For what it's worth

If you buy insurance from Autoaid, you will get an acknowledgment email. If you're lucky, you may get attachments that you can open and read. I was less lucky and needed to ask for the attachments to be resent.

So I checked the email address that the acknowledgment had come from: contactus@autoaidbreakdown.co.uk

That sounded fine, so I replied - only to get a bounceback.

A temporary problem? No - Autoaid told me that "contactus" is the name of a mailbox that deliberatel does not accept incoming emails.

You couldn't make it up.