Bullying...I'll show you what bullying is then DrMike

Late afternoon Wednesday I send a "nice-o-gram" email out thanking people for helping me finish some work by doing their job testing it! Not that it's my place to do so, but it's xmas and I know management won't thank them. Anyway, following a minor faux paus typo meaning I recalled and re-sent the email when I was kindly told just minutes later by Paw, I get two replies:

You had me going there for a moment.
Good work by you and Fluffy to get this through
Boss A
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Mike,
I would suggest double check your emails before sending…..
Flakey

I felt, how can I say, rather vexed by one of them. One demonstrates how to manage people, the other how to bully. Can YOU spot the difference?