Leads & lists5 steps

Blocklist: blocking emails and whole companies

Paste or upload addresses and company domains that must never be contacted; they are refused at import, skipped at enrolment, checked again at send time, and anyone already in your leads who matches is stopped everywhere.

Where: Settings → Blocklist → Add to blocklist / Upload CSV · Blocked emails & companies · Blocked people

How to do it

  1. Open Settings → Blocklist. The three counters show Blocked emails, Blocked companies and Blocked people.
  2. In Add to blocklist, paste emails, company domains or website links one per line (commas and semicolons also separate), e.g. jane@acme.com, acme.com, https://www.competitor.co.uk. Click Add to blocklist.
  3. Or click Upload CSV and choose a .csv or .txt file — any column containing emails or domains is picked up, so a Smartlead or Instantly export works as-is.
  4. Read the result line: "N added · M already listed · K existing leads blocked and stopped in campaigns · J ignored (not an email or domain)".
  5. Find entries under Blocked emails & companies with the All / Emails / Companies filter and the Search box; click the trash icon to remove one.

Good to know

  • Formats are normalised: addresses are lowercased; "Name <jane@acme.com>" keeps the address; "@acme.com", "https://www.acme.com/about" and "acme.com" all become the domain acme.com. A domain entry blocks everyone at that company. Junk lines are ignored and listed back to you (first 3 shown).
  • Where it is enforced: CSV import (rows reported "On your blocklist — not imported"), Lead Database adds and exports ("N on your blocklist"), enrolling a list into a campaign (blocked people are skipped), and every send — a lead blocked after enrolment is moved to Blocked ("On the blocklist — not sent") and stopped in every campaign.
  • Adding an entry immediately moves any matching lead that is not already suppressed to Blocked and stops their active or paused enrolments in every campaign.
  • Removing an entry does NOT unblock people already moved to Blocked — use Unblock under Blocked people for that.
  • Uploads: up to 200,000 entries per file, sent in chunks of 10,000; the table shows the latest 2,000 entries (use search for older ones). Source column shows manual, csv: <filename>, or blocked from a reply.
  • Blocked people also lists everyone who unsubscribed. Click Unblock to return a person to New so a list can enrol them again; their address entry is removed with them. A company-wide domain entry added by hand stays — remove it separately if it should not apply.

More in Leads & lists

Leads & listsBrowsing, searching and filtering your leadsThe Leads page is every person in your workspace in one table, with a search box, Status and Campaign filters, and a Columns picker that includes every column you ever imported.Leads & listsCreating and deleting listsLists are the folders your leads live in; a lead belongs to one list at a time, and deleting a list permanently deletes the leads in it.Leads & listsImporting leads from a CSVUpload a CSV, map each column to a field (only Email is required), and the import runs on our servers in the background — each new lead takes room in your workspace; updates are free.Leads & listsDaily Drip: verify a big list a set number a day, into one or more campaignsUpload a list of up to 50,000 once. On each campaign's sending days, just before its window opens, MailFleet checks that campaign's share of the next addresses with your plan's daily email checks and adds the results you choose to it — so you don't need checks for the whole list up front, or to upload it in chunks.

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