# What is Profile.rb for?

**URL:** https://meta.discourse.org/t/what-is-profile-rb-for/72946
**Category:** Development
**Created:** [27 Ottobre 2017, 7:34pm UTC](https://meta.discourse.org/t/what-is-profile-rb-for/72946 "2017-10-27T19:34:45Z")
**Posts on this page:** 2
**Page:** 1

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### Author: ![drew0101](https://avatars.discourse-cdn.com/v4/letter/d/54ee81/32.png) [@drew0101](https://meta.discourse.org/u/drew0101)
#### Post date: [27 Ottobre 2017, 7:34pm UTC](https://meta.discourse.org/t/what-is-profile-rb-for/72946/1 "2017-10-27T19:34:45Z")

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Hello,

I am working on configuring my development instance to use SMTP instead of mailcatcher. I notice that there are mail settings in `config/environments/profile.rb` but I cant figure out for the life of me what this environment is for. Do I need to change mail settings in `profile.rb` as well?

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### Author: ![riking](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/riking/32/170938_2.png) [@riking](https://meta.discourse.org/u/riking)
#### Post date: [27 Ottobre 2017, 9:02pm UTC](https://meta.discourse.org/t/what-is-profile-rb-for/72946/2 "2017-10-27T21:02:59Z")

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`RAILS_ENVIRONMENT=profile` is for benchmarking.