Emailing static Excel files is a total nightmare for data integrity and workflow visibility. I dealt with the same thing at a clinic years ago. The issue is that email is a passive system, while procurement requires an active state change. Basically, your boss sees an email as a chore, not a task. Moving to a cloud-based link system is a decent option because it centralizes the source of truth. I would suggest using a tool to share amazon cart or a similar synchronized list. Here is why it works:

• Real-time syncing prevents ordering wrong quantities from old spreadsheet versions.
• Direct links bypass the download and open friction that kills productivity.
• Shared lists often have notification pings that are way harder to ignore than an inbox. It kinda forces the manager to engage with the live data. If they still dont click it, at least you have a digital receipt showing exactly when it was sent.

Like someone mentioned, email is a trap. Over the years, using share a cart has worked best for clinic orders because the boss sees the total cost and just hits buy, ngl.

^ This. Also, I'm very satisfied using share amazon cart for our clinic orders. Just get any cloud suite from Microsoft; the backend data sync and automation logic work well for us.