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POpython smtplib send mails rapidly / more efficient
 

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  1. POpython smtplib send mails rapidly / more efficient
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    <p>I've created a small python script to forward approximately 11000 mails (as *.eml) to my mail server. The mails are attached with CSV files, containing data from daily energy measurements.</p> <p>So, my approach is working correctly, however it takes nearly 20min or so to send the mails! Any ideas to speed this up?</p> <pre><code>#! /usr/bin/env python import os, sys import email, smtplib storage_folder = "data/export" storage_header = 0 mail_server = 'server-address' mail_username = 'mail-user' mail_password = 'mail-password' mail_to = 'mail-address-to' mail_from = 'mail-sender' def load_local_mails(file_folder): #: scan desired folder for *.eml files email_body = [] for dirname, dirnames, filenames in os.walk(file_folder): for filename in filenames: if filename.endswith('eml'): f = open(os.path.join(dirname, filename)) email_body.append(f.read()) return email_body def send_mail(email_body): #: send mails smtp = smtplib.SMTP(mail_server, 587) smtp.starttls() smtp.login(mail_username, mail_password) for idx, item in enumerate(email_body): m = email.message_from_string(item) m.replace_header("From", mail_from) m.replace_header("To", mail_to) m.replace_header("Subject", m['subject']) smtp.sendmail(mail_from, mail_to, m.as_string()) print "Forwarding mail %d/%d: '%s' from '%s' to %s " % (idx+1, len(email_body), m['subject'], m['date'], mail_to) smtp.quit() def main(): if len(sys.argv) &gt; 1: if sys.argv[1] == '--start': send_mail(load_local_mails(sys.argv[2])) else: exit("Don't know what to do? :(. Goodbye") if __name__ == '__main__': main() </code></pre> <p>Update: I was able to manage a direct (SCP) upload to the specific folder in the qmail environment. I think this is the fastest solution! Anyway, thanks for the suggestions.</p>
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