Python program that uses validate_email from PyPI to brute-force search for emails. Will take about three days. See https://www.reddit.com/r/Python/comments/7o0n5u/need_help_with_a_python_program_to_retrieve_my/

dan.py

import time
from validate_email import validate_email
count=0
# Get space to search
s = [str(i).zfill(5) for i in xrange(99999)]
start=time.time()
print "Searching " + str(len(s)) + " combinations..."
with open("matches.txt","w") as cam:
    for i in s:
        # Build the email here, to use for both scanning and display.
        e = "danielstiel" + i + "@gmail.com"
        if validate_email(e,verify=True):
            print "Match: " + e
            count+=1
            cam.write(e+"\r\n")
        else:
            print "Fail: " + e
end=time.time()
print "Found " + str(count) + " matches in " + str(end-start) + " seconds. Wrote matches to matches.txt."