“Sendsets made it trivial to add cold email to our Claude Code workflow. Solid deliverability and great docs.”
Alex R.Founder, IterateAI
OUTBOUND THAT STARTS WITH A PROMPT
Tell your coding agent who to email.
Your agent installs Sendsets, gets a mailbox ready, builds the campaign, and walks one
real prospect through it. You approve the exact email before anything launches.
Trusted by founders shipping with Claude Code
Early-stage builders, indie hackers, and GTM teams use Sendsets to power their outreach.
“We went from idea to 2,000 personalized outreach emails in a day. Sendsets just works.”
Priya S.Growth, NexaLabs
“Clean API, reliable infrastructure, and a dream to integrate. Exactly what we needed.”
Matt K.Indie Hacker
What Makes Sendsets Different:
API-first
Run Sendsets directly from Claude Code, Codex, or your own stack via API, CLI, or MCP.
Full cold email workflow
Create campaigns, build sequences, import prospects, test, launch, pause, and stop campaigns programmatically.
Sending accounts built in
Connect existing mailboxes or provision Google and Microsoft mailboxes, warm them, monitor health, and rotate senders.
Connect outbound to your product
Campaigns can call your app for individual prospects, and events inside your app can change or stop what gets sent next.
Popular cold email API endpoints
Why AI agents love Sendsets
Create, test, and launch campaigns without opening another sales tool
Connect or provision sending accounts programmatically
Manage warmup, sender rotation, replies, and campaign results from the same API
Let campaigns call your product and react to what prospects do inside it