MailStrike is an AI-powered email deliverability platform that helps businesses build sender reputation and improve the chances their messages reach inboxes rather than spam. Its core service is agentic email warmup, assigning an AI Agent to each mailbox to exchange individualized, context-aware emails through a network of real businesses. The agents adapt their writing, reply patterns, and activity hours, while MailStrike says its generated messages avoid the repetitive templates that filters can recognize.

The platform supports Google Workspace, Microsoft 365, and other mailboxes, with OAuth connections for Google and Microsoft. It checks SPF, DKIM, DMARC, and MX records during setup, and provides guidance when authentication records need attention. MailStrike also offers free deliverability tests showing inbox, promotions, or spam placement by provider, along with spam-signal assessments and recommendations. Additional services include seed lists for B2C senders, placement testing, warming for new or recovering domains, ongoing reputation maintenance, and tools for monitoring sending capacity and reputation changes. MailStrike serves founders, cold outreach teams, high-volume senders, and businesses scaling email campaigns.