Send Email(with subject,body,attachment) using SSMTP through Terminal in linux?

1.Install ssmtp as

           $ sudo apt-get update && sudo apt-get install ssmtp

2.Configure smtp file by editing the following file as,

$ sudo gedit /etc/ssmtp/ssmtp.conf

Update file with the following:

AuthUser=Sendermail@gmail.com

AuthPass=SenderPasswordforGMAIL

FromLineOverride=YES

mailhub=smtp.gmail.com:587

UseSTARTTLS=YES

Now ssmtp.conf file should look like as the following one,

AuthUser=Sendermail@gmail.com

AuthPass=SenderPasswordforGMAIL

#

# Config file for sSMTP sendmail

#

# The person who gets all mail for userids < 1000

# Make this empty to disable rewriting.

root=postmaster

# The place where the mail goes. The actual machine name is required no

# MX records are consulted. Commonly mailhosts are named mail.domain.com

mailhub=smtp.gmail.com:587

# Where will the mail seem to come from?

#rewriteDomain=

# The full hostname

hostname=tele-desktop118

# Are users allowed to set their own From: address?

# YES - Allow the user to specify their own From: address

# NO - Use the system generated From: address

FromLineOverride=YES

UseSTARTTLS=YES

3.Send a sample mail to test whether ssmtp is configured properly or not?

 Replace recipient email address with the proper email to test ssmtp

$ ssmtp recipient_email@example.com

Now after pressing ENTER key,copy and paste following

To: recipient_email@example.com

From: sender_email@gmail.com

Subject: test email

hello world!

Replace From,To addresses with proper email addresses and Note the blank like after the subject, everything after this line is the body of the email. When you’re finished,

press Ctrl-D. sSMTP may take a few seconds to send the message before closing.

(or) using following simple way as

echo "Testing...1...2...3" | ssmtp receiver@gmail.com

4.To send an attachment using ssmtp we need to install mpack using following command

$  sudo apt-get install mpack

$ mpack -s “Subject_heading”  /path/to/file recipient_email@example.com

To attach body,we need to store text of the body to any variable as

$ echo "This mail is sent with an attachment using ssmtp on 19/03/2018 @ 12.00PM " > BODY

Now we can send subject,body,attachment to the recipient as

$ mpack -s "Subject_heading" -d BODY  /path/to/file recipient_email@example.com