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Last updated September 10, 2026

Billing & Credits

MailInsightX operates on a hybrid subscription-credit model. When you subscribe to a monthly or annual plan, your account is allocated a specific quota of Standard Credits and InsightX+ Credits.

Standard vs. InsightX+ Verification

We offer two distinct layers of email validation. See Two Credit Pools: Standard vs. InsightX+ for a full breakdown of exactly which checks each one performs.

  1. Standard Verification (Standard Credits): Format checks, checking the domain can receive email, disposable-address detection, and pattern checks for generic or fake-looking addresses. Fast, and never performs InsightX+'s enhanced verification.

  2. InsightX+ Verification (InsightX+ Credits): Everything Standard does, plus a real SMTP connection to the recipient's mail server to confirm whether the specific address actually exists - without ever sending an actual email. This is the only path that can also detect Catch-All domains and greylisting/tarpitting behavior.

Warning

Because InsightX+ performs a real-time check against the recipient's mail server, InsightX+ credits are allocated in much smaller monthly batches than Standard credits.

Plan Limits

See Understanding Plan Tiers & Limits for the full, current table of Standard credits, InsightX+ credits, and file-upload limits per plan.

Monthly Resets & Rollover Policy

Caution

Credits do not roll over.

At the start of your billing cycle (or when you renew your subscription), your credits reset to the exact allocation of your current plan. Any unused credits from the previous month are forfeited - this applies to a same-plan renewal. If you genuinely upgrade to a higher tier mid-cycle, the new plan's credits are added on top of your existing balance instead, so you don't lose what you haven't used yet.

If you find yourself consistently running out of credits, open the Billing tab in your Dashboard to upgrade your plan or purchase a one-time InsightX+ top-up.