Test Transactional Emails
Password resets, receipts, notifications—test them all programmatically before they reach real users.
Transactional emails break silently
- Template changes can break rendering across email clients
- Dynamic content (names, amounts) may not populate correctly
- Links and CTAs can point to wrong URLs
- You only find out when users complain
Catch issues before production
- Trigger emails in staging and verify content programmatically
- Assert dynamic variables are correctly interpolated
- Validate links and CTAs point to expected URLs
- Test across different data scenarios
Example
Testing Password Reset Emailtypescript
import { expect } from 'vitest';
test('password reset email contains valid link', async () => {
const userEmail = `reset+${crypto.randomUUID()}@in.plop.email`;
// Trigger password reset
await api.post('/auth/forgot-password', { email: userEmail });
// Fetch the reset email
const email = await plop.messages.latest({ to: userEmail });
// Extract and validate reset link
const resetLink = email.htmlContent.match(/href="([^"]*reset[^"]*)"/)?.[1];
expect(resetLink).toBeDefined();
expect(resetLink).toContain('/reset-password?token=');
// Verify link works
const response = await fetch(resetLink);
expect(response.status).toBe(200);
});Benefits
Prevent Revenue Loss
Broken receipt emails mean support tickets and refunds.
Security Validation
Ensure reset tokens and magic links work correctly.
Template Regression
Catch template bugs before they ship.
Content Accuracy
Verify dynamic content renders correctly.
Related Use Cases
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