Using curl to send email

curl --ssl-reqd \  --url 'smtps://smtp.gmail.com:465' \  --user 'username@gmail.com:password' \  --mail-from 'username@gmail.com' \  --mail-rcpt 'john@example.com' \  --upload-file mail.txt

mail.txt file contents:

From: "User Name" <username@gmail.com>To: "John Smith" <john@example.com>Subject: This is a testHi John,I’m sending this mail with curl thru my gmail account.Bye!

Additional info:

1. I’m using curl version 7.21.6 with SSL support.

2. You don't need to use the --insecure switch, which prevents curl from performing SSL connection verification. See this online resource for further details.

3. It’s considered a bad security practice to pass account credentials thrucommand line arguments. Use --netrc-file. See the documentation.

4. You must turn on access for less secure apps or the newer App passwords.

if one wants to send mails as carbon copy or blind carbon copy:

curl --url 'smtps://smtp.gmail.com:465' --ssl-reqd \  --mail-from 'username@gmail.com' --mail-rcpt 'john@example.com' \  --mail-rcpt 'mary@gmail.com' --mail-rcpt 'eli@example.com' \  --upload-file mail.txt --user 'username@gmail.com:password' --insecure

From: "User Name" <username@gmail.com>To: "John Smith" <john@example.com>Cc: "Mary Smith" <mary@example.com>Subject: This is a testa BCC recipient eli is not specified in the data, just in the RCPT list.

Crate a simple email.conf file like so

Username:   hi@example.comPassword:   OKbNGRcjiVPOP/IMAP Server:    mail.example.com

And simply run sendmail.sh, like so after making it executable (sudo chmod +x sendmail.sh)

./sendmail.sh

Code

#!/bin/bashARGS=$(xargs echo  $(perl -anle 's/^[^:]+//g && s/:\s+//g && print' email.conf) < /dev/null)set -- $ARGS "$@";  declare -A email;email['user']=$1email['pass']=$2email['smtp']=$3email['port']='587';email['rcpt']='your-email-address@gmail.com';email_content='From: "The title" <'"${email['user']}"'>To: "Gmail" <'"${email['rcpt']}"'>Subject: from '"${email['user']}"' to GmailDate: '"$(date)"'Hi Gmail,'"${email['user']}"' is sending email to you and it should work.Regards';echo "$email_content" | curl -s \    --url "smtp://${email['smtp']}:${email['port']}" \    --user "${email['user']}:${email['pass']}" \    --mail-from "${email['user']}" \    --mail-rcpt "${email['rcpt']}" \    --upload-file - # email.txtif [[ $? == 0 ]]; then    echo;    echo 'okay';else    echo "curl error code $?";    man curl | grep "^ \+$? \+"fi

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