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    <p>Python <code>email</code> library will help.</p> <pre><code>import email, getpass, imaplib, os, re import matplotlib.pyplot as plt </code></pre> <p>This directory is where you will save attachments</p> <pre><code> detach_dir = "F:\OTHERS\CS\PYTHONPROJECTS" </code></pre> <p>Your script then asks user (or yourself) for account features</p> <pre><code>user = raw_input("Enter your GMail username --&gt; ") pwd = getpass.getpass("Enter your password --&gt; ") </code></pre> <p>Connect then to the gmail imap server and login</p> <pre><code>m = imaplib.IMAP4_SSL("imap.gmail.com") m.login(user, pwd) </code></pre> <p>Select one folder, you could use the whole INBOX instead</p> <pre><code>m.select("BUSINESS/PETROLEUM") </code></pre> <p>One should use <code>m.list()</code> to get all the mailboxes. Search for all emails coming from specified sender and select the mail ids:</p> <pre><code>resp, items = m.search(None, '(FROM "EIA_eLists@eia.gov")') items = items[0].split() my_msg = [] # store relevant msgs here in please msg_cnt = 0 break_ = False </code></pre> <p>I want the last emails, so that I am using <code>items[::-1]</code></p> <pre><code>for emailid in items[::-1]: resp, data = m.fetch(emailid, "(RFC822)") if ( break_ ): break for response_part in data: if isinstance(response_part, tuple): msg = email.message_from_string(response_part[1]) varSubject = msg['subject'] varDate = msg['date'] </code></pre> <p>I want only the ones beginning with <code>$</code> </p> <pre><code> if varSubject[0] == '$': r, d = m.fetch(emailid, "(UID BODY[TEXT])") ymd = email.utils.parsedate(varDate)[0:3] my_msg.append([ email.message_from_string(d[0][1]) , ymd ]) msg_cnt += 1 </code></pre> <p>I want only the N=100 last messages</p> <pre><code> if ( msg_cnt == 100 ): break_ = True l = len(my_msg) US, EastCst, NewEng, CenAtl, LwrAtl, Midwst, GulfCst, RkyMt, WCst, CA = [0]*l, [0]*l, [0]*l, [0]*l, [0]*l, [0]*l, [0]*l, [0]*l, [0]*l, [0]*l absc = [k for k in range(len(my_msg))] dates = [str(msg[1][2])+'-'+str(msg[1][3])+'-'+str(msg[1][0]) for msg in my_msg] cnt = -1 for msg in my_msg: data = str(msg[0]).split("\n") cnt+=1 for c in [k.split("\r")[0] for k in data[2:-2]]: </code></pre> <p>Use regular expressions to fetch relevant information</p> <pre><code> m = re.match( r"(.+)(=3D\$)(.+)" , c ) if( m == None ): continue country, na, price = m.groups() if ( country == "US" or country == "USA" ) : US[cnt] = float(price) elif( country == "NewEng" ) : EastCst[cnt] = float(price) elif( country == "EastCst" ) : NewEng[cnt] = float(price) elif( country == "EastCst" ) : CenAtl[cnt] = float(price) elif( country == "EastCst" ) : LwrAtl[cnt] = float(price) elif( country == "EastCst" ) : Midwst[cnt] = float(price) elif( country == "EastCst" ) : GulfCst[cnt] = float(price) elif( country == "EastCst" ) : RkyMt[cnt] = float(price) elif( country == "EastCst" ) : WCst[cnt] = float(price) elif( country == "EastCst" ) : CA[cnt] = float(price) </code></pre> <p>Plot all these curves with US prices</p> <pre><code>plt.plot( absc, US ) plt.plot( absc, EastCst ) plt.plot( absc, NewEng, '#251BE0' ) plt.plot( absc, EastCst, '#1BE0BF' ) plt.plot( absc, CenAtl, '#E0771B' ) plt.plot( absc, LwrAtl, '#CC1BE0' ) plt.plot( absc, Midwst, '#E01B8B' ) plt.plot( absc, GulfCst, '#E01B3F' ) plt.plot( absc, RkyMt ) plt.plot( absc, WCst ) plt.plot( absc, CA ) plt.legend( ('US', 'EastCst', 'NewEng' , 'EastCst', 'CenAtl', 'LwrAtl', 'Midwst', 'GulfCst', 'RkyMt', 'WCst', 'CA') ) plt.title('Diesel price') locs,labels = plt.xticks(absc, dates) plt.show() </code></pre> <p>Some related interesting topics are here</p> <p><a href="https://stackoverflow.com/questions/13210737/get-only-new-emails-imaplib-and-python?lq=1">Get only new emails</a></p> <p><a href="https://stackoverflow.com/questions/2230037/how-to-fetch-an-email-body-using-imaplib-in-python?lq=1">Fetch mail body</a></p> <p><a href="https://stackoverflow.com/questions/5572589/python-forward-imap-email-with-attachments-imaplib-smtplib?lq=1">Forward emails with attachment</a></p> <p><a href="https://stackoverflow.com/questions/14029768/python-imaplib-fetch-body-emails-gmail">Fetch body emails in gmail</a></p> <p>Results are here for three areas only</p> <p><img src="https://i.stack.imgur.com/DkM3T.png" alt="us prices"></p>
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