Answer :
That means
"I spoke this message to my secretary or into my computer, and my secretary
or my computer did the writing. I didn't read what they wrote before it got sent
to you. So if you find any mis-spellings, or funny ridiculous words that obviously
don't belong here, it's all their fault, not mine. I was not only too lazy or busy to
make the effort to write to you myself, I was also too lazy or busy or didn't care
enough to check it over before it went out to you."
There's a bit of my own opinion in there, but I'm sure you get the idea.
"I spoke this message to my secretary or into my computer, and my secretary
or my computer did the writing. I didn't read what they wrote before it got sent
to you. So if you find any mis-spellings, or funny ridiculous words that obviously
don't belong here, it's all their fault, not mine. I was not only too lazy or busy to
make the effort to write to you myself, I was also too lazy or busy or didn't care
enough to check it over before it went out to you."
There's a bit of my own opinion in there, but I'm sure you get the idea.