Per-event metered pricing
Per-event metered pricing bills each send and received message at a fixed rate. Mails.ai does not offer it; its plans are monthly or yearly.
Usage-based email pricing: every send or received message is billed at a per-event rate, invoiced at month-end, with no monthly minimum. Mails.ai does not offer it; its plans are monthly or yearly, with separate send and inbound allowances.
Each event is reported to the billing system as it happens, and the month-end invoice is their sum. There is no monthly minimum: send nothing, pay nothing.
Why teams want it
Monthly email tiers were designed for marketing-blast SaaS with predictable steady volume. Agent traffic is not that — a support agent might send 10 emails on a quiet day and 1,000 on an incident day; a 2FA bridge agent fires only when a human signs in. A monthly tier means paying for the spike all month; a metered rate means paying only for the events that happened.
Does Mails.ai offer it?
No. Mails.ai planned a metered tier in 2026 and did not launch it. Its plans are Free, Pro ($20/month) and Scale ($99/month), billed monthly or yearly (two months free). Sends and inbound replies have separate allowances, so a busy inbox never eats your sending quota.
Read metered vs monthly tiers for worked examples, or see all tiers.
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