If you have a non-library SendGrid issue, please contact our [support team](https://support.sendgrid.com). If you can't find a solution below, please open an [issue](https://github.com/sendgrid/smtpapi-ruby/issues). ## Table of Contents * [Viewing the Request Header](#request-header) ## Viewing the Request Header When debugging or testing, it may be useful to examine the raw request header to compare against the [documented format](https://sendgrid.com/docs/API_Reference/api_v3.html). You can do this like so: ```ruby puts header ```