truemail-rb/truemail-rack

# PR Details

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## Description

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## Related Issue

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## Motivation and Context

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## How Has This Been Tested

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## Types of changes

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- [ ] Docs change / refactoring / dependency upgrade
- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing functionality to change)

## Checklist

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- [ ] My code follows the code style of this project
- [ ] My change requires a change to the documentation
- [ ] I have updated the documentation accordingly
- [ ] I have read the [**CONTRIBUTING** document](https://github.com/truemail-rb/truemail-rack/blob/master/CONTRIBUTING.md)
- [ ] I have added tests to cover my changes
- [ ] I have run `bundle exec rspec` from the root directory to see all new and existing tests pass
- [ ] I have run `rubocop` and `reek` to ensure the code style is valid