https://sendy.co/

• newsletter
• send
• cheap

http://www.magazineduwebdesign.com/conseils/guides/design-newsletter-7-hacks-pour-des-emails-qui-convertissent/

• emails
• marketing
• responsive
• alt
• tricks
• newsletter

http://www.mail-tester.com/

• newsletter
• spam
• test
• mail

http://www.campaignmonitor.com/css/

• email
• css
• support
• newsletter
• reference
• template
• outlook
• gmail

http://www.grafactory.net/sendnews/

• bounce
• mailing
• massmailing
• newsletter
• php

http://www.campaignmonitor.com/blog/archives/2007/04/a_guide_to_css_support_in_emai_2.html

• css
• email
• newsletter