How mail send the email without view page

When you send an email using a mail client or a programming language, you can specify options to prevent the email from being displayed in the recipient's email client before it's sent. Here are a few ways to achieve this:

Using a mail client:

  1. In most email clients, you can check a box or select an option to "Send immediately" or "Send without previewing". This will send the email directly to the recipient's email server without displaying it in the client.
  2. Some email clients, like Microsoft Outlook, have a setting to "Send and receive" emails in the background, which can also prevent the email from being displayed before sending.

Using a programming language:

  1. In languages like Python, you can use libraries like smtplib or yagmail to send emails programmatically. You can specify the MIME-Version header to set the email to be sent in plain text, which will prevent it from being displayed in the recipient's email client.
  2. In languages like Java, you can use libraries like JavaMail to send emails. You can set the Disposition header to inline or attachment to prevent the email from being displayed in the recipient's email client.

Using specific email protocols:

  1. SMTP (Simple Mail Transfer Protocol) is a common protocol used to send emails. When sending an email using SMTP, you can set the Content-Type header to text/plain to prevent the email from being displayed in the recipient's email client.
  2. IMAP (Internet Message Access Protocol) is another protocol used to send and receive emails. When sending an email using IMAP, you can set the Flags header to \\Seen to prevent the email from being displayed in the recipient's email client.

Here's an example of how you might send an email using Python and the smtplib library without displaying it in the recipient's email client:

import smtplib
from email.mime.text import MIMEText

msg = MIMEText('Hello, world!')
msg['Subject'] = 'Test email'
msg['From'] = '[email protected]'
msg['To'] = '[email protected]'
msg['MIME-Version'] = '1.0'
msg['Content-Type'] = 'text/plain'

server = smtplib.SMTP('smtp.example.com')
server.sendmail('[email protected]', '[email protected]', msg.as_string())
server.quit()

In this example, we set the MIME-Version header to 1.0 and the Content-Type header to text/plain to prevent the email from being displayed in the recipient's email client.