In my app, I've got products that a user can subscribe to emails
updates...when somebody updates the product's attributes, they get an
email.
My question is how do I deliver that email so that all the user's
email addresses are NOT in the "TO:" line, only the individual's email
address? I'm currently sending my mailer an array of email
addresses. Is that bad form? Should I instead loop over each user
subscribed to email alerts and call my mailer once for each user?
That seems like bad practice...