Warmbox
Email warmup tool to ensure cold emails never land in spam.
How to connect
What your agent can do
Connect Warmbox
Starter prompt
“Claude, check the warmup status of my 'sales-outbound' inbox in Warmbox and report its deliverability score.”
About Warmbox
Warmbox provides an API for programmatically managing email warmup schedules and monitoring deliverability metrics. It automates the process of sending and replying to emails between your inbox and a network of thousands of other accounts to build sender reputation. By integrating the Warmbox API, sales teams can ensure their cold outreach infrastructure is always optimized for high inbox placement.
Similar tools
Folderly
AI-powered email deliverability and warmup API.
Instantly.ai
The gold standard for cold email infrastructure and automation.
Lemlist
Sales engagement platform with advanced personalization and outreach APIs.
Smartlead
Scale outreach with unlimited mailboxes and AI-powered deliverability.