def send_email():
        try:
                # Defining server variable as a gmail
                server = smtplib.SMTP('smtp.gmail.com:587')
                # Sending Extended SMTP (ESMTP) protocol setup to identify itself and initiate the SMTP conversation
                server.ehlo()
                # Server start and login based on credentials stored in config
                server.starttls()
                server.login(config.email_address, config.password)
                # Sets the message template and afterwards sends email
                for patient in database:
                        message = 'Dear {},nnJust a friendly reminder that at {} you have a {} procedure at {}.nnThanksnBest regards,nn{}'.format(i[0],i[1],i[2],config.signature,config.signature)
                        server.sendmail(config.email_address, patient[4], message)
                # After sending email we quit server
                server.quit()
                print("All Emails successfully sent")
        except:
                print("Email failed to send.")