Disposable
Temporary inboxes designed to be abandoned. High abuse and bounce risk after capture. Most teams block or challenge.
Guide · quality flags
Understanding risky emails: accept-all, disposable, and role
How ValidReach quality flags work — and how to write a clear risk policy your product and marketing teams can share.
Flags
What each signal means
Flags appear alongside top-level results in the dashboard, list jobs, and API.
Accept-all
Domain accepts any local part. The mailbox may or may not exist. Treat carefully — often mark as risky and apply policy.
Role
Addresses like info@, sales@, support@. Valid mailboxes, but often shared and lower engagement for marketing.
Free
Consumer free-mail providers. Not automatically bad — useful signal for B2B vs B2C policies.
Policy patterns
Block, challenge, or allow — deliberately
Block
Disposable and clear undeliverable at signup when abuse risk is high.
Challenge
Ask for a work email, double opt-in, or CAPTCHA when flags fire.
Allow with limits
Accept free or role addresses for product use, but exclude from paid promos.
Document once
Write the policy for product and marketing so API, lists, and UI stay aligned.
Encode policy in code
Same flags in UI, lists, and API
Start free. Unknown results never burn credits.