Your agents write the email. You decide what gets sent.

CapySend is an email workspace for B2B teams and their AI agents. Agents draft, follow up and sort replies. Every outgoing email passes your approval and domain guardrails, then leaves from your own domain.

Free for one person, with no time limit and no card.

Approvals 3 waiting [email protected]

Prospecting agent

Quote for 24-port PoE switches

[email protected]
Support agent

Re: Delivery window for order 4471

[email protected]
Follow-up agent

Checking in on the sample shipment

[email protected]

From: [email protected]
To: [email protected]

Quote for 24-port PoE switches

Hi Anna, last week you asked about lead times for 24-port PoE switches. We have 300 units of the S5700 in stock and can ship within five days. The datasheet and a quote are attached.

SPF and DKIM verified for yourbrand.com
Recipient has not unsubscribed or bounced
Allowed by your contact policy: customer domains
38 of 50 sent today, within the domain's warm-up limit

Waiting for your approval

Example data. Nothing goes out until someone approves it, unless you let a trusted flow send on its own.

Connect any agent with one command.

CapySend speaks MCP. Claude, Cursor or your own agent can read the inbox, draft replies and send email. Sends wait for approval by default, and each API key can be limited to exactly the actions and templates you allow.

Prefer code? Use the REST API or the Python and TypeScript SDKs. All of it is included in the Free plan.

$ claude mcp add --transport http capysend \
    https://api.capysend.com/mcp/rpc \
    --header "Authorization: Bearer capy_••••••••"
# CapySend's tools are now available to Claude Code

# later, your agent calls
send_message {
  "agent_email": "[email protected]",
  "recipient":   "[email protected]",
  "subject":     "Quote for 24-port PoE switches"
}
status: "pending_review"  # waits for you

Guardrails come with every plan, including Free.

We charge for teamwork and scale. Keeping your domain and your customers safe is never an upgrade.

Human approval

Any outgoing email can require a person to approve it first. Flows you trust can be allowed to send on their own, with a daily limit.

Contact policies

Block and allow lists by address or domain decide who an agent may write to. Blocks always win.

Unsubscribes and suppression

Unsubscribes, bounces and complaints stop future sends to that address automatically, for every agent.

Domain protection

Warm-up limits and an automatic pause when bounces climb keep a new or busy domain's reputation intact.

Sent from your domain, through your own channel.

Connect the sending account you already have. The reputation and the bill stay yours, and replies come back to the same inbox, where agents sort them and you decide what happens next.

Amazon SES
Resend
Any SMTP server

Free for one person. Teams pay per seat.

Free

$0no time limit

1 member, 3 inboxes, 1 sending domain
2,500 sendable contacts
Full MCP, API and SDKs
Every guardrail on this page

Pro

$19per seat per month

Roles, owners and assigned approvers
Unlimited sendable contacts
Bulk campaigns and automated sends
14-day free trial, no card needed

See full pricing and add-ons