---
title: Send Mail
description: "Send an email through an SMTP server over the SIM's data connection, to verify delivery works from the mobile network and through carrier NAT."
lastUpdated: "2026-09-23"
---

> **For AI agents:** the complete documentation index is at [llms.txt](/llms.txt). Append `.md` to any page URL for its markdown version.

Send an email through an SMTP server over the SIM's data connection. Verify that email delivery works from the mobile network, including through carrier-grade NAT and SMTP filtering.

## Parameters

| Parameter | Required | Description |
| ----------- | ---------- | ------------- |
| SMTP server | Yes | The SMTP server address. |
| SMTP account | Yes | Credentials used to send. |
| Recipient | Yes | Destination email address. |
| Subject | No | Email subject. |
| Body | No | Email content. |
| Send should fail | No | Invert the verdict, for SMTP that must be blocked. |

Plus the shared [connection settings](/tests/actions/cellular/overview#connection-settings).

## Results and metrics

In the action report (`result`): the send `status` and the `duration` in seconds.

In Analytics, each run feeds the email send measurement with `duration_seconds`, tagged by status, APN, antenna, and access technology.

## What's next?

<Columns cols={2}>
  <Card title="API Call" icon="cloud" href="/tests/actions/cellular/api-call">

    Test any HTTP service the same way

</Card>
  <Card title="SIM steps overview" icon="sim-card" href="/tests/actions/cellular/overview">

    Assertions, stored variables, and shared options

</Card>
</Columns>