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B2B SaaS Security & AuthenticationZero Delay · Audit Logging

Secure, instant password reset delivery for modern SaaS with zero token expiration timeouts

Deliver password reset links and time-sensitive verification tokens before they expire. low-latency API processing, strict TLS 1.3 encryption, and tamper-proof delivery audit trails.

3,000 emails/month freeZero credit card requiredSub-20ms edge latency
< 1.5s
Token Arrival
Inbox delivery speed
TLS 1.3
Encryption
MTA-STS enforced
6,000
Free Monthly Sends
Full security features
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
auth/password-reset.ts
typescript
TYPESCRIPT
import { SadaSend } from 'sadasend';

const sadasend = new SadaSend(process.env.SADASEND_API_KEY);

export async function sendPasswordResetToken(user: { email: string; token: string }) {
  const resetUrl = `https://app.yourdomain.com/reset-password?token=${user.token}`;

  return await sadasend.emails.send({
    from: 'Security <security@yourdomain.com>',
    to: user.email,
    subject: 'Password Reset Request',
    html: `
      <div style="font-family: sans-serif; max-width: 500px; margin: 0 auto;">
        <h2>Password Reset Request</h2>
        <p>We received a request to reset your password. This link expires in 15 minutes.</p>
        <p><a href="${resetUrl}" style="background: #2563eb; color: #fff; padding: 12px 24px; text-decoration: none; border-radius: 6px; display: inline-block;">Reset Password</a></p>
        <p style="color: #64748b; font-size: 13px;">If you did not request this change, you can safely ignore this email.</p>
      </div>
    `,
  });
}

Secure password reset dispatch function delivering one-time reset tokens with low latency and strict TLS encryption.

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.

low-latency Token Delivery

Ensure 15-minute expiration tokens arrive within seconds of user request, preventing failed auth attempts and user frustration.

Strict TLS 1.3 In-Transit Encryption

Enforce modern cipher suites and MTA-STS policies to ensure sensitive security tokens are never transmitted in cleartext.

Tamper-Proof Audit Logging

Retain granular dispatch logs with timestamps, recipient IP records, and cryptographic signatures for SOC 2 compliance.

Anti-Abuse Velocity Limits

Protect your authentication endpoints from automated credential stuffing attacks with integrated rate-limiting tripwires.

Custom Domain DKIM Signing

Ensure reset emails pass strict DMARC enforcement policies so security notifications never land in quarantine or spam.

6,000 Free Monthly Emails

Protect your B2B SaaS authentication pipeline with enterprise-grade deliverability and zero fixed monthly fees.

Architectural Comparison

SadaSend vs Shared Marketing Mailers (SendGrid / Mailchimp)

Why B2B SaaS engineering teams isolate authentication email traffic from marketing campaigns using SadaSend.

Feature & CapabilitySadaSendShared Marketing Mailers (SendGrid / Mailchimp)
Reputation Isolation from MarketingDedicated transactional streamRisk of shared queue blocking during promo blasts
IngestionAccepted and queued durably on the call1,500ms–8,000ms queue buffering
Token Expiration Window SafetyArrives in < 2 secondsFrequent queue delays cause token timeouts
Strict TLS 1.3 EnforcementDowngrades to opportunistic unencrypted TLS
Development Recipient Allowlists
Free Monthly Volume6,000 sends foreverSevere trial limitations
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 SaaS password reset email

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

Legacy providers often mix transactional authentication emails with bulk marketing newsletters on shared queues. When marketing blasts spike, password reset emails get delayed, causing reset tokens to expire.
Technical Deep Dives

Related developer guides and architectural tutorials

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