Tenants · Sendbound

4 active

Tenant

DKIM

DMARC

Acme Corp

Acme Corp

acme.com · 12,400/mo

OK
OK
Verified
Stripe Inc

Stripe Inc

stripe.com · 8,200/mo

OK
OK
Verified
Shopify

Shopify

shopify.com · 31,000/mo

OK
OK
Verified
Startup.io

Startup.io

startup.io · —

—
—
Pending DNS
200 OKdomains.ts

sb.domains.create({

name: 'acme.com',

selector: 'sb123'

});

// DNS records ↓

TXT sb123._domainkey

TXT _dmarc

acme.com verified

DKIM · DMARC · SPF · all passing

Total volume

51,600

emails this month

↑ 23% vs last month

Unlimited
Domains
Unlimited
Webhooks
Included
Domain API
Add-on
Dedicated IPs

Automate your onboarding

Don't make your customers email you to set up their domain. Generate DKIM records and check verification status programmatically.

Domain management API

Automate onboarding. Create domains, generate DKIM records, and check verification status entirely via API.

Tenant webhooks

Route bounce, open, and click events directly to your customers so they can see their own analytics.

Sub-account isolation

Keep data, API keys, and reputation separate. If one customer sends spam, it doesn't affect the rest.

Dedicated IP pools

Assign dedicated IPs to your highest volume customers to give them complete control over their reputation.

domains.ts
import { Sendbound } from 'sendbound';

const sb = new Sendbound(process.env.SB_KEY);

const domain = await sb.domains.create({
  name: 'customer-domain.com',
  customDkimSelector: 'saas123'
});

console.log(domain.dnsRecords);
/* [
  { type: 'TXT', host: 'saas123._domainkey',
    value: 'v=DKIM1;...' },
  { type: 'TXT', host: '_dmarc',
    value: 'v=DMARC1; p=none;' }
] */

Built for scale

The primitives you need to build an email service into your product.

Multi-tenant routing

Send emails on behalf of your customers' domains.

Custom sub-accounts

Isolate reputation and analytics per customer.

White-labeling

Remove all Sendbound branding from emails and UI.

High volume

Scale to billions of emails with dedicated IPs.

SOC 2
SOC 2
ISO 27001
ISO 27001
GDPR
GDPR
CCPA
CCPA
HIPAA
HIPAA
PCI DSS
PCI DSS
CSA STAR
CSA STAR

Security and compliance, handled

When you're processing data for hundreds of customers, you need a partner that takes security as seriously as you do.

  • SOC2 Type II and GDPR compliant
  • Data encryption at rest and in transit
  • Granular RBAC for your internal teams
  • Configurable log retention periods
"

We power the email functionality for over 500 different storefronts. Sendbound's domain API let us automate what used to be a massive manual headache.

Mark T.

CTO

"

The ability to isolate reputation across sub-accounts means one bad actor can't bring down deliverability for our other 10,000 users.

Sarah W.

VP Product