> ## Documentation Index > Fetch the complete documentation index at: https://docs.migma.ai/llms.txt > Use this file to discover all available pages before exploring further. # Deliverability & Validation > Filter risky addresses, re-validate stale contacts, and segment by validation status. ## Overview Migma validates every contact against AWS-backed email insights — flagging addresses as **valid**, **invalid**, **risky**, or **unknown** — and gives you three tools to act on those flags before they hurt your sender reputation. | Tool | Where | What it does | | ------------------------ | --------------------------------- | -------------------------------------------------------- | | Exclude risky addresses | Settings → Email → Deliverability | Skip risky addresses on every send | | Daily re-validation | Automatic | Re-check contacts whose validation is older than 30 days | | Validation status filter | Contacts → Segments | Build audiences scoped by validation flag | Open **Settings → Email → Deliverability** for the risky-address toggle and validation sweep stats. *** ## Exclude Risky Addresses Risky addresses are inboxes that almost always end up bouncing or generating spam complaints — disposable services like *mailinator.com* or *tempmail.io*, and role addresses like *postmaster@*, *abuse@*, or *no-reply@*. Sending to them won't help you and tends to actively hurt your sender score. The **Exclude risky addresses** toggle in **Settings → Email → Deliverability** filters them out at fan-out time on every campaign — they never get an envelope, and they appear in the campaign's [Skipped Recipients](/campaigns/skipped-recipients) view with reason `risky` so you can audit what was held back. Find the **Exclude risky addresses** card. The setting takes effect on the next campaign send. There's nothing to backfill — Migma re-evaluates risk at fan-out time using the most recent validation data. Open any new campaign's **Recipients → Skipped** view. Every risky address that was held back appears with a `risky` chip and the underlying flag (e.g. *disposable*, *role*). **Default off.** Many accounts run fine without this filter — flip it on if you've seen risky addresses in your bounce logs, or if you're warming a new domain and want to play it safe. *** ## Daily Contact Re-validation Even a clean list goes stale. Addresses that were valid six months ago can become invalid as people leave companies, change providers, or abandon mailboxes. Migma automatically re-validates **subscribed contacts whose validation is older than 30 days**, every night. * Runs once daily, oldest-first. * Updates each contact's validation flag and the **last validated** timestamp shown on their profile. * Capped per run to keep validation costs bounded; tomorrow's run continues where today's left off. * Newly-flagged risky addresses are skipped on the next send if you have the **Exclude risky** toggle on. You can see the rolling state — last sweep time, contacts validated this month, contacts still stale — on the **Contact validation** card in the same Deliverability settings panel. *** ## Filter Audiences by Validation Status In the segment editor, alongside the existing **Subscription status** filter, you can now scope by **Validation status** — values are *valid*, *invalid*, *risky*, and *unknown*. Combine with engagement and tag filters to triage list quality directly from the audience UI. **Subscribed, validation = risky.** Everyone you'd skip with the Exclude risky toggle. Sometimes worth reviewing manually first. **Validation = unknown.** Contacts that haven't been validated yet. Often imported in bulk before validation completed. **Subscribed, validation = valid, opened in past 90 days.** The healthy heart of your list — best target for high-stakes sends. **Validation = invalid.** Permanent failures. Export, review, and remove to keep your list lean. The contact detail view also surfaces **Last validated** so you can see when a single address was most recently checked. *** ## How the Three Pieces Fit Together Imports validate immediately; subscribed contacts re-validate every 30 days. Segment editor lets you slice by current validation flag — auditing or campaign scoping. Exclude risky drops `risky` addresses at fan-out time. Other flags still send unless you scope your audience. *** ## Related See exactly which contacts were filtered out, including by the risky toggle. The hard block list — bounces, complaints, manual additions.