app/mailers/mailer.rb
class Mailer < ActionMailer::Base
default :from => 'purrfectmatch.adopt@gmail.com'
# :reply_to => @user_email
def contact_shelter(shelter_email, content, subject, user_email)
@shelter_email = shelter_email
@content = content
@subject = subject
@user_email = user_email
mail(to: shelter_email,
body: content,
subject: subject,
reply_to: user_email)
end
end