Argorant

You wrote the email to the right person at the right company, and it bounced back within a minute. To sell to another company you need that person's work email, and addresses guessed from a name pattern often bounce. In Argorant you describe your buyers in plain English by industry, country, company size and role. The number of matching companies updates while you narrow the search. The site counts 630.7 million contact records across 202 countries.

At the moment you export them, addresses are checked with their mail server, and no message is sent in the process. Addresses that fail are filtered out, and the site says they are never charged. Checked contacts can go to HubSpot or another CRM, or straight into a campaign.

Campaigns go out from your own Google Workspace or Microsoft 365 mailboxes. New mailboxes are warmed up first, and each account has a daily sending cap. A sequence stops for a person as soon as they reply. Replies from all mailboxes are collected in a shared inbox and sorted into labels like interested, meeting booked, out of office or not now.

Through an MCP connector, Claude or ChatGPT can run the same search and campaign setup. Before sending, the agent shows the contacts and the drafted emails. The terms forbid mailing people who have opted out, and the site has a form where anyone can ask to be removed from the database.