rspec users - Dec 2007 - should send_email always succeeds?

I wrote the following in my spec:

     emails = ActionMailer::Base.deliveries
     emails.length.should eql(2)

     response.should send_email {
       with_tag(''tr'', @contact_info[:full_name])
     }

knowing that 1) an email is being sent; and 2) the contact info is in  
a ''p'' tag and only in a ''p'' tag. The length
expectation is met --
there are two emails. The send_email expectation is met, but should  
not be, as the correct tag would be a ''p'' and not a
''tr''.

Any thoughts as to why?

Thx

--s