DO NOT TRY THIS UNLESS YOU HAVE UNLIMITED MESSAGING AS IT USES YOUR TEXT MESSAGING SYSTEM TO EMAIL YOU!
Although it only works for certain Email providers like Google, hotmail, and most all isp providers. I will now stake claim and dated here on how to setup push email for your Samsung Memoir and Behold and actually everyphone lol. This actually should work for all providers however yahoo charges for pop3 and so forth. This is not a hack and like I said has it has limitations however you don't have to worry about stupid logging in and missing important emails. It will go straight to your phone and you will be able to reply via your phone.     

OK, now to the good stuff. This is how this works. Every tmobile customer is provided with an email address: your phone#@tmomail.com. Got it? Your email provider such as google and hotmail provides mail forwarding for free. Yahoo does not. You have to pay for it.

Step #1 Log into your email provider's web login. I will use google for example.
Step #2 Go to the top right corner Navigation area of your web mail and select settings (options for other providers)
Step #3 Select Forwarding and POP/IMAP
Step #4 Under Forwarding select forward a copy of incoming mail and enter into the box your phone#@tmomail.net
Step #5 Scroll down and save changes

Now, when you receive mail it will go straight to your phone and stay in your inbox as well. When you get your mail, the email will display the original sender's email in which you can click and respond VIA your phone.

The only downside is that the response email will display your tmo#@tmomail.net rather than your original email. It is late so I havent had the chance to call tmobile to see if they can display a phantom name. I'm sure they can (you don't want some people to know your phone #.

However despite the minor short fall, I believe this is a short term answer in which we were all seeking. Thanks and I PWND. 

PS You can set up forwarding with all of your email accounts...as many as you want

***EDIT***
You can change your tmomail.net addy by doing the following:
Login into my.t-mobile.com
Scroll to the bottom and find the configure email
A popup will appear and select change my tmomail.net name

BAM!!! I PWN again.

So far it is working out for me. The only thing that I don't like is that you have to directly click on the email address or you have to go into the more option to find the original sender. But it is way more convenient than any other email client we have seen for the memoir/behold. I hope this helps everyone out.

And please do let me know how it works out for you.

An oversight which is really important

DO NOT TRY THIS UNLESS YOU HAVE UNLIMITED MESSAGING AS IT USES YOUR TEXT MESSAGING SYSTEM TO EMAIL YOU!