ondrejbartas/send_mail_with_inline_image.rb

## send_mail_with_inline_image.rb
# add to Gemfile
# gem "mail"
#
# or do in terminal
# 'gem install mail'


# send_mail_with_inline_image.rb
require 'mail'

# prepare normal mail with text body
mail = Mail.new do
  from  "email_from@domain.com"
  to    "email_to@domain.com"
  bcc   "email_bcc@domain.com" #optional
  subject "email subject"
  text_part do
    content_type 'text/plain; charset=UTF-8'
    body "Testing mail with inline image :-)"
  end
end

# prepare new alternative body (html + inline images)
part = Mail::Part.new()
# add image to alternative part
part.attachments['image_file.png'] = { :content => File.read('image_file.png'), :content_type => "image/png" }
# change content type to 'inline'
part.attachments['image_file.png'].content_disposition("inline; name=\"image_file.png\"")
# get cid (uniq identificator of image part)
# you can use <img src="cid:#######" /> to show image
cid =  part.attachments['image_file.png'].cid
# build html part
part.html_part do
  content_type 'text/html; charset=UTF-8'
  # change image src to cid
  body "<html><body>Testing mail <img src=\"cid:#{cid}\" /> with inline image :-)</body></html>"
end

# add alternative part to mail
mail.add_part(part)
# set related to alternative part
mail.parts.last.content_type "multipart/related; type=\"text/html\";"
# set multipart/alternative to whole mail
mail.content_type "multipart/alternative; boundary=\"#{mail.boundary}\";charset=UTF-8;"

# using sendmail
mail.delivery_method :sendmail

# using Amazon SES
# you can get credentials:
# http://docs.amazonwebservices.com/ses/latest/DeveloperGuide/SMTP.Credentials.html
#
# mail.delivery_method :smtp, { :address              => "email-smtp.us-east-1.amazonaws.com",
#                               :port                 => 587,
#                               :user_name            => 'USERNAMEfromAMAZONE',
#                               :password             => 'PASSWORDfromAMAZONE',
#                               :authentication       => 'login',
#                               :enable_starttls_auto => true
#                            }

mail.deliver
	# add to Gemfile
	# gem "mail"
	#
	# or do in terminal
	# 'gem install mail'


	# send_mail_with_inline_image.rb
	require 'mail'

	# prepare normal mail with text body
	mail = Mail.new do
	from "email_from@domain.com"
	to "email_to@domain.com"
	bcc "email_bcc@domain.com" #optional
	subject "email subject"
	text_part do
	content_type 'text/plain; charset=UTF-8'
	body "Testing mail with inline image :-)"
	end
	end

	# prepare new alternative body (html + inline images)
	part = Mail::Part.new()
	# add image to alternative part
	part.attachments['image_file.png'] = { :content => File.read('image_file.png'), :content_type => "image/png" }
	# change content type to 'inline'
	part.attachments['image_file.png'].content_disposition("inline; name=\"image_file.png\"")
	# get cid (uniq identificator of image part)
	# you can use <img src="cid:#######" /> to show image
	cid = part.attachments['image_file.png'].cid
	# build html part
	part.html_part do
	content_type 'text/html; charset=UTF-8'
	# change image src to cid
	body "<html><body>Testing mail <img src=\"cid:#{cid}\" /> with inline image :-)</body></html>"
	end

	# add alternative part to mail
	mail.add_part(part)
	# set related to alternative part
	mail.parts.last.content_type "multipart/related; type=\"text/html\";"
	# set multipart/alternative to whole mail
	mail.content_type "multipart/alternative; boundary=\"#{mail.boundary}\";charset=UTF-8;"

	# using sendmail
	mail.delivery_method :sendmail

	# using Amazon SES
	# you can get credentials:
	# http://docs.amazonwebservices.com/ses/latest/DeveloperGuide/SMTP.Credentials.html
	#
	# mail.delivery_method :smtp, { :address => "email-smtp.us-east-1.amazonaws.com",
	# :port => 587,
	# :user_name => 'USERNAMEfromAMAZONE',
	# :password => 'PASSWORDfromAMAZONE',
	# :authentication => 'login',
	# :enable_starttls_auto => true
	# }

	mail.deliver