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.
Drop into your application in under 60 seconds
Native typed interfaces with zero unnecessary dependencies. Built for standard fetch and modern edge runtimes.
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.
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.
SadaSend vs Shared Marketing Mailers (SendGrid / Mailchimp)
Why B2B SaaS engineering teams isolate authentication email traffic from marketing campaigns using SadaSend.
| Feature & Capability | SadaSend | Shared Marketing Mailers (SendGrid / Mailchimp) |
|---|---|---|
| Reputation Isolation from Marketing | Dedicated transactional stream | Risk of shared queue blocking during promo blasts |
| Ingestion | Accepted and queued durably on the call | 1,500ms–8,000ms queue buffering |
| Token Expiration Window Safety | Arrives in < 2 seconds | Frequent queue delays cause token timeouts |
| Strict TLS 1.3 Enforcement | Downgrades to opportunistic unencrypted TLS | |
| Development Recipient Allowlists | ||
| Free Monthly Volume | 6,000 sends forever | Severe trial limitations |
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.
Everything you need to know about SaaS password reset email
Clear, transparent answers on deliverability, API authentication, and rate limits.
Related developer guides and architectural tutorials
Explore step-by-step production implementation blueprints, benchmarks, and protocols.
REST API Reference & Endpoints
Complete REST API reference for sending emails, managing API keys, tracking delivery events, and configuring recipient allowlists with low latency.
SMTP relay & framework integrations
Connect existing applications, WordPress, Supabase, Laravel, Django, and Nodemailer to SadaSend via standard SMTP relay with zero code changes.
Email Threat Modeling for SaaS: Preventing Compromised API Key Abuse
What happens when an engineer accidentally commits an email API key to a public GitHub repo? Here is the threat model and defense blueprint.
Supabase Custom SMTP Setup: Fix 429 Errors · SadaSend
Supabase defaults to a strict 2-emails-per-hour limit for testing. Learn how to connect SadaSend custom SMTP and Edge Functions in Supabase to eliminate 429 rate limit errors and achieve low-latency auth deliverability.
MTA-STS and TLS-RPT in 2026: Enforcing Strict Email Transit Encryption
Standard SMTP opportunistic TLS (STARTTLS) is vulnerable to downgrade attacks. Here is how to configure MTA-STS policy files and TLS-RPT records for enterprise email transit security.
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.