Best Email MTA for High Volume Sending
PostMTA handles 10M+ emails/day on standard hardware. Here's the review.
Why Not SendGrid at Scale?
- Per-email fees add up to $890+/month at 1M emails
- Limited customization and control
- Rate limits regardless of plan tier
- Locked to their infrastructure
PostMTA vs Managed Services
| Factor | SendGrid/Mailgun | PostMTA |
|---|---|---|
| Cost at 1M | ~$890/mo | ~$40/mo |
| Data | No | Full |
| Infrastructure | theirs | yours |
Who PostMTA Is For
- 100K+ emails/month
- Email marketing agencies
- Multi-tenant SaaS
- E-commerce platforms
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