# Block List and the do-not-contact check

Source: https://listplus.ai/en/help/check-and-clean/do-not-contact-and-block-list
Last updated: 2026-09-28

ListPlus has two ways to catch contacts you shouldn't email: a Block List you
maintain yourself, and an automatic check for clearly unreachable addresses.
Both surface as checks in the **Analyze** panel — see "What the Analyze panel
checks and how the quality score works" for how checks and selections work in
general.

## What is the Block List for?

The Block List under Settings holds email addresses and domains that must
never be used in a campaign, one per line. The data quality checks then flag
every row in your lists that matches an entry, so you can exclude those
contacts before exporting. It does not filter search results or enrichment.

## Where the Block List lives and how it works

Open it from the Settings panel (the gear icon at the bottom of the left
rail, tooltip "Settings") → **Block List**, or via **⌘K** → "Open Block List". There's one
Block List per **workspace**: every member of the workspace sees the same
entries and can add or remove them, and it's checked against every list in
that workspace — you add an entry once, not per list. If you work in several
workspaces, each has its own Block List (see "[What is a workspace?](https://listplus.ai/en/help/workspaces/what-is-a-workspace)"). Type or paste entries into the
box, one per line (commas and semicolons also work), and click **Add**.
ListPlus detects the type automatically: anything with an `@` is treated as
an email, anything else as a domain (e.g. `example.com`); duplicates are
skipped and a confirmation shows how many were added and how many duplicates
were skipped. Hover an entry in the list and click the trash icon to remove
it. There's no bulk file import — paste multiple lines at once instead.

## What gets flagged, and how domain entries match

A domain entry blocks every email at that domain, not just one address — add
`competitor.com` once and any `@competitor.com` email in any list of the workspace is
flagged. Matching is exact, not by subdomain: `competitor.com` does not match
`mail.competitor.com` — add that subdomain separately if you need it blocked
too. Don't start a domain entry with `@`; ListPlus treats anything containing
`@` as an email, so `@competitor.com` would be stored as a literal (and
useless) email address instead of a domain. The check needs an email column
to run; lists without one aren't checked. Matching is case-insensitive.

## Block List vs. the automatic do-not-contact check

These are two separate checks. **On Global Block List** only flags addresses
and domains you added yourself. **Do-Not-Contact Email** is automatic and
needs no setup: it flags addresses that are clearly not a person, such as
`noreply@`, `unsubscribe@`, `bounce@`, `mailer-daemon@` or `postmaster@`,
regardless of what's in your Block List.

## What it does not do

The Block List only affects the two checks above. It does not filter
Segment Search results, does not block enrichment lookups, and does not
remove anything from a file export — a blocked row can still end up in an
export if you don't act on the check first. Use **Select N rows** on the
check (see "[Selecting and highlighting rows from checks](https://listplus.ai/en/help/check-and-clean/select-rows-by-checks)"), delete or exclude
those rows, and click **Save** before exporting or sending a campaign.

**Related topics:** quality-checks-overview · select-rows-by-checks ·
gdpr-your-responsibilities (the legal "right to object" behind this feature) ·
fixing-issues.

## FAQ

### How do I flag an email or domain so I never contact it by mistake?

Open Settings (the gear icon in the left rail) → Block List, or press ⌘K and search "Open Block List", paste the email or domain, one per line, and click Add. From then on the "On Global Block List" check flags every matching row in your lists. Nothing is hidden or deleted automatically.

### Can I block a whole domain, not just one email?

Yes — enter the domain alone (e.g. `example.com`, without `@` or `www.`) and every email at that domain is flagged, in any list of the current workspace.

### Does the Block List apply to one list or all of them?

There is one Block List per workspace, checked against every list in that workspace, not a separate list per project. Every member of the workspace sees and can edit the same entries; if you work in several workspaces, each one has its own Block List.

### Can I upload a CSV of addresses to block?

There's no file upload for the Block List; paste the addresses or domains into the add box, one per line (or comma/semicolon-separated), and click Add in one go.

### Does adding someone to the Block List stop them from appearing in Segment Search or being enriched?

No — the Block List only drives the "On Global Block List" check on rows already in your lists. It doesn't filter Segment Search results and doesn't block enrichment lookups.

### Does the Block List remove blocked rows from my export automatically?

No — a flagged row still exports unless you act on it first. Use the check's Select N rows to select the blocked rows, then delete them and click Save before exporting.

### What's the difference between the Block List and the do-not-contact check?

The Block List only flags entries you added yourself. The separate Do-Not-Contact Email check is automatic and always on — it catches addresses like noreply@, unsubscribe@ or postmaster@ without any setup.

### How do I remove an entry from the Block List?

Open Block List, hover the entry, and click the trash icon next to it.