Error message NullReferenceException appears when running mail.sender or mail.from against IBM Notes emails in Studio.
Issue Description: When IBM Notes email body contains HTML code, running any activities that include mail.sender or mail.from, error message NullReferenceException appears. This issue is observed in IBM Notes 9.0.1 + package UiPath.Mail.Activities 1.7.2 + Studio 2019.10.4.
Resolution: Update package UiPath.Mail.Activities to 1.9.3 resolves the issue.