test email trigger

### Description of defect

#### Target(s) affected by this defect ?

#### Toolchain(s) (name and version) displaying this defect ?

#### What version of Mbed-os are you using (tag or sha) ?

#### What version(s) of tools are you using. List all that apply (E.g. mbed-cli)

#### How is this defect reproduced ?

The issue contains only an unfilled defect template and names no files, tests, or entry points. First obtain a description of the email-trigger defect, affected targets and toolchains, versions, and reproduction steps; completion cannot be defined from the current payload.

Written by the indexing model from the issue text.