Now with AWS SES Integration & Real-Time Webhooks

Enterprise Email
Infrastructure That Delivers

SecureMailer powers transactional email for thousands of businesses—with industry-leading deliverability, GDPR/CAN-SPAM compliance, and AWS-grade reliability built in from day one.

99.97%
Uptime SLA
2.1B+
Emails Delivered
<0.01%
Complaint Rate
50ms
Avg. Send Latency
🔒
TLS 1.3 EncryptionEnd-to-end in transit
☁️
AWS PoweredUS-East & US-West regions
📋
CAN-SPAM CompliantMandatory unsubscribe
📊
Real-Time AnalyticsOpen, click, bounce tracking
RESTful APISend in under 100ms
Platform Features

Everything you need for
mission-critical email delivery

Built for developers and growth teams who can't afford email failures. Reliable, secure, and compliant by design.

📬

High Deliverability

Dedicated IPs, warm-up automation, and reputation management ensure your emails reach the inbox—not the spam folder.

🔐

DKIM & SPF Setup

One-click DKIM signing, SPF record generation, and DMARC policy management protect your domain reputation automatically.

📈

Real-Time Analytics

Track opens, clicks, bounces, and complaints in real-time. Export reports or pipe data to your warehouse via webhooks.

🔗

RESTful API & SMTP

Integrate in minutes with our REST API or drop-in SMTP relay. SDKs for Node.js, Python, PHP, Ruby, and Go.

How It Works

From signup to
your first send in minutes

No complex configuration. SecureMailer handles the infrastructure so your team can focus on building great products.

1

Create Your Account & Verify Domain

Sign up, add your sending domain, and our system walks you through DNS record configuration. DKIM, SPF, and DMARC—handled automatically with step-by-step validation.

2

Integrate via API or SMTP Relay

Grab your API key, install our SDK, or plug in your SMTP credentials. Your first test email is one curl command away. Full documentation available from day one.

3

Monitor, Scale & Optimize

Watch delivery metrics in real time from your dashboard. Set up bounce handling, configure suppression lists, and scale to millions with zero infrastructure management.

send-email.js
const SecureMailer = require('@securemailer/node');

const client = new SecureMailer({
  apiKey: process.env.SM_API_KEY
});

// Send a transactional email
await client.send({
  from: 'noreply@yourapp.com',
  to: 'user@example.com',
  subject: 'Your verification code',
  template: 'otp-verification',
  data: { code: '847291', expiry: 10 }
});

// Response: { id: 'msg_3kX9...', status: 'queued' }
Industries We Serve

Trusted across every sector

From early-stage startups to enterprise deployments, SecureMailer powers email for companies that can't afford inbox failures.

🏦 FinTech & Banking
🏥 Healthcare & Telehealth
🛒 eCommerce & Retail
📱 SaaS Platforms
🎓 EdTech & LMS
🏛️ Government & Public Sector
🚀 Developer Tools
📦 Logistics & Supply Chain
⚖️ Legal & Compliance
🔒 Cybersecurity
🌐 Media & Publishing
✈️ Travel & Hospitality
Get Started Today

Start delivering email
the right way

Join thousands of businesses that trust SecureMailer for their most important communications. No credit card required for the Starter plan.

About SecureMailer

Built in the US. Built for trust.

We believe businesses deserve email infrastructure that's reliable, transparent, and compliant without compromise. That's why we built SecureMailer.

Our Mission

Raising the standard for email delivery

SecureMailer was founded in Wilmington, Delaware with a single purpose: to provide American businesses with email infrastructure that is not only fast and reliable, but built on an ethical foundation that protects both senders and recipients.

The email ecosystem suffers from bad actors—spammers, phishers, and bad-faith marketers who degrade inbox trust for everyone. Our platform is designed from the ground up to make compliant email sending easy and non-compliant sending impossible.

Every account we create, every email we send, and every feature we build is evaluated against one question: does this make email better or worse for the world?

🇺🇸

Proudly US-Based

SecureMailer, Inc. is incorporated in Delaware and operates infrastructure in AWS US-East-1 and US-West-2 regions. All customer data is stored within the United States.

☁️

AWS-Powered Infrastructure

Our platform runs on Amazon Web Services, leveraging Amazon SES for high-throughput sending, EC2 for processing, RDS for data, and CloudWatch for observability.

📋

Compliance by Design

CAN-SPAM Act compliance, GDPR data processing agreements, mandatory unsubscribe mechanisms, and double opt-in workflows are built into the platform—not bolted on.

Our Values

What we stand for

🛡️ Sender & Recipient Protection

We protect both sides of every email. Senders get tools to maintain domain reputation. Recipients are protected by mandatory unsubscribe links, suppression lists, and abuse monitoring.

📖 Radical Transparency

We publish our sending policies, compliance standards, and acceptable use guidelines publicly. Our status page shows real-time performance. No hidden terms, no surprise restrictions.

⚖️ Zero Tolerance for Abuse

Spam, phishing, malware distribution, and purchased-list campaigns result in immediate account termination. We actively cooperate with abuse.net, Spamhaus, and law enforcement.

🔬 Continuous Improvement

Our deliverability team monitors inbox placement across all major ISPs daily. When Gmail or Outlook changes filtering rules, our customers benefit from proactive adaptation.

Leadership

The team behind SecureMailer

JM
James Merritt
Chief Executive Officer

Former VP of Infrastructure at SendGrid. 14 years building email systems at scale. Delaware native.

SL
Sarah Lin
Chief Technology Officer

AWS certified architect. Led email infrastructure for Fortune 100 clients. Specialist in deliverability and IP reputation systems.

RK
Robert Kaplan
Chief Compliance Officer

Attorney specializing in digital communications law. CAN-SPAM and GDPR compliance expert. Former FTC staff counsel.

Ready to build on a platform
you can trust?

Start with 10,000 free emails per month. No credit card required.

Platform Features

Everything your
email stack needs

SecureMailer provides a complete email infrastructure suite—from raw SMTP relay to advanced analytics and template management.

SMTP Relay

Drop-in SMTP relay with dedicated IPs

Plug SecureMailer into any application that supports SMTP. Get dedicated IP addresses, automatic warm-up scheduling, and per-domain reputation tracking without any code changes.

  • Ports 25, 465 (SSL), 587 (TLS) supported
  • Dedicated and shared IP pools available
  • Automatic IP warm-up scheduling
  • Per-domain DKIM signing
  • TLS 1.3 required for all connections
Host: smtp.securemailer.us
Port: 587
Security: STARTTLS
Auth: LOGIN
Username: apikey
Password: sm_live_••••••••••••

# Test with curl:
curl --ssl-reqd \
  --url 'smtps://smtp.securemailer.us:465' \
  --user 'apikey:sm_live_key' \
  --mail-from 'you@domain.com'
RESTful API

A modern API built for developers

Our JSON-based REST API lets you send emails, manage templates, retrieve analytics, and configure domain settings—all programmatically. Webhook delivery for real-time events.

  • JSON request/response format
  • Bearer token authentication
  • Rate limiting: 1,000 req/sec on Enterprise
  • Official SDKs: Node.js, Python, PHP, Ruby, Go
  • OpenAPI 3.0 schema available
POST /v1/email/send
Authorization: Bearer sm_live_••••
Content-Type: application/json

{
  "from": "hello@myapp.com",
  "to": ["user@example.com"],
  "subject": "Invoice #1042",
  "template_id": "tpl_invoice_v2",
  "variables": {
    "amount": "$149.00",
    "due_date": "2025-08-15"
  }
}
Analytics & Reporting

Real-time delivery intelligence

Monitor every email in real time. Track delivery, opens, clicks, bounces, and complaints with millisecond precision. Identify deliverability issues before they affect your reputation.

  • Per-message delivery timeline
  • Aggregate open/click rates
  • ISP-level delivery breakdown
  • Bounce categorization (hard/soft)
  • Complaint rate monitoring vs. ISP thresholds
Last 7 Days — Email Volume
98.4%
Delivery Rate
32.1%
Open Rate
0.008%
Complaint Rate
Bounce & Complaint Handling

Automatic reputation protection

Hard bounces and spam complaints are automatically processed and added to your suppression list within seconds. SecureMailer prevents re-sending to invalid addresses so your domain reputation stays pristine.

  • Instant suppression on hard bounce or complaint
  • Global suppression list management
  • ISP feedback loop integration
  • Bounce webhook payloads
  • Export and import suppression lists via API
bounce@invalid.com
Hard bounce — User unknown
Suppressed
complaint@hotmail.com
Spam complaint via FBL
Suppressed
temp@domain.com
Soft bounce — Mailbox full (retry 4/5)
Retrying
Transparent Pricing

Simple pricing.
No surprises.

Pay only for what you send. All plans include our full compliance suite, DKIM/SPF setup, and real-time analytics.

Starter
$0/mo
For developers and early-stage startups testing their integration
  • 10,000 emails/month included
  • Shared IP pool
  • REST API & SMTP relay access
  • Standard deliverability suite
  • Basic analytics dashboard
  • Email template editor (5 templates)
  • Bounce & complaint handling
  • Community support
  • 1 sending domain
  • Dedicated IP
  • Priority support

No credit card required

Enterprise
Custom
For high-volume senders and regulated industries requiring custom SLA
  • Custom email volume (starts at 2M/mo)
  • Dedicated IP pool (multiple IPs)
  • Custom subdomain routing
  • 99.99% uptime SLA with financial guarantee
  • Custom retention policies
  • Dedicated account manager
  • 24/7 phone & Slack support
  • Custom GDPR/HIPAA DPA available
  • SAML SSO & MFA enforcement
  • On-premises deployment option
  • Priority deliverability support
  • Penetration test reports on request

Response within 1 business hour

All plans include

🔒
TLS Encryption
All connections encrypted in transit
📋
CAN-SPAM Compliance
Mandatory unsubscribe headers
🛡️
DKIM / SPF / DMARC
Full email authentication suite
📊
Analytics Dashboard
Delivery, open, and click tracking
Contact Us

Get in touch

Whether you're evaluating SecureMailer or need support, our team is here to help.

📍
Headquarters
123 Market Street, Suite 400
Wilmington, DE 19801
United States
✉️
Email
support@securemailer.us
📞
Phone (Business Hours EST)
+1 (302) 555-0147
🕐
Support Hours
Mon–Fri, 8:00 AM – 6:00 PM EST
🚨
Abuse Reports
abuse@securemailer.us
Response Times
Starter48 hours
Growth24 hours
Enterprise1 business hour

Send us a message

By submitting this form you agree to our Privacy Policy.

Anti-Spam & Compliance

Email compliance
built into every send

SecureMailer enforces strict anti-spam standards at the infrastructure level. Compliance isn't optional — it's automatic.

Opt-In Only Policy

SecureMailer enforces a strict opt-in only policy for all marketing and commercial email campaigns. Sending to purchased lists, scraped addresses, or any recipient who has not explicitly consented is grounds for immediate account termination.

Our platform does not permit cold outreach campaigns. All marketing sends must originate from verified opt-in consent obtained by the account holder.

Double Opt-In Support

Our platform natively supports double opt-in (DOI) workflows. When enabled, new subscribers receive a confirmation email before being added to your active list. This dramatically reduces bounce rates, complaint rates, and list quality issues.

Double opt-in is required for all marketing campaigns exceeding 50,000 sends per month and is strongly recommended for all marketing use cases.

Complaint Rate Monitoring

SecureMailer monitors complaint rates in real-time through ISP feedback loops with Gmail, Yahoo, Hotmail/Outlook, and other major providers. Complaint data is surfaced to your dashboard within minutes of receipt.

Accounts approaching Google's 0.10% complaint rate threshold are automatically warned and throttled. Accounts exceeding 0.30% are suspended pending review.

Suppression List Management

All hard bounces, spam complaints, and unsubscribe requests are immediately added to your suppression list and honored on all future sends. SecureMailer maintains a global cross-account suppression list to protect our shared infrastructure.

You can manage, import, and export suppression lists via the API or dashboard. SecureMailer will never allow you to send to a suppressed address.

AWS SES Integration

Amazon SES: Powering our delivery infrastructure

SecureMailer's email delivery infrastructure is built on Amazon Simple Email Service (SES), the same email platform trusted by Amazon.com and AWS customers globally. We operate in Amazon SES Production Access status, which requires demonstrated compliance with all anti-spam standards.

☁️

AWS SES Production Access

Our account operates under Amazon SES Production Access, subject to SES sending limits and complaint policies. We maintain a complaint rate well below the 0.10% SES threshold.

🌐

Multi-Region Redundancy

We operate in AWS US-East-1 (N. Virginia) and US-West-2 (Oregon) with automatic failover to ensure continued delivery during regional disruptions.

📊

SNS Bounce & Complaint Handling

Amazon SNS notifications are processed in real time to update suppression lists within seconds of a bounce or complaint event from any major ISP.

Regulatory Compliance Standards

CAN-SPAM Act (15 U.S.C. § 7701 et seq.): All commercial email sent through SecureMailer includes a valid physical postal address, accurate sender identification, clear subject lines, and a functional unsubscribe mechanism honored within 10 business days.
GDPR (EU) 2016/679: SecureMailer acts as a data processor for email content under GDPR. We provide Data Processing Addendums (DPAs) to all customers. Personal data of EU residents is protected under Standard Contractual Clauses.
CASL (Canadian Anti-Spam Legislation): For customers sending to Canadian recipients, SecureMailer supports CASL-compliant consent workflows with timestamped opt-in records and the two-year implied consent expiry.
RFC 5321/5322 (Email Standards): All emails sent through SecureMailer conform to Internet email standards including proper MIME formatting, header requirements, and message identification.
DMARC / DKIM / SPF Authentication: SecureMailer enforces domain authentication for all sending domains. Emails failing DKIM verification or SPF alignment are blocked before delivery to protect our sending reputation.

Welcome back

Sign in to your account to access your dashboard


or
📊  Overview
✉  Send Email
📋  Templates
📈  Analytics
🔗  Webhooks
🌐  Domains
🚫  Suppressions
🔑  API Keys
💳  Billing
⚙️  Settings
←  Back to Site
Good morning, James 👋
Here's what's happening with your email sending today.
Sent Today
48,291
↑ 12.4% vs yesterday
Delivery Rate
98.7%
↑ 0.3% vs last week
Open Rate
31.2%
— no change
Complaint Rate
0.006%
Well below threshold
Email Volume — Last 30 Days
Jun 22Jul 22
Message ID Recipient Subject Template Sent At Status
msg_3kXa9P... j.smith@gmail.com Verify your email address email-verify 2 min ago Delivered
msg_7mBq2R... alice@acmecorp.com Invoice #1042 — $299.00 invoice-v2 8 min ago Delivered
msg_2pZx1L... bob@oldmail.net Password reset request password-reset 15 min ago Bounced
msg_9nYr4K... carol@startup.io Welcome to MyApp 🎉 welcome-email 22 min ago Delivered
msg_5tQw8M... dave@enterprise.com Your OTP: 481927 otp-code 31 min ago Pending
API Reference

SecureMailer API v1

Base URL: https://api.securemailer.us/v1

The SecureMailer API is organized around REST principles. All requests and responses use JSON encoding. Authentication uses Bearer token (API key) in the Authorization header. We follow standard HTTP status codes and return descriptive error messages.

Your API Key
sm_live_••••••••••••••••••••••••••••••

Authentication

All API requests require authentication using your SecureMailer API key as a Bearer token in the Authorization header. API keys can be generated in your account dashboard under Settings → API Keys.

curl https://api.securemailer.us/v1/email/send \
  -H "Authorization: Bearer sm_live_YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ ... }'

Keep your API keys secure. Do not commit them to source control. Use environment variables or a secrets manager. If compromised, rotate your key immediately from the dashboard.

Send Email

POST /v1/email/send

Sends a single transactional or marketing email. For bulk sending, use the /v1/email/batch endpoint.

Request Parameters

ParameterTypeRequiredDescription
fromstringrequiredSender email address. Must be a verified domain in your account.
tostring | arrayrequiredRecipient email address or array of addresses (max 50 per request).
subjectstringrequiredEmail subject line (max 998 characters).
htmlstringoptionalHTML body of the email. Required if text is not provided.
textstringoptionalPlain-text body. Strongly recommended alongside HTML for deliverability.
template_idstringoptionalID of a saved template. Replaces html/text if provided.
variablesobjectoptionalKey-value pairs for template variable substitution.
reply_tostringoptionalReply-to address. Defaults to the from address.
attachmentsarrayoptionalArray of attachment objects with name, content (base64), and mime_type.
tagsarrayoptionalArray of string tags for analytics segmentation (max 10).
track_opensbooleanoptionalEnable open tracking pixel. Default: true.
track_clicksbooleanoptionalEnable click tracking. Default: true.

Example Request

{
  "from": "noreply@myapp.com",
  "to": "user@example.com",
  "subject": "Your one-time password",
  "template_id": "tpl_otp_v1",
  "variables": {
    "otp_code": "847291",
    "expires_in": 10,
    "app_name": "MyApp"
  },
  "tags": ["auth", "otp"],
  "track_opens": false,
  "track_clicks": false
}

Example Response

// HTTP 200 OK
{
  "id": "msg_3kXa9Pqm8...",
  "status": "queued",
  "to": "user@example.com",
  "created_at": "2025-07-22T14:32:01.483Z",
  "estimated_delivery_ms": 340
}

Webhook Events

SecureMailer delivers real-time event notifications via HTTP POST to your configured webhook endpoint. Configure webhooks in your dashboard under Settings → Webhooks.

Event Types

  • email.delivered — Email accepted by the recipient's mail server
  • email.opened — Recipient opened the email (pixel loaded)
  • email.clicked — Recipient clicked a tracked link
  • email.bounced — Email bounced (hard or soft). Address added to suppression list if hard bounce.
  • email.complained — Recipient marked as spam via ISP feedback loop. Address suppressed immediately.
  • email.unsubscribed — Recipient clicked unsubscribe. Added to suppression list.

Webhook Payload Example

{
  "event": "email.delivered",
  "message_id": "msg_3kXa9Pqm8...",
  "timestamp": "2025-07-22T14:32:01.823Z",
  "recipient": "user@example.com",
  "tags": ["auth", "otp"],
  "metadata": {
    "smtp_id": "<20250722143201.abc@ses.us-east-1.amazonaws.com>",
    "mx_host": "gmail-smtp-in.l.google.com"
  }
}

Rate Limits

Rate limits are applied per API key. Exceeding a rate limit returns HTTP 429 with a Retry-After header indicating when you can resume sending.

PlanSend LimitAPI RequestsBatch Size
Starter10K/month100/min50 recipients
Growth250K/month1,000/min500 recipients
EnterpriseCustom10,000/min5,000 recipients

Error Codes

CodeHTTP StatusDescription
invalid_api_key401API key is missing, revoked, or invalid.
domain_not_verified403Sending domain is not verified on your account.
recipient_suppressed422Recipient is on your or global suppression list.
invalid_template422Template ID not found or template has errors.
rate_limit_exceeded429Rate limit reached. Check Retry-After header.
monthly_limit_exceeded429Monthly email quota exhausted. Upgrade plan.
internal_error500Server-side error. Contact support if persistent.
Message sent successfully! We'll respond within 24 hours.