The Problem:
I’m not even sure why some incoming messages are able to take 
alarms and some aren’t, but I often find that I’m going through my inbox archiving messages and I’ll accidentally mark something as “spam” because the “archive” button has been pushed to the left one by the alarm button. So then the button beneath my mouse is suddenly 
(spam) instead of 
(archive).
No bell: 
The solution:
Solutions might include just the ability to re-order buttons manually, or re-ordering them so that the one that appears and disappears doesn’t change the position of the others.