Desperate help in sending an email

I have a program that I want to generate an email....someway. I have tried using gmail, but it keeps erroring. does anybody know a way for me to be able to generate an email? Any help would be great...here is my code that i have from the gmail....it didnt work.

Code:

---

        'Sending the email
        Dim mail As New MailMessage()

        'set the addresses
        mail.From = New MailAddress("plagarism.notify.upb@gmail.com")
        mail.To.Add("plagarism.receive.upb@gmail.com")

        'set the content
        mail.Subject = "Plagarism Notification URGENT"
        mail.Body = Body + ControlChars.NewLine + "--------------------------------" + ControlChars.NewLine + OffensesCheck

        'send the message
        Dim smtp As New SmtpClient("smtp.gmail.com", 587)
        smtp.EnableSsl = True
        smtp.DeliveryMethod = SmtpDeliveryMethod.Network
        smtp.Credentials = New NetworkCredential("plagarism.notify.upb@gmail.com", "passwordhere")
        smtp.Send(mail)

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Saying it doesn't work and keep erroring isn't really helpful.

What are the specific error(s) and what line(s) of code cause them?

yea you are right. i apologize, in my frustration i just posted the problem like you are all mind readers and i neglected to post the error and how its being handled. Thank you for reminding me.

here is my error.

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.7.0 Must issue a STARTTLS command first. c26sm5896142waa.50

here is the code again

Code:

---

        'create the mail message
        Dim mail As New MailMessage()

        'set the addresses
        mail.From = New MailAddress("plagarism.notify.upb@gmail.com")
        mail.To.Add("plagarism.receive.upb@gmail.com")

        'set the content
        mail.Subject = "This is an email"
        mail.Body = Body + ControlChars.NewLine + "--------------------------------" + ControlChars.NewLine + OffensesCheck

        'send the message
        Dim smtp As New SmtpClient("SMTP.gmail.com")

        'to authenticate we set the username and password properites on the SmtpClient
        smtp.Credentials = New NetworkCredential("plagarism.notify.upb@gmail.com", "...")
        smtp.Port = 587
        smtp.Send(mail)

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