Free until you outgrow it.

Yes. Upgrades take effect immediately and you’re billed pro-rata. Downgrades refund the unused portion at the next billing cycle. No phone calls, no retention scripts.

You stay blocked at 100 % until the next monthly reset, or you can opt in to overage at $0.05 per generation (about 4× our internal cost — priced to discourage runaway usage rather than make money). Soft warning lands at 80 %. The Pro 2 000 / month cap covers most users; if you’re consistently above it, the Business tier is the right move.

No. If you’re on Starter with 200 / month and use 130, the remaining 70 don’t carry into next month. The cap is a budget, not a savings account.

Month-to-month or annual. No lock-in on monthly. Annual saves 17 % across every paid tier — about two months free — and stays cancellable. You’re refunded pro-rata if you change your mind.

50 % discount for registered 501(c)(3) and accredited educational institutions. Email hello@postern.io with proof and we’ll set it up — usually within one business day.

Yes. Thirty days, all paid tiers, no questions. If you paid for a month and it isn’t working out, we refund. We’d rather you leave whole than frustrated.

You do. Templates are your data. Export to JSON, MJML, or HTML at any time. We store them so you can use them inside Postern; you can delete the account and the templates with one button.

No. Your template content, prompts, and generation history never go into model training. We use Anthropic and AWS Bedrock as inference providers under their no-training data agreements.

Different tier ladder — see the second table below. Embeddable customers are SaaS platforms paying us per concurrent end-user seat, not per Postern account. The Free Developer tier covers sandbox and staging at zero cost.

When you need data residency in a specific region, a signed DPA, SOC 2 reports, custom SSO setup, or annual procurement budgets. Otherwise the Business tier at $79 / month covers most teams up to about 50 people.