### Adding Postmark Rails Gem to Gemfile

Source: https://github.com/activecampaign/postmark-rails/blob/main/README.md

This snippet shows how to add the `postmark-rails` gem to your application's Gemfile, which is the first step for installation. After adding, run `bundle install` in your terminal to fetch the gem and its dependencies.

```Ruby
gem 'postmark-rails'
```

--------------------------------

### Releasing Postmark Rails Gem via Rake

Source: https://github.com/activecampaign/postmark-rails/blob/main/RELEASE.md

This command executes the Rake task responsible for releasing a new version of the Postmark Rails gem. It handles pushing the version tag to GitHub and publishing the gem to RubyGems. Users should be aware of a potential issue with Bundler 1.17 where the OTP prompt might be hidden, requiring manual entry.

```Shell
rake release
```

--------------------------------

### Configuring Postmark API Token in Rails 3-5 Secrets

Source: https://github.com/activecampaign/postmark-rails/blob/main/README.md

This YAML snippet illustrates how to store your Postmark Server API Token in `config/secrets.yml` for Rails 3, 4, and 5 applications. This token is crucial for authenticating your application with the Postmark API and should be treated as sensitive information.

```YAML
postmark_api_token: "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
```

--------------------------------

### Configuring Postmark API Token in Rails 6-7 Credentials

Source: https://github.com/activecampaign/postmark-rails/blob/main/README.md

This YAML snippet demonstrates how to securely store your Postmark Server API Token in `config/credentials.yml.enc` for Rails 6 and 7 applications. The token is essential for authenticating with the Postmark API when sending emails and should be kept confidential.

```YAML
postmark_api_token: "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"
```

--------------------------------

### Setting Postmark as ActionMailer Delivery Method in Rails 3-5

Source: https://github.com/activecampaign/postmark-rails/blob/main/README.md

This Ruby configuration snippet configures ActionMailer to use Postmark as its delivery method in Rails 3, 4, and 5 applications. It fetches the Postmark API token from `Rails.application.secrets`, enabling email sending through Postmark.

```Ruby
config.action_mailer.delivery_method = :postmark
config.action_mailer.postmark_settings = { :api_token => Rails.application.secrets.postmark_api_token }
```

--------------------------------

### Setting Postmark as ActionMailer Delivery Method in Rails 6-7

Source: https://github.com/activecampaign/postmark-rails/blob/main/README.md

This Ruby configuration sets Postmark as the default email delivery method for ActionMailer in Rails 6 and 7 applications. It retrieves the Postmark API token from the application's credentials, ensuring secure access to the Postmark service for sending emails.

```Ruby
config.action_mailer.delivery_method = :postmark
config.action_mailer.postmark_settings = { api_token: Rails.application.credentials.postmark_api_token }
```

=== COMPLETE CONTENT === This response contains all available snippets from this library. No additional content exists. Do not make further requests.