MailTooth
MailTooth verifies single email addresses and lists, returning evidence for safe, risky, or invalid results.
What MailTooth is
MailTooth verifies single email addresses and lists, returning evidence for safe, risky, or invalid results. Users can upload CSV or TXT files, choose an email column and verification depth, then download the completed results. Quick checks use 0.5 credit, Standard checks use 1 credit, and Deepcheck uses 2 credits. Depending on depth, checks can cover syntax, domain and MX signals, disposable or role-based addresses, email authentication records, blocklists, WHOIS, SMTP mailbox status, and catch-all behavior. Single-address and bulk APIs support programmatic use. A JavaScript integration can check form fields before submission using configurable blocking rules. The Chrome side panel can discover and verify addresses while browsing, then save them to lists or export them as CSV. Workspaces organize credits, keys, lists, and activity, with owner, admin, member, and viewer roles. MailTooth also connects campaigns through Resend and offers a remote MCP verification tool, which handles one email per call. The free plan includes 100 credits without a card; one-time paid credit packs start at 11.00 USD for Starter.
Good
- Supports both individual and bulk verification.
- CSV and TXT uploads allow column and depth selection.
- Offers API access and a Chrome side-panel extension.
- Free plan includes 100 credits without a card.
- Workspaces include four role types.
Watch out
- MCP verification handles only one email per call.
- Large datasets are directed to bulk verification.
- Online security cannot be guaranteed absolutely.
Who it suits
MailTooth suits people who need to verify individual addresses or email lists, whether through uploads, an API, a browser extension, or form checks. Teams may find its workspace roles useful for organizing access and activity.
Verdict
MailTooth offers several ways to verify addresses, from uploaded lists to API calls and form checks. Its credit-based depths make it important to consider how many checks a workflow needs.
Plans and prices
From MailTooth's own pricing page, checked 11 Oct 2001.
| Plan | Price | What it gives you |
|---|---|---|
| Free credits | Free | 100 credits · up to 200 Quick checks, 100 Standard checks, or 50 Deepchecks · no card required |
| Starter | $11, paid once | 3,600 credits · 7,200 Quick checks · 3,600 Standard checks · 1,800 Deepchecks · credits never expire · one time |
| Growth | $27, paid once | 10,200 credits · 20,400 Quick checks · 10,200 Standard checks · 5,100 Deepchecks · credits never expire · one time |
| Pro | $72, paid once | 32,600 credits · 65,200 Quick checks · 32,600 Standard checks · 16,300 Deepchecks · credits never expire · one time |
| Scale | $111, paid once | 55,000 credits · 110,000 Quick checks · 55,000 Standard checks · 27,500 Deepchecks · credits never expire · one time |
The facts
Each one read from MailTooth's own pages, with the date it was checked.
What it does
- API
- The service offers single-address and bulk verification APIs for programmatic verification.checked 11 Oct 2001
- Bulk workflow
- Users can upload CSV or TXT files in the dashboard, select an email column and verification depth, and download completed results.checked 11 Oct 2001
- Checks
- Depending on depth, checks include syntax, MX and domain signals, disposable and role-based addresses, SPF/DKIM/DMARC, blocklists, WHOIS, SMTP mailbox verification, and catch-all behavior.checked 11 Oct 2001
- Chrome extension
- The Chrome side-panel extension discovers and verifies addresses while browsing and can save results to lists or export them as CSV.checked 11 Oct 2001
- Form protection
- A one-line JavaScript integration checks email fields before form submission and supports configurable blocking rules.checked 11 Oct 2001
- Integrations
- MailTooth supports campaigns through connected Resend accounts and exposes a verify_email tool through a remote MCP server for compatible AI clients.checked 11 Oct 2001
- Limits
- The MCP verification tool handles one email per call; MailTooth directs large datasets to bulk verification.checked 11 Oct 2001
- Privacy and retention
- MailTooth processes verification inputs, results, bulk files, and usage records, and retains information as reasonably necessary for service, legal, dispute-resolution, and abuse-prevention purposes.checked 11 Oct 2001
- Product
- MailTooth verifies individual email addresses and lists and shows evidence for safe, risky, or invalid results.checked 11 Oct 2001
- Security
- The privacy policy says MailTooth uses administrative and technical safeguards, while noting that no online service can guarantee absolute security.checked 11 Oct 2001
- Support
- The site lists [email protected] as its contact address.checked 11 Oct 2001
- Verification depths
- Quick costs 0.5 credit, Standard costs 1 credit, and Deepcheck costs 2 credits.checked 11 Oct 2001
The company
- Team features
- Workspaces support owner, admin, member, and viewer roles, with credits, API keys, lists, and activity organized per workspace.checked 11 Oct 2001
Alternatives to MailTooth
- 1
LeadLeaper
Free planAndroidiOSWebExtension7.9From $29 a month - 2
Datagma
Free planWebAPIExtension7.5From $39 a month - 3
SignalHire
Free planWebAPIExtension7.1Free plan - 4
ContactOut
Free planWebAPIExtension7.0Free plan - 5
GetProspect
Free planWebAPIExtension7.0From $49 a month - 6
Kaspr
Free planAPIExtension7.0From $49 a month