Best permanent free tiers

2,500 subscribers and 15,000 emails/mo on a permanent free plan. Strongest free marketing tier in this set.

12,000 transactional SMTP emails/mo is unusually generous, though the free plan is hourly capped.

6,000/mo capped at 200/day. Permanent and useful for steady low-volume sends.

Unlimited emails on the Free plan within a 1,000-contact ceiling. Different model: optimal when your contact list grows slowly but your volume is high.

300/day permanent. Best for low daily volumes that do not spike on launch day.

4,000/mo permanent on the sending side, plus a free testing tier.

3,000/mo permanent on a single domain.

3,000/mo permanent.

3,000/mo on hosted free plan, or self-host for unlimited.

62,000/mo free, but only when sending from EC2.

1,000/mo permanent, no daily cap.