# Problem with ActionMailer - uninitialized constant NotifierH

**URL:** <https://www.ruby-forum.com/t/problem-with-actionmailer-uninitialized-constant-notifierh/89220>\
**Category:** Rails\
**Created:** [March 18, 2007, 8:23pm UTC](https://www.ruby-forum.com/t/problem-with-actionmailer-uninitialized-constant-notifierh/89220 "2007-03-18T20:23:07Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jamie](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/aca169/32.png) [@jamie](https://www.ruby-forum.com/u/jamie)\
**Post date:** [March 18, 2007, 8:23pm UTC](https://www.ruby-forum.com/t/problem-with-actionmailer-uninitialized-constant-notifierh/89220/1 "2007-03-18T20:23:07Z")

</div>

I am stumped…

Followed the instructions on HowToSendEmailsWithActionMailer and I get  
the following exception - uninitialized constant NotifierHelper. Any  
tips?