Small and simple library for retrieving messages from Post Office Protocol version 3 (POP3) servers with full support for .NET 4.8, .NET Standard 2.1 and asynchronous programming model.

How to use

Connect to Pop3 Server:

Pop3Client pop3Client = new Pop3Client( );
pop3Client.Connect( "SERVER", "USERNAME", "PASSWORD", true );

Retrieve message list:

var messages = pop3Client.List( );

Retrieve messages:

foreach ( Pop3Message message in messages )
{ 
	pop3Client.Retrieve( message );
	
	Console.WriteLine( "MessageId: {0}", message.MessageId );
	Console.WriteLine( "Date: {0}", message.Date );
	Console.WriteLine( "From: {0}", message.From );
	Console.WriteLine( "To: {0}", message.To );
	Console.WriteLine( "Subject: {0}", message.Subject );
} 

Disconnect from the server:

pop3Client.Disconnect( );

How to use in asynchronously way

Connect to Pop3 Server:

Pop3Client pop3Client = new Pop3Client( );
await pop3Client.ConnectAsync( "SERVER", "USERNAME", "PASSWORD", true );

Retrieve message list:

var messages = await pop3Client.ListAsync( );

Retrieve messages:

foreach ( Pop3Message message in messages )
{ 
	await pop3Client.RetrieveAsync( message );
	
	Console.WriteLine( "MessageId: {0}", message.MessageId );
	Console.WriteLine( "Date: {0}", message.Date );
	Console.WriteLine( "From: {0}", message.From );
	Console.WriteLine( "To: {0}", message.To );
	Console.WriteLine( "Subject: {0}", message.Subject );
} 

Disconnect from the server:

await pop3Client.DisconnectAsync( );