Best email verifier for Google Sheets users: who lists a Sheets connection

Which one should you pick?

• Pick BounceBan if your lists are mostly catch-all B2B domains and you need each of those addresses answered rather than graded.

• Pick Verifalia if you clean a few thousand addresses once, or need multi-pass re-tries on slow mail servers, and want credits that never expire.

• Pick Hunter.io if you run cold outreach from Hunter itself and want finding, verifying and sending in one tool.

• Pick SimpleVerifier if you verify or re-check lists every month and want one flat monthly price instead of credits, with catch-all addresses kept risky rather than marked valid.

  Skip SimpleVerifier if you want the lowest price for one small list, where another vendor's pack can cost less (cost by list size); you need your data processed only inside the EU (our service providers process data in several countries, including the US); or your list is mostly Outlook.com, Hotmail or Live addresses, which Microsoft currently won't let us confirm, so they come back risky (why).

How we compared

We took the vendors whose own pages, as recorded in our dated vendor notes, name a Google Sheets connection, and priced 10,000 verifications a month from the same data. Vendors we did not record a Sheets connection for are not listed, which is not proof they have none: check their integrations pages. We did not run an accuracy benchmark, so nothing here ranks accuracy: test a shortlist on a sample of your own list, including addresses you know are dead.

Each tool in a few lines

1. 1. BounceBan

   Best for: Lists made mostly of catch-all B2B domains

   • Its pages say it verifies catch-all and SEG-protected addresses, not only flags them, and does so without sending an email; SimpleVerifier grades catch-all rows by likelihood instead.
   • Its FAQ says unused monthly or yearly credits roll over and do not expire.
   • Watch out: Its packs are priced for catch-all work, $40 for 10,000 and $300 for 100,000, so a list that is mostly ordinary domains pays catch-all rates on every address, again on every pass.

   Checked November 3, 2026: BounceBan pricing and FAQ · BounceBan home page

2. 2. Verifalia

   Best for: Buyers who need repeated passes on slow or greylisting mail servers. Its High (3 passes) and Extreme (9 passes) quality levels re-try addresses with temporary problems, and its SDKs cover .NET, Go, Java, JavaScript, PHP and Ruby

   • Small one-off jobs are cheap: 1,000 credits are $7.90 and 5,000 are $28.90, and credits from packs never expire.
   • Its High (3 passes, 50 seconds of greylisting wait) and Extreme (9 passes, 2 minutes) quality levels re-try addresses with temporary problems, at 2 and 4 credits each.
   • Watch out: The plans are daily allowances that expire at midnight, so a large list either waits for days of credits or is bought as a pack, and High or Extreme quality doubles or quadruples the credits per address.

   Checked November 2, 2026: Verifalia plans and pricing

3. 3. Hunter.io

   Best for: Outreach teams that find, verify and send in one tool

   • Hunter is a full outreach suite: domain search, an email finder and campaigns, not only verification.
   • Its integrations page lists native connections to CRMs such as HubSpot, to Gmail, Google Sheets and Zapier, plus MCP servers for AI agents.
   • Watch out: Verifications draw half a credit each from the same pool you use for finding, and on monthly billing unused credits reset every month.

   Checked November 3, 2026: Hunter pricing · Hunter integrations

4. 4. SimpleVerifier(our tool)

   Best for: A sheet you check from a menu, or clean and re-import by CSV

   • Catch-all addresses come back risky, never guessed valid
   • Connects to Instantly, Smartlead, HubSpot and Mailchimp by API key
   • Watch out: The free allowance is a one-time 100 checks, not a monthly refill
   • Watch out: Starter has no API and its allowance does not roll over; 10,000 a month needs Pro

   Checked November 10, 2026: SimpleVerifier pricing · SimpleVerifier verify

Common questions

Can I verify emails in Google Sheets?

Formulas can check an address is shaped correctly and remove duplicates, but only a verifier can confirm the mailbox. Either download the column as CSV and upload it, or call an API from Apps Script. See verifying emails in Google Sheets.

Does SimpleVerifier have a Google Sheets add-on?

No add-on in the Marketplace. There is a copy-paste Apps Script with an =SV_VERIFY formula that calls our API from your sheet, and it needs an API key, which comes with Pro and above. The CSV route needs no key.

Which route is cheapest?

At 10,000 a month the published prices in the table range from $34 to $149; Hunter bundles finding and sending, so it is not like for like. See cost by list size.

Is the cheapest verifier the most accurate?

We did not run an accuracy benchmark, so nothing here ranks accuracy: test a shortlist on a sample of your own list, including addresses you know are dead.