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Modern Transactional InfrastructureTransparent Billing

The Mailgun alternative with honest pricing and zero complicated overage traps

Mailgun makes domain configuration confusing, locks features behind steep enterprise contracts, and charges punishing overage rates. SadaSend gives developers clear pricing, instant DNS verification, and native AI agent guardrails.

3,000 emails/month freeZero credit card requiredSub-20ms edge latency
< 60s
DNS Verification Time
Instant automated polling
6,000
Free Monthly Sends
No credit card required
Scale plans
API Uptime SLA
Per the Terms; not offered on Free, Starter or Pro
Developer Ergonomics

Drop into your application in under 60 seconds

Native typed interfaces with zero unnecessary dependencies. Built for standard fetch and modern edge runtimes.

$npm install sadasend
mailgun-switch.ts
typescript
TYPESCRIPT
import { SadaSend } from 'sadasend';

// Replace mailgun.js with modern SadaSend client
const client = new SadaSend(process.env.SADASEND_API_KEY!);

export async function sendReceipt(customerEmail: string, orderTotal: string) {
  const result = await client.emails.send({
    from: 'billing@yourdomain.com',
    to: customerEmail,
    subject: 'Your Subscription Receipt',
    html: `<p>Thank you for your payment of <strong>${orderTotal}</strong>.</p>`,
    tags: ['billing', 'receipt']
  });

  // Zero domain routing complexity or cryptic API responses
  console.log('Receipt delivered successfully:', result.id);
  return result;
}
Core Infrastructure

Engineered for high deliverability and zero incident risk

Every layer from edge connection pooling to per-key rate limits is designed to keep critical transactional dispatches fast, reliable, and contained.

One-Click DNS Presets

Say goodbye to Mailgun complex TXT, MX, and CNAME record confusion. SadaSend provides one-click DNS verification presets for Cloudflare, AWS Route53, and Vercel.

Zero Credit Card Barrier

Get started immediately with 6,000 free emails every month without entering billing credentials or worrying about surprise credit card charges.

Built-in Agent Security Gates

Protect automated workflows and AI agents with per-key recipient allowlists, hourly send limits, and human approval queues.

Clear, Predictable Billing

Transparent plans with clear sending caps and zero punitive per-thousand overage spikes. Pay in USD, EUR, or GBP via Paddle.

Architectural Comparison

SadaSend vs Sinch Mailgun

Mailgun has grown bloated and expensive under corporate ownership. SadaSend offers an agile, developer-first experience with AI agent integration.

Feature & CapabilitySadaSendSinch Mailgun
Permanent Free Tier Without Credit Card
Native AI Agent Recipient Allowlists
low-latency Global Edge Routing
Hosted Model Context Protocol (MCP) Server
Forever Free Tier
Transparent Economics

Start with 3,000 emails every month at zero cost

No artificial paywalls on security. Unlike legacy providers that reserve recipient allowlists or dedicated IP pools for high enterprise tiers, every SadaSend account receives full safety controls from day one.

3,000 dispatches monthly forever with zero credit card
All safety gates, allowlists, and velocity limits included
Scale seamlessly: Starter ($12/mo for 10k), Pro ($19/mo for 50k), Scale ($79/mo for 250k)
Free Developer Plan
$0 / mo

No credit card required

Create Free AccountCompare all paid plan tiers
Frequently Asked Questions

Everything you need to know about Mailgun alternative

Clear, transparent answers on deliverability, API authentication, and rate limits.

Teams switch to avoid Mailgun's forced credit card trials, confusing multi-domain routing setups, unpredictable overage billing, and lack of guardrails for modern AI agents.
Technical Deep Dives

Related developer guides and architectural tutorials

Explore step-by-step production implementation blueprints, benchmarks, and protocols.

Documentation

REST API Reference & Endpoints

Complete REST API reference for sending emails, managing API keys, tracking delivery events, and configuring recipient allowlists with low latency.

Read guide
Documentation

SMTP relay & framework integrations

Connect existing applications, WordPress, Supabase, Laravel, Django, and Nodemailer to SadaSend via standard SMTP relay with zero code changes.

Read guide
Deep Dive4 min read

Migrating from Mailgun to SadaSend in 10 Minutes (Step-by-Step Guide)

Tired of complex Mailgun domain setups, confusing invoice add-ons, and legacy SDKs? Here is the step-by-step guide to migrating to SadaSend in under 10 minutes.

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Deep Dive3 min read

Why your transactional email goes to spam

People assume transactional mail is exempt from filtering because it was requested. Mailbox providers do not know that, and mostly do not care.

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Deep Dive3 min read

The Complete Guide to SPF, DKIM, and DMARC Alignment in 2026

Everything you need to know about SPF, DKIM, and DMARC in 2026: syntax rules, the 10-lookup SPF limit, strict vs relaxed alignment, and debugging with dig.

Read tutorial
Deep Dive3 min read

Dedicated IP vs Shared IP for Email: When Do You Actually Need One?

Think a dedicated IP will magically fix your deliverability? If you send under 100,000 emails a month, a dedicated IP will actually hurt your inbox placement. Here is the math.

Read tutorial
Deep Dive7 min read

Resend vs SadaSend: Which Developer Email API is Best for Your Stack?

Both Resend and SadaSend deliver outstanding developer experience and React Email rendering. Here is an in-depth technical breakdown of where each platform excels in modern software architectures.

Read tutorial