This, and emails like this, are a total scam.  Beware of emails and callers who do not appear to know anything about your business  (I don't screen print t-shirts.), want to use 'private carriers', and mostly seem concerned with what type of credit cards you accept.  The scam = it WILL be a stolen credit card number.
I am amused by the request for perfection...from a guy who can't spell what he wants on his shirts.  ha ha ha

Hello Owner/General Manager
Greetings how are you doing today? My name is Sam Mathew i'm sending you this email because i will be needing your service i have a seminar coming up in the city here on  the 23rd of may by 3pm ...I hope you do Screen printing on Tshirts and accept all major credit card as method of payment if yes. i have some T-shirt i need you to do Screen printing on all together are 35 dozen of T-shirts white in color and i'll like to put at the front of the T-shitrs (ARISE AND SHINE) you move down lower and put (ISHIA 60:1) i need a perfect job on the T-shirts the total of the T-shirts are 420Pcs.Sizes are M=74Cm 140pcs, XL=78cm 140pcs and XXL=80cm 140pcs.i will have a private carrier have the T-shirts deliver to your shop so you can work on them...so kindly get back to me the request information below..
Full name..
Shop Address..
Cell phone and Business phone number..
Types of credit card you accept..
Total cost of your service..
Thank you in anticipation of your prompt and favorable reply..
Best regard
323) 488-3402 Texts only    
Sam Mathew
(email received from [email protected])