Free Transactional Email: Best Services with Free Plans (2026)

Find the best free transactional email services. Compare free tiers, sending limits, features, and setup for order confirmations, password resets, and more.

free transactional email

Free Transactional Email?

Transactional emails — order confirmations, password resets, shipping notifications — are critical to your business but should not cost a fortune. Several providers offer generous free tiers that handle transactional email needs for most small to medium businesses.

Free Transactional Email Providers Compared

Provider	Free Limit	API	SMTP	Authentication	Best For
Brevo	300/day (9K/month)	REST API	Yes	SPF, DKIM, DMARC	Most businesses
Amazon SES	62K/month	AWS SDK	Yes	Full	AWS-hosted apps
SendGrid	100/day (3K/month)	REST API	Yes	Full	Developer apps
Mailjet	200/day (6K/month)	REST API	Yes	Full	European businesses
Postmark	100/month	REST API	Yes	Full	Speed-critical apps

Why Brevo Is the Best Free Option

Highest free limit among easy-to-setup services: 300 emails/day
No credit card required for the free plan
Both SMTP and REST API included
Full authentication support: SPF, DKIM, DMARC
Real-time analytics: Delivery, opens, clicks
Same platform for marketing: Add campaigns and automation when ready
WordPress integration: WP Mail SMTP compatible

Types of Transactional Emails

Type	Trigger	Delivery Expectation
Order confirmation	Purchase completed	Under 2 minutes
Shipping notification	Order shipped	Under 5 minutes
Password reset	User request	Under 30 seconds
Account verification	Registration	Under 1 minute
Invoice/receipt	Payment processed	Under 2 minutes
Account alerts	Security events	Under 1 minute

For examples and templates, see our transactional email guide.

Setup: Brevo Free Transactional Email

Via SMTP

Host: smtp-relay.brevo.com
Port: 587
Username: Your Brevo login email
Password: Your SMTP key (from Settings > SMTP & API)
Encryption: TLS

Via REST API

Use the Brevo API with your API key for programmatic sending. Libraries available for Python, Node.js, PHP, Ruby, and more.

For WordPress

Install WP Mail SMTP and configure with Brevo credentials. See our WordPress SMTP guide for step-by-step instructions.

When to Upgrade from Free

Signal	Action
Hitting daily send limit regularly	Upgrade to Brevo Starter ($9/month)
Need dedicated IP	Upgrade to Business plan
Require advanced analytics	Upgrade for detailed reporting
Sending 50K+/month	Consider Amazon SES for cost savings
Need guaranteed delivery speed	Consider Postmark

Best Practices

Separate transactional from marketing — different sending reputation
Set up authentication — SPF, DKIM, DMARC
Monitor delivery rates — should be 99%+ for transactional
Design mobile-first — 60%+ of emails read on mobile
Test across email clients — Gmail, Outlook, Apple Mail
Keep promotional content minimal — transactional emails should be primarily informational

For a complete guide to transactional email, see what is transactional email and our SMTP guide.

Frequently Asked Questions

What is the best free transactional email service?

Brevo offers the best free tier with 300 emails/day (9,000/month) via SMTP and API. Amazon SES offers 62,000/month free from EC2. Both include authentication and analytics.

How many free transactional emails can I send?

Brevo: 300/day (9,000/month). Amazon SES: 62,000/month (EC2 only). SendGrid: 100/day (3,000/month). Mailjet: 200/day (6,000/month). Postmark: 100/month.

When should I upgrade from a free transactional email plan?

Upgrade when you consistently hit your daily limit, need dedicated IP for better deliverability, require advanced analytics, or want priority support. Brevo paid plans start at just $9/month.

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