Mailjinn is an email outreach platform for outbound teams, bringing lead verification, campaign sending, inbox management, and customer relationship tools into one workspace. Users can import contact lists, check addresses for invalid or risky results, warm up mailboxes, and create email sequences with follow-ups that respond to whether a lead replies. Mailjinn also provides a unified inbox for reviewing conversations, identifying interested prospects, and tracking tasks and pipeline progress.

The service can be managed through its dashboard or connected to AI agents such as Claude and ChatGPT using its MCP tools. Agents can help prepare campaigns for human review, while users retain control over steps such as checking recipients and mailboxes before launch. Mailjinn supports Google Workspace and SMTP connections.

A free option includes up to 100 contacts per list and one mailbox, with no credit card required. Paid monthly plans add larger list capacities, unlimited mailboxes, email verification, inbox warmup, and unified inbox and CRM features. Plans start at $19 per month; daily sending limits apply.