Sendsets: the outbound API for AI agents · House #24,580

What it is

Calls itself “cold email platform”.

• Calls itself: cold email platform

“…cold email platform”

Where it puts itself

Its one line of difference: “Most cold-email platforms reward you for sending more. Sendsets rewards you for sending well.”

“Most cold-email platforms reward you for sending more. Sendsets rewards you for sending well.”

What it costs

Monthly subscription. A free tier, free forever. 4 prices listed on its pages, from $3 to $49.

• Monthly: yes
• Free plan: free forever
• Price: 4 prices, from $3 to $49

“Google Workspace Managed sending mailboxes $3 / mailbox / month”

“Azure tenants Up to 100 mailboxes per tenant $30 / tenant / month”

Who it sells to

Sells to developers. Built for teams. Made for Agencies, Founders and Sales teams.

• Sells to: developers
• Company size: teams
• Made for: Agencies · Founders · Sales teams

“The outbound API for AI agents.”

“For teams ready to launch at scale.”

How it runs

Can be self-hosted. Hosted in the cloud. Offers an API. AI is the core of the product.

• Runs where: cloud / hosted · self-hosted
• API: yes
• AI role: core to the product

“Use the hosted service or deploy the same code on your own infrastructure.”

“The outbound API for AI agents.”

What it works with

Integrates with API, CLI, Claude Code and 5 more.

• Integrates with: API · CLI · Claude Code · +5

“The outbound API to create campaigns, connect mailboxes, send cold email, and manage replies from Claude, Codex, MCP, CLI, or your own code.”

“Run cold email from Claude Code, Codex, or any MCP client.”

What it offers as proof

Live, no waitlist. Shows customer logos. Claims “2000+”. Instant signup. Publishes docs.

• Customer logos: yes
• Number claimed: 2000+
• Instant signup: yes

“Sign in”

“Trusted by 2000+ companies of all sizes”