| Email SMTP API Provider | Website | 100K emails | 500K emails | 1M emails | Tracks Delivery | Validates Addresses Before Sending | E2E Encryption Support 🔒🛡️ |
|---|---|---|---|---|---|---|---|
| SelfSend v2 (On-Premises or Hybrid) | github.com/SelfSend | FREE* | FREE* | FREE* | ✅ | ✅ Unlimited real-time validations (Syntax, DNS/MX, Disposable, Role-based, Spam Trap, etc) | ✅ |
| SelfSend v1 (On top of AWS-SES) | github.com/SelfSend | $10 | $50 | $100 | ✅ | ✅ Unlimited real-time validations (Syntax, DNS/MX, Disposable, Role-based, Spam Trap, etc) | ✅ |
| AWS SES | aws.amazon.com/ses | $10 | $50 | $100 | ❌ | ❌ | ❌ |
| MessageBird (SparkPost) | messagebird.com | $30 | $290 | $525 | ✅ | 🟠 Only Spam Trap Monitoring | ❌ |
| Mailtrap | mailtrap.io | $30* | $300 | $650* | ✅ | ❌ | ❌ |
| Twilio SendGrid | sendgrid.com | $35* | $319* | $748 | ✅ | 🟠 Up to 2.5K validations/month (If sending +700K emails/month) | ❌ |
| SMTPServer | smtpserver.com | $39* | $114 | $185 | ✅ | 🟠 Blacklists and DNS only | ❌ |
| SendPulse | sendpulse.com | $63 | $234 | $460 | ✅ | ❌ | ❌ |
| Mailgun | mailgun.com | $75 | $400 | $700 | ✅ | ❌ | ❌ |
| SMTP.com | smtp.com | $80 | $300 | $500 | ✅ | ❌ | ❌ |
| MailChimp | sendpulse.com | $80 | $378 | $656 | ✅ | ❌ | ❌ |
| Mailjet | mailjet.com | $105 | $470 | Upon request / Enterprise | ✅ | 🟠 Up to 2K validations/month (If sending +100K emails/month) | ❌ |
| Postmark | postmarkapp.com | $110 | $475 | $700 | ✅ | ❌ | ❌ |
- FREE* (SelfSend v2) when self-hosted, only fix operational costs would apply, such as hardware, electricity, etc.
- Prices with * have specific conditions (e.g., volume discounts, tiered pricing).
- Mailjet and Postmark are the most expensive for 100K emails.