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Courier bills $0.005 per notification sent, first 10,000 free, and the meter counts notifications, not channels. Three worked 30-day bills and the one lever that cuts them.
As of July 2026, Knock's notification API charges per message, where a message is one delivery to one user on one channel. The Starter plan is $250 per month for 50,000 messages, then $0.005 each. Because Knock meters per channel, a single notification sent to email, push, and in-app counts as three messages, so a 5,000-user app fanning three channels can run about $750 per month. The same alerts cost roughly $250 on Courier's per-notification meter and about $54 on Novu's per-run Pro plan. Match the meter to your channel fan-out before you pick a vendor.
