View sent email history and delivery status. Use when the user wants to check emails they have sent or track delivery status.
$npx -y skills add inboxapi/cli --skill check-sentInstalls into the current project.
Run `npx skills use "https://github.com/inboxapi/cli" --skill "inboxapi/cli/check-sent"` and follow the generated skill instructions now. Read its complete output, redirecting it to a temporary file first if necessary. Resolve relative paths from the supporting-files directory it provides.
Use the skills in "https://github.com/inboxapi/cli" that are relevant to the current task. Run `npx skills add "https://github.com/inboxapi/cli"` and select the relevant skills, then follow their instructions.