Start free. Every tier gets the full delivery engine: retries, DLQ + replay, signed payloads. Reliability by default. You pay for volume, retention, and rate limits.
Checkout is handled by Paddle.com — our merchant of record. They bill you in USD, handle VAT/sales tax worldwide, and send the receipt. Cancel any time from the Paddle customer portal.
What happens after I pay?
Your account is already live — you created it at signup, and your API key works right now on the free tier. Payment upgrades that same account, usually within a minute of checkout: Paddle sends us a signed event and we flip your tier automatically. You'll get a receipt from Paddle by email; that email is also how you manage or cancel the subscription later.
Do you handle VAT / sales tax?
Yes — Paddle is the legal seller of record. They calculate, collect, and remit VAT/GST/sales tax for every jurisdiction. The price you see at checkout is the price you pay; taxes are added and handled transparently.
What if I go over my monthly quota?
We won't silently drop events: once you hit the cap, further enqueues return a
clear 429-style error you can alert on. Need more? Upgrade, or
email us for a custom volume tier.
Can I cancel?
Any time, from a link in your Paddle receipt emails or the Paddle customer portal. Your key keeps working to the end of the paid period; nothing renews after that. Full details in our terms of service.
What if I want a refund?
Email dylan@heraldq.com within 14 days of a charge and we'll
refund it in full via Paddle — no questions, though we'd love to know what
went wrong.
What if my receiver is down for a week?
Retries run for 34 hours across 15 attempts; anything that never lands parks in your dead-letter queue (7/30/90 days by tier) and can be replayed with one call once you're back.
3000 per minute rate limit too slow? Sending more than a million webhooks a month? Email
dylan@heraldq.com to talk to us about enterprise / custom requirements.