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.

Free tier shows a warning at 80% usage; the cap is hard at 50. Paid tiers either include unlimited generations or refresh monthly — there are no overage charges. If you keep hitting the cap, that’s a signal to upgrade.

No. If you’re on Starter with 500 / month and use 300, the remaining 200 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 tier (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 covers most teams up to about 50 people.