WHEN MAKING OFFERS.....

When making offers, should I call them or just email them? I've listened to Dean when he did the empowering conversation with Joe Jurek, and they mentioned that it may be best to email them in when making an offer to a REO and it seemed they thought the same could be done when making offers to anyone so that you don't have to be worried what they will think or be embarrassed making a low offer.
It seems I should do both, but wanted to get other experienced perspective. I will watch the empowering conversation dvd again with Joe Jurek again, which I've done at least 10 times.
My thought is it's not my job to think for a seller or say no, as we never know what they will take or what they are not telling us. It's only my job to run the numbers and make the offer regardless what I think or feel of the offer. The numbers are the numbers and it's also not my job to say no for the seller.
When I was a loan officer long ago, I had a lead come across my desk that I was sure the client was all set and the area wouldn't appraise so I ripped up the lead and threw it away.
I couldn't sleep all night cuase I didn't run the numbers or do a value check and I basically said no for the client. Anyways I went into work the next morning (Saturday) and dug the pieces out of the trash and taped them together and made a copy.
I called the client, ran the numbers and did value checks with appraisers and did a benficial deal and made $6000 on the front and back and then 2 more deals later. I guess sometimes we have to live our way into better thinking than try to think our way into better living because my best thinking got me where I am and needing and wanting something more.
Anyways, I really wanted tried experience if anyone doesn't mind. Thank you all for the help.
Have my first deal under contract, and yes Michael it's a signed one this time, and now we are marketing it. One step closer.......Louis