In the first part of this series, I explained why the Outlook IAF file is sensitive and what actually lives inside it.
Then, I shared the PHP class to handle these files so you can manage them programmatically.

Now, let's answer the practical question that ends up in support tickets immediately: "I have an .iaf file. How do I import it?"

It sounds like a "few clicks" job. Sometimes it is. But sometimes Outlook just ignores the file, and you are left staring at a screen with no account configured.

First: Do not treat it like a harmless attachment

Microsoft Outlook is everywhere. People use it for years, and then one day they need to move: new PC, new mail hosting, or a new mailbox policy. Suddenly, you face the same tedious problem: account configuration.

Why click through 20 dialog boxes and risk making a typo, when the configuration can be a single file?

That file is often an IAF.