Ben Farmer - 2016-04-26 
        try
        {
            MimeMailMessage mail = new MimeMailMessage();
            mail.From = new MimeMailAddress("("brent---@------s.com");
            mail.To.Add(new MimeMailAddress("be----@gmail.com"));
            mail.Subject = "Test";
            mail.Body = "This is a test message"

            MimeMailer mailSender = new MimeMailer(@"------1.prod.phx3.secureserver.net", 465);
            mailSender.Credentials = new System.Net.NetworkCredential("brent-----s@bi----.com", "-----";
            mailSender.AuthenticationMode = AuthenticationType.Base64;
            mailSender.Send(mail);

        }

The above is an example of me trying to send mail with this software. It runs sucessfully in the test but I do not recieve the email at gmail.com (also not in spam folder). A logging feature would be useful.

I tried this with MailBee.Net software and it worked and I recieved the email after a a minute or 2. I produced a log with there code. Maybe you can see something they are doing that is not supported with (AIM).
[13:37:24.26] [INFO] Assembly version: 10.0.45.502.
[13:37:24.26] [INFO] Will send mail message.
[13:37:24.30] [INFO] Will resolve host "--------1.prod.phx3.secureserver.net".
[13:37:24.32] [INFO] Host "--------1.prod.phx3.secureserver.net" resolved to IP address(es) --.--.176.96.
[13:37:24.32] [INFO] Will connect to host "--------1.prod.phx3.secureserver.net" on port 465.
[13:37:24.40] [INFO] Socket connected to IP address --.--.176.96 on port 465.
[13:37:24.40] [INFO] Will start TLS/SSL negotiation sequence.
[13:37:24.58] [INFO] TLS/SSL negotiation completed.
[13:37:29.61] [RECV] 220---------1.prod.phx3.secureserver.net ESMTP Exim 4.85_1 #1 Tue, 26 Apr 2016 10:37:32 -0700 \r\n220-We do not authorize the use of this system to transport unsolicited, \r\n220 and/or bulk e-mail.\r\n
[13:37:29.62] [INFO] Connected to mail service at host "--------1.prod.phx3.secureserver.net" on port 465 and ready.
[13:37:29.62] [INFO] Will send Hello command (HELO or EHLO).
[13:37:29.62] [SEND] EHLO [---.--.32]\r\n
[13:37:29.70] [RECV] 250---------1.prod.phx3.secureserver.net Hello ---122-150-33.lightspeed.tukrga.sbcglobal.net [--122.150.33]\r\n250-SIZE 52428800\r\n250-8BITMIME\r\n250-PIPELINING\r\n250-AUTH PLAIN LOGIN\r\n250 HELP\r\n
[13:37:29.70] [INFO] SMTP Hello completed.
[13:37:29.71] [INFO] Will login as "brent-----@-----experts.com".
[13:37:29.72] [INFO] Will try SASL LOGIN authentication method.
[13:37:29.72] [SEND] AUTH LOGIN\r\n
[13:37:29.79] [RECV] 334 VXNlcm5hbWU6\r\n
[13:37:29.80] [SEND] *------*\r\n
[13:37:29.87] [RECV] 334 UGFzc3dvcmQ6\r\n
[13:37:29.88] [SEND] *-----*\r\n
[13:37:30.01] [RECV] 235 Authentication succeeded\r\n
[13:37:30.01] [INFO] Logged in as "brent-----@-----experts.com".
[13:37:30.01] [INFO] Will send mail message to SMTP server "--------1.prod.phx3.secureserver.net".
[13:37:30.02] [INFO] Will submit sender and recipients.
[13:37:30.02] [SEND] MAIL FROM:"brent-----@-----experts.com"\r\n
[13:37:30.02] [SEND] RCPT TO:ben-----@gmail.com\r\n
[13:37:30.10] [RECV] 250 OK\r\n
[13:37:30.11] [RECV] 250 Accepted\r\n
[13:37:30.12] [INFO] Sender and recipients accepted by SMTP server.
[13:37:30.12] [INFO] Will send message data now.
[13:37:30.13] [SEND] DATA\r\n
[13:37:30.20] [RECV] 354 Enter message, ending with "." on a line by itself\r\n
[13:37:30.23] [SEND] MIME-Version: 1.0\r\nX-Mailer: MailBee.NET 10.0.45.502\r\nFrom: bren ... f-8"\r\nContent-Transfer-Encoding: quoted-printable\r\n\r\nJust a test [Data chunk of 331 bytes sent.]
[13:37:30.24] [SEND] \r\n.\r\n
[13:37:30.42] [RECV] 250 OK id=1av6vV-0006ST-0Y\r\n
[13:37:30.42] [INFO] Message successfully submitted to SMTP server.
[13:37:30.43] [SEND] QUIT\r\n
[13:37:30.50] [RECV] 221 --------1.prod.phx3.secureserver.net closing connection\r\n
[13:37:30.51] [INFO] Will disconnect from host "--------1.prod.phx3.secureserver.net".
[13:37:30.51] [INFO] Disconnected from host "--------1.prod.phx3.secureserver.net".
[13:37:30.51] [INFO] Mail message sent.

So Imaybe the issue is the authentication method? Let me know what ya suspect the differece may be. Thanks