How do 'InMail Messages' differ from standard messages on LinkedIn?

'InMail Messages' are a premium feature on LinkedIn that allow users to reach out to individuals who are not in their network, thus enabling communication outside of existing connections. This is a significant advantage for professionals looking to network with potential leads, job candidates, or collaborators, as it bypasses the need for mutual connections.

In contrast, standard messages can only be exchanged between connected contacts, which limits outreach and may hinder networking opportunities. The ability to send InMail to anyone on LinkedIn, regardless of connection status, enhances the platform's purpose as a professional networking tool, allowing for broader communication and engagement within the community.

The other options describe characteristics that are not applicable to InMail Messages. For instance, InMail Messages are not restricted to one-time use; users can send multiple InMail Messages depending on their subscription level. Additionally, while there are some formatting limitations, InMail Messages do allow for attachments, unlike the suggestion that they do not.