Help & support

The button is added to profile pages only — URLs that look like linkedin.com/in/someone. If you are on a company page or a search results list there is no single person to look up, so it stays hidden. On a profile, reload the tab once after installing: content scripts only attach to pages opened after the extension was added.

Some companies publish no usable pattern, and some people genuinely have no discoverable work address. You are not charged for a search that finds nothing, so it costs you nothing to try a different spelling of the name or the company’s other domain.

Some domains accept mail for every address, whether or not a mailbox exists behind it, so no verifier can confirm the individual address there. Those results still show as deliverable — the address is usually worth sending to — with a small info icon that explains the domain is catch-all and a bounce is a touch more likely.

One credit per address found. A domain search that returns eight addresses spends eight credits; a search that returns none spends nothing. Free accounts get 25 credits a month and Premium 100. Credits reset each billing period and don’t roll over.

No. Verification of a finder result is included, and doesn’t touch a separate verification balance. Email Verifier is a different product, for checking lists you already have from elsewhere.

The extension holds its own copy of your access token. Open the popup and sign in from there once; it will pick up the session from your browser and stay signed in afterwards.

Every address you find is saved to your Mailsumo dashboard alongside anything Email Extractor has collected. You can search and filter there, and export the whole list to CSV or XLSX.

Open your dashboard → Billing → Manage subscription. You’ll land in the Stripe customer portal where you can cancel in a couple of clicks. Your saved results stay put; you drop back to the free monthly allowance.