How to Insert New Line in the Email Using Linux Mail Command

How to insert new line in the email using linux mail command?

Try using echo -e

echo -e "Hello \n World"

You can type man echo from the command line to read more.

How to insert new line in message body of email using Bash?

Tested on MacOS with Bash 3.2

mail -s "$subject" MyTestEmail@gmail.com <<< $(printf "%s\r\n%s\n" "Note that $start and $end use server time"  "the end")

This is a screen shot from gmail of the email received

Screen Shot from Gmail - Email Received

mail bash variable on a new line

It seems that Outlook removed extra line breaks from my message. I was able to use awk to fix the problem.

echo "$d" | awk '{ print $0"   " }' | mail -s "subject" -r "Name<Name@somewhere.com >" first.last@somewhere.com

This reads every single line, and re-prints it with three spaces at the end. Outlook is now happy.
https://blog.dhampir.no/content/outlook-removes-extra-line-breaks-from-plain-text-emails-how-to-stop-it

Sending mail in bash script outputs literal \n instead of a new line

In bash you should use following syntax

message_txt=$'This is just a test.\n Goodbye!'

Single quotes preceded by a $ is a new syntax that allows to insert escape sequences in strings.

Check following documentation about the quotation mechanism of bash for ANSI C-like escape sequences

Send mail with newline and Linux mail command via Pythons subprocess

You need to put the body and subject in quotes. It's easier if you use an f-string

cmd  = f"echo '{body}' | mail -s '{subject}' -r '{fromAddr}' '{toAddr}'"

Note that you need to ensure that there are no quote characters in any of the parameters -- make sure you don't allow single quote in the password.

How to insert a new line in Linux shell script?

The simplest way to insert a new line between echo statements is to insert an echo without arguments, for example:

echo Create the snapshots
echo
echo Snapshot created

That is, echo without any arguments will print a blank line.

Another alternative to use a single echo statement with the -e flag and embedded newline characters \n:

echo -e "Create the snapshots\n\nSnapshot created"

However, this is not portable, as the -e flag doesn't work consistently in all systems. A better way if you really want to do this is using printf:

printf "Create the snapshots\n\nSnapshot created\n"

This works more reliably in many systems, though it's not POSIX compliant. Notice that you must manually add a \n at the end, as printf doesn't append a newline automatically as echo does.

fail to add new line to email body for sendmail -t | Unix |

This approach worked for me

Writing the Body text content within html tags

#Pre-Defined parameters 

EmailSubjectDemo="New Message : `date`"
EmailbodyDemo="<html> <body> Hi Bro How <br> are <br> you </body> </html>"
EmailToDemo="abc@xyz.com,pqr@f.com"
EmailFromDemo="abc@yz.com,pqr@f.com"

#Sending mail 

(
   echo "From : $EmailFromDemo"
   echo "To   : $EmailToDemo"
   echo "MIME-Version: 1.0"
   echo "Subject: $EmailSubjectDemo"
   echo "Content-Type: text\html"
   echo -e "$EmailbodyDemo"

) sendmail -t

How to Insert New Line in the Email Using Linux Mail Command