Sending emails based on intervals using Ruby on Rails

Question

I would like to be able to send a string of emails at a determined interval to different recipients.

I assign to each Contact this series of Emails called a Campaign,

Answer 1

I use ar_mailer gem

http://seattlerb.rubyforge.org/ar_mailer/
http://github.com/adzap/ar_mailer
http://blog.segment7.net/articles/2006/08/15/ar_mailer