# MailboxValidator review (2026): is the free plan enough? > Email validation by bulk list upload or API Checked Nov 13, 2026 ยท graded Nov 13, 2026 by ToolGPA. MailboxValidator checks email addresses for validity, disposable domains and role accounts. Lists can be uploaded for one-time cleaning with a bulk plan, or checked through an API on a monthly subscription. Credits on bulk plans are valid for 30 days, and Yahoo addresses are not supported at present. - **Category:** Email Verification & Deliverability - **Made by:** MailboxValidator.com - **Website:** https://www.mailboxvalidator.com - **Runs on:** Web - **Who should skip it:** Tight if you stay free, as API-FREE is 300 queries a month. - **Facts last checked:** Nov 13, 2026 ## Pricing As of Nov 13, 2026, MailboxValidator has a free plan, and paid plans start at $29.95 per month for 3,000 queries. - **Pricing model:** Free plan - **Free plan:** API-FREE plan: 300 queries a month, auto-renewing. - **Free trial:** None listed. | Plan | Price | What you get | | --- | --- | --- | | API-FREE | $0 | 300 queries per month with standard support. | | API-3 | $29.95 per month for 3,000 queries | Auto renewal and recharge with email support. Next steps: $69.95 for 15,000, $139.95 for 75,000, $339.95 for 375,000. | | BULK-1 | $19.95 one-time for 1,000 queries, valid 30 days | Upload a list to clean. Larger packs: $59.95 for 10,000, $199.95 for 100,000 and $699.95 for 1,000,000. | | BULK-TRIAL | $0 | 100 free queries, valid for 30 days, for trying the bulk upload. | Read from https://www.mailboxvalidator.com/plans on Nov 13, 2026. Prices change, so confirm with MailboxValidator before buying. ## Key features - **Bulk list cleaning:** Buy a pack of queries with no setup fee or subscription and upload a list of emails to be validated. - **Email validation API:** Subscription API plans let a website or program check addresses on demand, with auto renewal and auto recharge. - **Disposable and role detection:** Separate validation pages cover disposable email, role email and domain checks alongside the main email check. - **SDK modules and extensions:** The site lists SDK modules and extensions for developers integrating the API. - **Listed integrations:** Integrations include Mailchimp, SendGrid, AWeber, Mailgun and ActiveCampaign, with a longer list on its integrations page. ## Good for - Developers who need a small free monthly API allowance - One-off list cleaning without a subscription - Small senders buying a few thousand checks ## Worth knowing - The plans page says Yahoo email validation is not supported at the moment. - Bulk plan queries are valid for 30 days, so unused queries lapse. - Higher-volume bulk packs have longer stated support response times, up to 72 hours. - Larger bulk packs above 100,000 queries are listed up to 1,000,000. ## ToolGPA grades **GPA: 2.2 out of 4**, graded Nov 13, 2026. MailboxValidator checks addresses by bulk upload or API, with a free 300 queries a month. Its paid plans start at $29.95 for 3,000 queries, bulk queries lapse after 30 days, and Yahoo validation isn't supported at the moment. - **Value for money: C.** $29.95 a month for 3,000 queries, or $19.95 for 1,000 bulk queries, around the category's $23 middle for far fewer checks. - **Free plan and trial: C.** API-FREE gives 300 queries a month, renewing, which a list will pass. Bulk has 100 free queries valid 30 days. - **Features: C.** Bulk cleaning, an API, disposable and role detection and SDKs. But the plans page says Yahoo validation isn't supported at the moment. - **Ease of use: C.** No store rating on record. You upload lists or call the API. - **Platforms and integrations: B.** Web with Mailchimp, SendGrid, AWeber, Mailgun and ActiveCampaign links, plus SDK modules. These are ToolGPA's own grades. Graded from this listing, whose facts were read from MailboxValidator's own pages on 13 November 2026. Not based on using the product, and shorter than our full reviews. ## Where it stands among email verification and deliverability tools - MailboxValidator's GPA of 2.2 is higher than 23 of the 61 other email verification and deliverability tools we grade, and level with 13. - It stands best on platforms and integrations (B, above 28 of 61) and worst on features (C, above 0). - Its paid plans start at $29.95 a month, against a middle price of $21.50 for the category: 28 of the 43 others that charge start lower. - On features, ease of use and platforms it scores 2.3 out of 4. 7 tools score higher and cost less. The category's chart of price against score: https://toolgpa.com/charts/email-deliverability ## Keep it, or make your own? **Keep it.** Nothing MailboxValidator does is plain enough to make in a weekend. The 2 things listed below take a company. It costs $359.40 a year. - You could not: Checking that an address exists without writing to it. - You could not: It plugs into other products, Mailchimp, SendGrid and AWeber among them, and has an API. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. ## Works with Mailchimp, SendGrid, AWeber, Mailgun, ActiveCampaign **Tags:** Email verification, Public API ## Alternatives - [ZeroBounce](https://toolgpa.com/tools/zerobounce): Email list verification with warm-up and DMARC monitoring in one plan. [Compare](https://toolgpa.com/compare/mailboxvalidator-vs-zerobounce) - [NeverBounce](https://toolgpa.com/tools/neverbounce): Email list cleaning and real-time verification, now part of ZoomInfo. [Compare](https://toolgpa.com/compare/mailboxvalidator-vs-neverbounce) - [mailboxlayer](https://toolgpa.com/tools/mailboxlayer): Email validation API that returns a JSON quality score. [Compare](https://toolgpa.com/compare/mailboxlayer-vs-mailboxvalidator) - [Abstract Email Validation](https://toolgpa.com/tools/abstract-email): Email validation API: format, MX and SMTP checks in one call. [Compare](https://toolgpa.com/compare/abstract-email-vs-mailboxvalidator) - [Emailable](https://toolgpa.com/tools/emailable): Email list verification with inbox reports and blacklist monitoring. [Compare](https://toolgpa.com/compare/emailable-vs-mailboxvalidator) ## Sources The prices, plans, platforms and features above were read from these pages on Nov 13, 2026: - https://www.mailboxvalidator.com/plans - https://www.mailboxvalidator.com/ Page: https://toolgpa.com/tools/mailboxvalidator Listed by ToolGPA (toolgpa.com).