InboxKit has reached $18M ARR in an impressive 16 months, showcasing exponential growth driven by their commitment to customer satisfaction and solving critical cold email infrastructure challenges.

With over 800K+ mailboxes managed across platforms like Google Workspace, Microsoft 365, and Azure, the company has rapidly expanded its customer base and proven its scalability.

The team attributes its success to a combination of visionary leadership from founder Rahul Lakhaney, the hard work of an innovative team, and early adopters who believed in the product. Their future ambitions are set on reaching $100M ARR.