Email logging does not work on the .NET 6.

[Nikolay-Simonov]

My project settings:

<Project Sdk="Microsoft.NET.Sdk.Web">
    <PropertyGroup>
        <TargetFramework>net6.0</TargetFramework>
        <LangVersion>10</LangVersion>
        <RuntimeIdentifiers>win-x64</RuntimeIdentifiers>
    </PropertyGroup>

    <ItemGroup>
        <PackageReference Include="Serilog.AspNetCore" Version="4.1.0" />
        <PackageReference Include="Serilog.Settings.Configuration" Version="3.3.0" />
        <PackageReference Include="Serilog.Sinks.Console" Version="4.0.1" />
        <PackageReference Include="Serilog.Sinks.Email" Version="2.4.0" />
        <PackageReference Include="Serilog.Sinks.File" Version="5.0.0" />
        <PackageReference Include="Serilog.Sinks.Seq" Version="5.1.1" />
    </ItemGroup>
</Project>

SelfLog.Enable(Console.Error) returns the following message:

2022-01-12T13:41:58.1815631Z Exception while emitting periodic batch from Serilog.Sinks.PeriodicBatching.PeriodicBatchingSink: System.MissingMethodException: Method not found: 'System.Threading.Tasks.Task MailKit.MailTransport.Se
ndAsync(MimeKit.MimeMessage, System.Threading.CancellationToken, MailKit.ITransferProgress)'.
at Serilog.Sinks.Email.EmailSink.EmitBatchAsync(IEnumerable1 events) at System.Runtime.CompilerServices.AsyncMethodBuilderCore.Start[TStateMachine](TStateMachine& stateMachine) at Serilog.Sinks.Email.EmailSink.EmitBatchAsync(IEnumerable1 events)
at Serilog.Sinks.PeriodicBatching.PeriodicBatchingSink.OnTick()

I checked the dll in debug/net6.0 folder.
The folder contains MailKit 3.0.0 built for .NET 5.
This DLL has SendAsync methods.

If you build a project for the .NET 5 platform, email logging works and there are no runtime errors.

[ultravelocity]

Experiencing the same issue here. It seems the method signature in MailKit changed.

[wschroers]

Also experiencing the same issue here, any help would be appreciated.

Update: I downgraded Mailkit to version 2.15 as a temporary solution to get it back working again.

[janssenr]

I installed Serilog.Sinks.Email with NuGet Package Manager from Visual Studio 2022.
And it installed MailKit 2.6.0.
And I experience no problems

[wschroers]

The subject of this tickets is incorrect as it is not a .net 6 issue. The problem is that the Serilog.Sinks.Email packages is not compatible with the latest Mailkit version.

[fakhrulhilal]

I installed Serilog.Sinks.Email with NuGet Package Manager from Visual Studio 2022. And it installed MailKit 2.6.0. And I experience no problems

I have the same version as you, but still having the problem, it doesn't send any email.
Serilog.Sinks.Email 2.4.0
MailKit 2.6.0
.NET6

[janssenr]

My Project settings are:

<TargetFramework>net6.0</TargetFramework>
<PackageReference Include="Serilog.AspNetCore" Version="5.0.0" />
<PackageReference Include="Serilog.Sinks.Email" Version="2.4.0" />

@fakhrulhilal Can you post the project which is not working? Then I will take a look.

[xantari]

Related to #107

[Zero-Xiong]

still got the same issue.

I have installed

<PackageReference Include="Serilog.AspNetCore" Version="7.0.0" />
<PackageReference Include="Serilog.Enrichers.Environment" Version="2.2.0" />
<PackageReference Include="Serilog.Enrichers.Thread" Version="3.1.0" />
<PackageReference Include="Serilog.Sinks.Debug" Version="2.0.0" />
<PackageReference Include="Serilog.Settings.Configuration" Version="7.0.0" />
<PackageReference Include="Serilog.Sinks.Email" Version="2.4.0" />
<PackageReference Include="Serilog.Sinks.File" Version="5.0.0" />
<PackageReference Include="MailKit" Version="4.0.0" />

[bplus0]

December 2023 update. This is still an issue with .net 8 and the latest version of Serilog.Sinks.Email. I had to downgrade my mailkit version, and the reinstal Serilog.Sinks.Email.. and the logs started coming.

I would love to find the proper place to track this as Mailkit is way outta date now.

[nblumhardt]

3.0.0-dev-* updates the project to MailKit 4; now on NuGet but needs some testing and feedback as quite a bit of surgery was done :-) - all help appreciated!