Email contact sheet (Linux)

ctbrecmail.sh
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#!/bin/bash

# Uses base64, cat, curl, and mktemp - all standard Linux commands

# path/to/ctbrecmail.sh <site> <model> <date> <full path to image>

# eg.
# ./ctbrecmail.sh ${siteSanitizedName} ${modelSanitizedName} ${localDateTime(yyyyMMdd-HHmmss)} "${absoluteParentPath}/${modelSanitizedName}_${localDateTime(yyyyMMdd-HHmmss)}.jpg"

site=$1                      # site name
model=$2                     # model name
datetime=$3                  # date/time
#image=`base64 "$4"`          # image base64 encoded
filename=`echo "${4##*/}"`   # image name only, no path

tmp_file=$(mktemp --suffix=.txt) # temp file for email contents

# compose email contents
cat >> "$tmp_file" <<EOF
From: "Joe Bloggs" <joe.bloggs@yourmailserver.com>
To: "Johnny" <john.q.public@someotherserver.com>
Subject: $site - $model
MIME-Version: 1.0
Content-Type: multipart/mixed; boundary="MULTIPART-MIXED-BOUNDARY"

--MULTIPART-MIXED-BOUNDARY
Content-Type: multipart/alternative; boundary="MULTIPART-ALTERNATIVE-BOUNDARY"

--MULTIPART-ALTERNATIVE-BOUNDARY
Content-Type: text/plain; charset=utf-8
Content-Disposition: inline

$model: $datetime
--MULTIPART-ALTERNATIVE-BOUNDARY--
--MULTIPART-MIXED-BOUNDARY
Content-Type: image/jpeg
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="$filename"

$(base64 "$4")

--MULTIPART-MIXED-BOUNDARY--
EOF

# send email with curl using auths from ~/.netrc
curl --ssl-reqd \
  --url 'smtps://smtp.yourmailserver.com:465' \
  --netrc \
  --mail-from 'joe.bloggs@yourmailserver.com' \
  --mail-rcpt 'john.q.public@someothermailserver.com' \
  --upload-file "$tmp_file"
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~/.netrc  (example)
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server smtp.yourmailserver.com
user joe.bloggs
password unguessablepassword
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