Remove Disposable Emails From Signup Data Before It Reaches Your CRM

Disposable addresses distort activation reports, inflate CRM counts, and create support records tied to inboxes that vanish. The safest response is not always a hard form rejection. For many products, quarantine is better: let the user explore, but hold the record out of lifecycle email and sales routing until they provide a durable address.

The Bulk Email Verifier marks each row with isDisposable, isFreeProvider, isRole, syntax status, and MX status.

Audit a signup export

Export the newest unverified signups and send only the email column:

from apify_client import ApifyClient
import os

client = ApifyClient(os.environ["APIFY_TOKEN"])
emails = [row["email"] for row in new_signups]
run = client.actor("thirdwatch/email-verifier").call(
    run_input={"emails": emails, "checkDomainHealth": False}
)
checks = list(client.dataset(run["defaultDatasetId"]).iterate_items())
by_email = {row["email"].lower(): row for row in checks}

Domain-health checks are unnecessary for this first-pass use case, so disabling them shortens the run.

Keep disposable and free-provider logic separate

A disposable address belongs in a quarantine queue. A free-provider address may simply indicate a consumer or a small business. A role address such as support@ can be useful for account-level communication even if it is a poor sales lead.

for signup in new_signups:
    check = by_email[signup["email"].lower()]
    if check["isDisposable"]:
        signup["email_state"] = "temporary"
        signup["marketing_eligible"] = False
    elif not check["syntaxValid"] or not check["mxFound"]:
        signup["email_state"] = "invalid"
        signup["marketing_eligible"] = False
    else:
        signup["email_state"] = "accepted"

Store the reason, the checked date, and the Actor version with the decision. That small audit trail is useful when a customer asks why messages stopped.

Add a recovery path

Prompt quarantined users for a work or permanent address at the moment they request an export, invite a teammate, or start a trial. Those are better verification moments than the first page view. Re-run only the replacement address and update the CRM record when it passes.

This approach keeps acquisition friction low without allowing temporary inboxes to contaminate downstream reporting.