---
title: "Email Testing with Mailpit and .NET Aspire - Air Market"
description: "Testing email is awkward because real sending means real inboxes and real mistakes. This captures everything your app tries to send so you can look at it locally. Reach for it while building or testi…"
canonical: "https://airmarket.ai/app/mailpit-integration"
---

[Air Market](/) / [Developer Tools](/category/devtools) / Email Testing with Mailpit and .NET Aspire

Skill by [Aaron Stannard](/@aaronontheweb)

# Email Testing with Mailpit and .NET Aspire

Test the emails your app sends without sending any

## What this does

Testing email is awkward because real sending means real inboxes and real mistakes. This captures everything your app tries to send so you can look at it locally. Reach for it while building or testing anything that emails people.

### Top 3 things it does for you

- Catch outgoing email locally instead of delivering it
- See how my email actually renders
- Check email headers on a message my app sent

## Information

**Email Testing with Mailpit and .NET Aspire at a glance**

|  |  |
| --- | --- |
| Kind | Skill |
| Publisher | [Aaron Stannard](/@aaronontheweb) |
| Category | [Developer Tools](/category/devtools) |
| Works with | Agent Skills - an open standard supported by 40+ agents |
| Size | 11 KB |
| Licence | MIT |
| Repository | [Aaronontheweb/dotnet-skills](https://github.com/Aaronontheweb/dotnet-skills/tree/316756fb309b9ee42d86d5db0d70504d62f3b0c3/skills/aspire-mailpit-integration) |
| GitHub stars | 1,123 (as of Nov 2026) |

## Security report

**Verified.** AIR scanned this exact version of Email Testing with Mailpit and .NET Aspire and flagged nothing. AIR's verdict: **safe**.

**What Email Testing with Mailpit and .NET Aspire's check was run against**

|  |  |
| --- | --- |
| Commit | 316756fb309b9ee42d86d5db0d70504d62f3b0c3 |
| Content hash | ead040e950449ccc2065e7f50b1805fb3196a31acb0732f0afd9b5270315a4a1 |
| Files read | [Browse the files at this exact commit](https://github.com/Aaronontheweb/dotnet-skills/blob/316756fb309b9ee42d86d5db0d70504d62f3b0c3/skills/aspire-mailpit-integration/SKILL.md) |

A scan is named by the exact content it read, not by a version number. A different version is a different artifact, and nothing here applies to a version AIR has not scanned.

[Read the full security report for Email Testing with Mailpit and .NET Aspire](/security/mailpit-integration)

## About Email Testing with Mailpit and .NET Aspire

This skill sets up local email testing with Mailpit and .NET Aspire, capturing all outgoing mail from your app instead of sending it.

From there you can view the rendered HTML, inspect headers, and verify delivery in integration tests.

## What's inside

- SKILL.md - instructions

## Questions

### Is Email Testing with Mailpit and .NET Aspire safe to install?

AIR scanned this exact version of Email Testing with Mailpit and .NET Aspire and flagged nothing. AIR's verdict: safe. The verdict is named by the content that was read, at commit 316756fb309b, so it cannot drift onto a version nobody scanned. The full report is at https://airmarket.ai/security/mailpit-integration.

### How do I install Email Testing with Mailpit and .NET Aspire?

Open https://airmarket.ai/app/mailpit-integration on Air Market and use the install action: Air Market hands Claude a prompt naming this exact skill, and Claude sets it up. Source, pinned to the exact commit this listing describes: https://github.com/Aaronontheweb/dotnet-skills/tree/316756fb309b9ee42d86d5db0d70504d62f3b0c3/skills/aspire-mailpit-integration. Install from that link, not the branch.

## Related on Air Market

- [More Developer Tools listings](/category/devtools)
- [Everything by Aaron Stannard](/@aaronontheweb)

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Canonical URL: <https://airmarket.ai/app/mailpit-integration>