Manners maketh man (or woman)

Supposing you were bereaved in tragic circumstances. Supposing you received condolence cards and letters (as most people do), and one was from a local person you didn't know very well. He might have felt compelled to write because he'd been bereaved himself, and wanted to express his sympathy, as people do.

The letter contained spelling mistakes, it was untidy, it misspelled your surname. Would you post in on the parish noticeboard with the errors marked in red? Would you tell everyone you knew about it, and humiliate its author?

Of course not. Only a bad-mannered, socially inept person would do something like that. No one who knew what you'd done would ever want to write to you again.