Do email verification credits expire?

Here is the expiry rule at each vendor, read on each one's own pricing page in September 2026. Kickbox: one year from purchase. Hunter: 12 months. ZeroBounce: credits roll over while a subscription stays active. Emailverify.io: pay-as-you-go credits never expire, and subscription credits roll for two months. Verifalia: bought credits never expire, while its daily free credits lapse each day. Bouncer, Emailable, Clearout, MillionVerifier, DeBounce and EmailListVerify: never.

Expiry exists to make revenue predictable. A balance that disappears turns an open liability into booked income on a schedule. That suits the vendor, and you pay for it if you bought ahead.

The cost lands on the exact buying pattern the price list rewards. Volume discounts push you toward a large block, and expiry punishes you for not using it fast enough. Most list cleaning is periodic, so a year-long deadline on a 100,000-credit block is a real constraint. Our expiry cost example works the numbers through.

It also bends how you use the service. Credits that run out in November produce cleanups done because the balance is ending, not because the list needed checking.

Read the terms as well as the pricing page. Expiry is usually written into the terms of service, and the wording separates credits that expire from accounts that go dormant. Those are different rules, and you want to know both.

ZapBounce credits never expire, on every pack from $5 for 1,000 to $949 for 1,000,000. A monthly plan costs 15% less than the same credits pay-as-you-go, and its unused credits roll over while the plan is active. See the full price list or the Kickbox comparison for the side-by-side.

Say you buy Kickbox's 100,000 pack in January for $500, the price on kickbox.com on 24 September 2026, where credits expire one year from purchase. Your plan is sensible: clean a 20,000-address list once a quarter. By December you've run four cleanups and used 80,000 credits.

In January the last 20,000 vanish. You paid $500 and received 80,000 checks, so each check you used cost a quarter more than the pricing page showed. That's a 25% markup, and it never appears on an invoice. The same 100,000 credits from us cost $139 and stay on the account until you use them.

The volume discount is what led you there. Buying 100,000 at once was cheaper per credit than buying 20,000 four times, so the price list steered you to the big pack. The expiry clause then punished you for not using it fast enough. Without an expiry date, the same purchase is simply a good deal.

Open the vendor's terms and search for four words: expire, forfeit, inactive and dormant. Expiry rules rarely sit on the pricing page, and those words find the clauses that matter.

Check whether a new purchase resets the clock on old credits. Some vendors extend everything when you buy again, which turns expiry into a nudge to keep buying.

Look for a dormancy rule as well. An account that closes after a year without a login can take a never-expiring balance down with it. Read the two clauses together. It's also worth knowing whether unused credits can be refunded, and within how many days.

Bonus and free credits often follow different rules from paid ones. That's true of ours too: the free monthly checks reset each month, and the credits you buy stay until you use them. If a vendor's terms are silent on any of these points, email and ask, and keep the reply.