Work out deliverability rate instantly with clear inputs, formula shown and shareable results.
Delivered is not the same as seen: mail can be accepted by the server and still land in spam. Inbox placement, which nets off estimated spam filtering, is the number that actually predicts engagement.
Deliverability
Delivery rate = (sent - bounces)/sent; inbox placement = delivered × (1 - spam rate)/sent
Figures are estimates based on the inputs given. Marketing performance, platform fees and conversion behaviour vary by audience, channel and season. Use this as a planning guide, not a forecast.
Hard bounces are permanent failures such as invalid addresses; soft bounces are temporary, like a full mailbox.
Authenticate your domain, warm up sending volume gradually, prune inactive addresses and keep complaint rates low.