GDPR Questions about Gmail SMTP

Hi, I’m getting my website ready for GDPR (the new EU privacy law), and your plugin—Gmail SMTP—is one that I use on my website. In order for me to accurately write my privacy policy, would you please answer the following?

1. Does your plugin collect personally identifiable information (that includes IP addresses)?

2. If so, what types of personally identifiable information does your plugin collect?

3. For what purpose(s) does your plugin collect personally identifiable information?

4. Does your plugin have a privacy policy that explains how you use my website visitors’ personally identifiable information?

5. Do your plugin use cookies or collect various types of data-usage information?

Thanks!