Verify emails in Salesforce with Spaw

updated · September 3, 2026

Verify new Salesforce leads and contacts through Zapier or Make, store the verdict in custom fields, and clean existing records with a bulk run.

Mechanism
Through Zapier or Make
Works today
Yes, with Webhooks by Zapier or Make's HTTP module
Auth
Secret API key in the verification step
Cost
1 credit per answered lookup, undeliverable answers free

Salesforce orgs collect addresses through web-to-lead forms, list imports and integrations, and a bad address on a lead costs a rep's time before it bounces. Spaw does not publish an AppExchange package. The recommended path is a Zap or a Make scenario that triggers on a new lead or contact, verifies the address, and writes the verdict into custom fields that your reports, list views and flows can use.

Prepare the org

  1. Add three custom fields to Lead, and the same three to Contact if you verify both: a picklist or text field for the verdict, a text field for the reason, and a number field for the risk score. Names such as Email_Verdict__c, Email_Verdict_Reason__c and Email_Risk_Score__c read well in reports.
  2. Create a secret API key on the API keys page of your Spaw dashboard.

Verify new records as they are created

  1. In Zapier or Make, start with the Salesforce trigger for a new record and choose the Lead object (or Contact).
  2. Add the verification step: a Webhooks by Zapier POST or a Make HTTP request to https://spaw.co/api/v1/email with the header Authorization: Bearer sk_live_… and this body, mapping the record's email:
{
  "email": "[email protected]"
}

The Zapier page and the Make page walk through the exact settings. When the Spaw apps for both platforms are listed, the step becomes a Verify Email action with a saved connection; the fields do not change.

  1. Add a filter so records without an email are skipped.
  2. Add the Salesforce action that updates a record, pick the same object, match on the record id from the trigger, and map data.deliverable, data.reason and data.risk_score into the custom fields.
  3. Test by creating a lead with the address [email protected], one of six free test addresses that answer a fixed result and never appear in your history.

Teams that prefer to stay inside Salesforce can call the same endpoint from Apex with a Named Credential holding the bearer token; the OpenAPI document describes every request and response for that work. This page keeps to the no-code path.

Clean existing leads and contacts

Export the addresses with their record ids, run the file through a bulk verification on the Spaw dashboard or with the bulk endpoint, and load the result CSV back with a data loader, matching on the id. The result keeps your original columns and adds the verdict, reason, risk score and suggestion columns, so the mapping is one to one. Undeliverable rows also land on your Spaw suppression list, which later batch and bulk runs answer for free.

What to do with the verdict

Build list views and assignment rules on the verdict field. deliverable leads route to reps as usual. risky leads deserve a look at the reason before a sequence: catch_all means the domain accepts every address and the mailbox is unconfirmed, role means a shared inbox, disposable means a throwaway domain. undeliverable leads should be flagged rather than deleted, because a filled data.did_you_mean value, for example [email protected] for [email protected], is often a lead worth one correction. A validation rule or flow can block a lead from converting while the verdict is undeliverable.

Cost

Each new record that answers deliverable or risky spends 1 credit; undeliverable answers and repeats within seven days are free, as are the test addresses. Zapier and Make bill their own tasks. A bulk run bills per row as it is processed and verifies duplicates once.

Related

markdown version: /integrations/salesforce.md

Verify addresses the same way

The Spaw API runs every check described here on each lookup, with an SMTP handshake that never sends mail. 10 free lookups a month, no card required.

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