# MailPitContainerResource Properties

- Package: [CommunityToolkit.Aspire.Hosting.MailPit](/reference/api/csharp/communitytoolkit.aspire.hosting.mailpit.md)
- Type: [MailPitContainerResource](/reference/api/csharp/communitytoolkit.aspire.hosting.mailpit/mailpitcontainerresource.md)
- Kind: `Properties`
- Members: `4`

Resource for the MailPit server.

## ConnectionStringExpression

- Name: `ConnectionStringExpression`
- Modifiers: `get`
- Returns: `ReferenceExpression`
- Source: [GitHub](https://github.com/CommunityToolkit/Aspire/blob/67afcca30f02c18687f9c5219313710af9706630/src/CommunityToolkit.Aspire.Hosting.MailPit/MailPitContainerResource.cs#L31-L32)

ConnectionString for MailPit smtp endpoint in the form of smtp://host:port.

```csharp
public ReferenceExpression ConnectionStringExpression { get; }
```

## Host

- Name: `Host`
- Modifiers: `get`
- Returns: `EndpointReferenceExpression`
- Source: [GitHub](https://github.com/CommunityToolkit/Aspire/blob/67afcca30f02c18687f9c5219313710af9706630/src/CommunityToolkit.Aspire.Hosting.MailPit/MailPitContainerResource.cs#L21)

Gets the host endpoint reference for the SMTP endpoint.

```csharp
public EndpointReferenceExpression Host { get; }
```

## Port

- Name: `Port`
- Modifiers: `get`
- Returns: `EndpointReferenceExpression`
- Source: [GitHub](https://github.com/CommunityToolkit/Aspire/blob/67afcca30f02c18687f9c5219313710af9706630/src/CommunityToolkit.Aspire.Hosting.MailPit/MailPitContainerResource.cs#L26)

Gets the port endpoint reference for the SMTP endpoint.

```csharp
public EndpointReferenceExpression Port { get; }
```

## UriExpression

- Name: `UriExpression`
- Modifiers: `get`
- Returns: `ReferenceExpression`
- Source: [GitHub](https://github.com/CommunityToolkit/Aspire/blob/67afcca30f02c18687f9c5219313710af9706630/src/CommunityToolkit.Aspire.Hosting.MailPit/MailPitContainerResource.cs#L40)

Gets the connection URI expression for the MailPit SMTP endpoint.

```csharp
public ReferenceExpression UriExpression { get; }
```

## Remarks

Format: `smtp://{host}:{port}`.