Just send the message via invoke code using SmtpClient. Remember to import System.Net.Mail namespace.
Sample code below:
Dim smtpClient As SmtpClient = New SmtpClient()
Dim mailMessage As MailMessage = New MailMessage()
mailMessage.To.Add(recipient)
mailMessage.From = New MailAddress("emailaddress@yourdomain.xyz", "Name")
mailMessage.Subject = "Subject"
mailMessage.IsBodyHtml = True
mailMessage.Body = yourMailBody
smtpClient.Host = yourSmtpHost
smtpClient.Port = yourSmtpPort
smtpClient.Send(mailMessage)