Integrations
SimpleVerifier connects natively to Instantly, Smartlead, HubSpot and Mailchimp (connect them on the Integrations page in your account, on any plan including the free checks; daily auto-verify needs a paid plan; lemlist and Brevo connectors are in beta, request access), to Google Sheets, to Chrome through an extension, to your sign-up forms through a free widget, and to your own code through the REST API, Node.js and Python SDKs and an MCP server. The Sheets script, extension, API, SDKs and MCP server use your API key, which comes with the paid plans. For any other tool, export the list as a CSV, verify it and import the clean file back.
Spreadsheets and outreach tools
- Google SheetsPaste one Apps Script, then verify a selected column or use =SV_VERIFY and =SV_PHONE_FORMAT formulas.Set it up
- InstantlyNative, liveConnect your Instantly key, pick a campaign and verify every lead. Optionally remove or block invalid ones.Set it up
- SmartleadNative, liveConnect your Smartlead key, pick a campaign and verify every lead. Optionally remove or block invalid ones.Set it up
- HubSpotNative, liveConnect a HubSpot service key, pick a list or segment and write each result to an sv_status property.Set it up
- MailchimpNative, liveConnect your API key, pick an audience or segment and write each result to an sv_status merge field.Set it up
- lemlistBeta, request accessBuilt and in beta: connect your lemlist key, pick a campaign and tag each lead with its result. Until you have access, use the CSV route.See the beta
- BrevoBeta, request accessBuilt and in beta: connect your Brevo API key, pick a list and write each result to an SV_STATUS attribute. Until you have access, use the CSV route.See the beta
Automation platforms
In your browser and on your forms
- Chrome extensionFree: find the emails and phone numbers on any page and check them in your browser. Sign in for 50 live checks a month.Set it up
- Sign-up form widgetOne script tag catches typos, throwaway addresses and role inboxes on your forms. Free, no key.Set it up
- WordPress pluginCheck emails on sign-up, comments, WooCommerce, Contact Form 7, WPForms and Gravity Forms. Needs Pro or higher.Set it up
For developers and AI assistants
- REST APIVerify an email or validate a phone number with one GET or POST. 120 calls a minute per key.Set it up
- Node.js and Python SDKsTyped clients with retries and a bulk helper.Set it up
- MCP serverLet Claude, Cursor or another MCP client verify addresses and check phone formats with your key.Set it up
Verify an export
Step-by-step export and re-import guides for 45 tools. See them all.