blocks|key|1550407|text|我看到的主要陷阱是您没有处理任何错误：.login()和.sendmail()都有可以抛出的documented+exceptions，而且.connect()似乎必须有某种方法来表明它无法连接-可能是底层套接字代码抛出的异常。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1550408|entityMap|0|LINK|mutability|MUTABLE|url|https://docs.python.org/3/library/smtplib.html#smtplib.SMTPException^0|J|8|S|B|1Y|A|1A|L|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@$9|O|A|P|B|C]|$9|Q|A|R|B|C]|$9|S|A|T|B|C]]|D|@$9|U|A|V|1|W]]|E|$]]|$1|F|3|-4|5|6|7|X|8|@]|D|@]|E|$]]]|G|$H|$5|I|J|K|E|$L|M]]]]

The main gotcha I see is that you're not handling any errors: <code>.login()</code> and <code>.sendmail()</code> both have <a href="https://docs.python.org/3/library/smtplib.html#smtplib.SMTPException" rel="nofollow noreferrer">documented exceptions</a> that they can throw, and it seems like <code>.connect()</code> must have some way to indicate that it was unable to connect - probably an exception thrown by the underlying socket code.

blocks|key|1765468|text|您应该确保以正确的格式格式化日期-+RFC2822。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1765469|entityMap|0|LINK|mutability|MUTABLE|url|http://www.faqs.org/rfcs/rfc2822.html^0|I|7|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

You should make sure you format the date in the correct format - <a href="http://www.faqs.org/rfcs/rfc2822.html" rel="nofollow noreferrer">RFC2822</a>.

blocks|key|1550499|text|确保没有任何防火墙阻止SMTP。当我第一次尝试发送电子邮件时，它被Windows+Firewall和McAfee屏蔽了--我花了很长时间才找到它们。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1550500|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Make sure you don't have any firewalls blocking SMTP. The first time I tried to send an email, it was blocked both by Windows Firewall and McAfee - took forever to find them both.

blocks|key|1550627|text|我使用的脚本非常类似；我将其发布在这里作为如何使用email.*模块生成MIME消息的示例；因此可以很容易地修改此脚本以附加图片等。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1550628|我依靠ISP来添加date+time报头。|1550629|我的ISP要求我使用安全的smtp连接来发送邮件，我依靠smtplib模块(可从http://www1.cs.columbia.edu/~db2501/ssmtplib.py下载)。|offset|length|1550630|与您的脚本一样，用于在SMTP服务器上进行身份验证的用户名和密码(在下面给出了虚拟值)在源文件中是纯文本的。这是一个安全弱点；但最好的替代方案取决于您需要多小心(想要吗？)是为了保护这些。|1550631|=======================================|1550632|#!+/usr/local/bin/python


SMTPserver+=+'smtp.att.yahoo.com'
sender+=+++++'me@my_email_domain.net'
destination+=+['recipient@her_email_domain.com']

USERNAME+=+"USER_NAME_FOR_INTERNET_SERVICE_PROVIDER"
PASSWORD+=+"PASSWORD_INTERNET_SERVICE_PROVIDER"

#+typical+values+for+text_subtype+are+plain,+html,+xml
text_subtype+=+'plain'


content="""\
Test+message
"""

subject="Sent+from+Python"

import+sys
import+os
import+re

from+smtplib+import+SMTP_SSL+as+SMTP+++++++#+this+invokes+the+secure+SMTP+protocol+(port+465,+uses+SSL)
#+from+smtplib+import+SMTP++++++++++++++++++#+use+this+for+standard+SMTP+protocol+++(port+25,+no+encryption)

#+old+version
#+from+email.MIMEText+import+MIMEText
from+email.mime.text+import+MIMEText

try:
++++msg+=+MIMEText(content,+text_subtype)
++++msg['Subject']=+++++++subject
++++msg['From']+++=+sender+#+some+SMTP+servers+will+do+this+automatically,+not+all

++++conn+=+SMTP(SMTPserver)
++++conn.set_debuglevel(False)
++++conn.login(USERNAME,+PASSWORD)
++++try:
++++++++conn.sendmail(sender,+destination,+msg.as_string())
++++finally:
++++++++conn.quit()

except:
++++sys.exit(+"mail+failed;+%25s"+%25+"CUSTOM_ERROR"+)+#+give+an+error+message|code-block|syntax|javascript|1550633|entityMap|0|LINK|mutability|MUTABLE|url|http://www1.cs.columbia.edu/~db2501/ssmtplib.py^0|0|0|14|1B|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|10|8|@]|9|@$F|11|G|12|1|13]]|A|$]]|$1|H|3|I|5|6|7|14|8|@]|9|@]|A|$]]|$1|J|3|K|5|6|7|15|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|16|8|@]|9|@]|A|$O|P]]|$1|Q|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

The script I use is quite similar; I post it here as an example of how to use the email.* modules to generate MIME messages; so this script can be easily modified to attach pictures, etc.

I rely on my ISP to add the date time header.

My ISP requires me to use a secure smtp connection to send mail, I rely on the smtplib module (downloadable at <a href="http://www1.cs.columbia.edu/~db2501/ssmtplib.py" rel="noreferrer">http://www1.cs.columbia.edu/~db2501/ssmtplib.py</a>)

As in your script, the username and password, (given dummy values below), used to authenticate on the SMTP server, are in plain text in the source. This is a security weakness; but the best alternative depends on how careful you need (want?) to be about protecting these.

=======================================

<pre><code>#! /usr/local/bin/python


SMTPserver = 'smtp.att.yahoo.com'
sender = 'me@my_email_domain.net'
destination = ['recipient@her_email_domain.com']

USERNAME = "USER_NAME_FOR_INTERNET_SERVICE_PROVIDER"
PASSWORD = "PASSWORD_INTERNET_SERVICE_PROVIDER"

# typical values for text_subtype are plain, html, xml
text_subtype = 'plain'


content="""\
Test message
"""

subject="Sent from Python"

import sys
import os
import re

from smtplib import SMTP_SSL as SMTP # this invokes the secure SMTP protocol (port 465, uses SSL)
# from smtplib import SMTP # use this for standard SMTP protocol (port 25, no encryption)

# old version
# from email.MIMEText import MIMEText
from email.mime.text import MIMEText

try:
 msg = MIMEText(content, text_subtype)
 msg['Subject']= subject
 msg['From'] = sender # some SMTP servers will do this automatically, not all

 conn = SMTP(SMTPserver)
 conn.set_debuglevel(False)
 conn.login(USERNAME, PASSWORD)
 try:
 conn.sendmail(sender, destination, msg.as_string())
 finally:
 conn.quit()

except:
 sys.exit( "mail failed; %s" % "CUSTOM_ERROR" ) # give an error message
</code></pre>

blocks|key|1765721|text|另外，如果你想使用TLS进行smtp+auth，而不是SSL，那么你只需要改变端口(使用587)并执行smtp.starttls()。这对我很有效：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1765722|...
smtp.connect('YOUR.MAIL.SERVER',+587)
smtp.ehlo()
smtp.starttls()
smtp.ehlo()
smtp.login('USERNAME@DOMAIN',+'PASSWORD')
...|code-block|syntax|javascript|1765723|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Also if you want to do smtp auth with TLS as opposed to SSL then you just have to change the port (use 587) and do smtp.starttls(). This worked for me:

<pre><code>...
smtp.connect('YOUR.MAIL.SERVER', 587)
smtp.ehlo()
smtp.starttls()
smtp.ehlo()
smtp.login('USERNAME@DOMAIN', 'PASSWORD')
...
</code></pre>

blocks|key|1765732|text|那这个呢？|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1765733|import+smtplib

SERVER+=+"localhost"

FROM+=+"sender@example.com"
TO+=+["user@example.com"]+#+must+be+a+list

SUBJECT+=+"Hello!"

TEXT+=+"This+message+was+sent+with+Python's+smtplib."

#+Prepare+actual+message

message+=+"""\
From:+%25s
To:+%25s
Subject:+%25s

%25s
"""+%25+(FROM,+",+".join(TO),+SUBJECT,+TEXT)

#+Send+the+mail

server+=+smtplib.SMTP(SERVER)
server.sendmail(FROM,+TO,+message)
server.quit()|code-block|syntax|javascript|1765734|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

What about this? 

<pre><code>import smtplib

SERVER = "localhost"

FROM = "sender@example.com"
TO = ["user@example.com"] # must be a list

SUBJECT = "Hello!"

TEXT = "This message was sent with Python's smtplib."

# Prepare actual message

message = """\
From: %s
To: %s
Subject: %s

%s
""" % (FROM, ", ".join(TO), SUBJECT, TEXT)

# Send the mail

server = smtplib.SMTP(SERVER)
server.sendmail(FROM, TO, message)
server.quit()
</code></pre>

blocks|key|1765779|text|I通常use...not的方法有很大不同，但有一点不同|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1765780|import+smtplib
from+email.MIMEMultipart+import+MIMEMultipart
from+email.MIMEText+import+MIMEText

msg+=+MIMEMultipart()
msg['From']+=+'me@gmail.com'
msg['To']+=+'you@gmail.com'
msg['Subject']+=+'simple+email+in+python'
message+=+'here+is+the+email'
msg.attach(MIMEText(message))

mailserver+=+smtplib.SMTP('smtp.gmail.com',587)
#+identify+ourselves+to+smtp+gmail+client
mailserver.ehlo()
#+secure+our+email+with+tls+encryption
mailserver.starttls()
#+re-identify+ourselves+as+an+encrypted+connection
mailserver.ehlo()
mailserver.login('me@gmail.com',+'mypassword')

mailserver.sendmail('me@gmail.com','you@gmail.com',msg.as_string())

mailserver.quit()|code-block|syntax|javascript|1765781|就这样|1765782|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

The method I commonly use...not much different but a little bit

<pre><code>import smtplib
from email.MIMEMultipart import MIMEMultipart
from email.MIMEText import MIMEText

msg = MIMEMultipart()
msg['From'] = 'me@gmail.com'
msg['To'] = 'you@gmail.com'
msg['Subject'] = 'simple email in python'
message = 'here is the email'
msg.attach(MIMEText(message))

mailserver = smtplib.SMTP('smtp.gmail.com',587)
# identify ourselves to smtp gmail client
mailserver.ehlo()
# secure our email with tls encryption
mailserver.starttls()
# re-identify ourselves as an encrypted connection
mailserver.ehlo()
mailserver.login('me@gmail.com', 'mypassword')

mailserver.sendmail('me@gmail.com','you@gmail.com',msg.as_string())

mailserver.quit()
</code></pre>

That's it

blocks|key|1550817|text|下面的代码对我来说运行良好：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1550818|import+smtplib

to+=+'mkyong2002@yahoo.com'
gmail_user+=+'mkyong2002@gmail.com'
gmail_pwd+=+'yourpassword'
smtpserver+=+smtplib.SMTP("smtp.gmail.com",587)
smtpserver.ehlo()
smtpserver.starttls()
smtpserver.ehlo()+#+extra+characters+to+permit+edit
smtpserver.login(gmail_user,+gmail_pwd)
header+=+'To:'+%2B+to+%2B+'\n'+%2B+'From:+'+%2B+gmail_user+%2B+'\n'+%2B+'Subject:testing+\n'
print+header
msg+=+header+%2B+'\n+this+is+test+msg+from+mkyong.com+\n\n'
smtpserver.sendmail(gmail_user,+to,+msg)
print+'done!'
smtpserver.quit()|code-block|syntax|javascript|1550819|参考：http://www.mkyong.com/python/how-do-send-email-in-python-via-smtplib/|offset|length|1550820|entityMap|0|LINK|mutability|MUTABLE|url|http://www.mkyong.com/python/how-do-send-email-in-python-via-smtplib/^0|0|0|3|1X|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@$I|V|J|W|1|X]]|A|$]]|$1|K|3|-4|5|6|7|Y|8|@]|9|@]|A|$]]]|L|$M|$5|N|O|P|A|$Q|R]]]]

following code is working fine for me:

<pre><code>import smtplib

to = 'mkyong2002@yahoo.com'
gmail_user = 'mkyong2002@gmail.com'
gmail_pwd = 'yourpassword'
smtpserver = smtplib.SMTP("smtp.gmail.com",587)
smtpserver.ehlo()
smtpserver.starttls()
smtpserver.ehlo() # extra characters to permit edit
smtpserver.login(gmail_user, gmail_pwd)
header = 'To:' + to + '\n' + 'From: ' + gmail_user + '\n' + 'Subject:testing \n'
print header
msg = header + '\n this is test msg from mkyong.com \n\n'
smtpserver.sendmail(gmail_user, to, msg)
print 'done!'
smtpserver.quit()
</code></pre>

Ref: <a href="http://www.mkyong.com/python/how-do-send-email-in-python-via-smtplib/" rel="noreferrer">http://www.mkyong.com/python/how-do-send-email-in-python-via-smtplib/</a>

blocks|key|1550881|text|看到那些冗长的答案了吗？请允许我在几行代码中进行自我推广。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1550882|导入并连接：|1550883|import+yagmail
yag+=+yagmail.SMTP('john@doe.net',+host+=+'YOUR.MAIL.SERVER',+port+=+26)|code-block|syntax|javascript|1550884|那么这只是一行代码：|1550885|yag.send('foo@bar.com',+'hello',+'Hello\nThis+is+a+mail+from+your+server\n\nBye\n')|1550886|当它超出范围时，它实际上会关闭(或者可以手动关闭)。此外，它将允许您在密钥环中注册用户名，这样您就不必在脚本中写出密码(在编写yagmail之前，这真的让我很困扰！)|offset|length|style|CODE|1550887|有关软件包/安装、提示和技巧，请查看git或pip，适用于Python2和Python3。|1550888|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/kootenpv/yagmail|1|https://pypi.python.org/pypi/yagmail/^0|0|0|0|0|0|1R|7|0|I|3|0|M|3|1|0^^$0|@$1|2|3|4|5|6|7|14|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|15|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|16|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|17|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|18|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|19|8|@$O|1A|P|1B|Q|R]]|9|@]|A|$]]|$1|S|3|T|5|6|7|1C|8|@]|9|@$O|1D|P|1E|1|1F]|$O|1G|P|1H|1|1I]]|A|$]]|$1|U|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]]|V|$W|$5|X|Y|Z|A|$10|11]]|12|$5|X|Y|Z|A|$10|13]]]]

See all those lenghty answers? Please allow me to self promote by doing it all in a couple of lines.

Import and Connect:

<pre><code>import yagmail
yag = yagmail.SMTP('john@doe.net', host = 'YOUR.MAIL.SERVER', port = 26)
</code></pre>

Then it is just a one-liner:

<pre><code>yag.send('foo@bar.com', 'hello', 'Hello\nThis is a mail from your server\n\nBye\n')
</code></pre>

It will actually close when it goes out of scope (or can be closed manually). Furthermore, it will allow you to register your username in your keyring such that you do not have to write out your password in your script (it really bothered me prior to writing <code>yagmail</code>!)

For the package/installation, tips and tricks please look at <a href="https://github.com/kootenpv/yagmail" rel="nofollow">git</a> or <a href="https://pypi.python.org/pypi/yagmail/" rel="nofollow">pip</a>, available for both Python 2 and 3.

blocks|key|1765929|text|你可以这样做|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1765930|import+smtplib
from+email.mime.text+import+MIMEText
from+email.header+import+Header


server+=+smtplib.SMTP('mail.servername.com',+25)
server.ehlo()
server.starttls()

server.login('username',+'password')
from+=+'me@servername.com'
to+=+'mygfriend@servername.com'
body+=+'That+A+Message+For+My+Girl+Friend+For+tell+Him+If+We+will+go+to+eat+Something+This+Nigth'
subject+=+'Invite+to+A+Diner'
msg+=+MIMEText(body,'plain','utf-8')
msg['Subject']+=+Header(subject,+'utf-8')
msg['From']+=+Header(from,+'utf-8')
msg['To']+=+Header(to,+'utf-8')
message+=+msg.as_string()
server.sendmail(from,+to,+message)|code-block|syntax|javascript|1765931|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

you can do like that

<pre><code>import smtplib
from email.mime.text import MIMEText
from email.header import Header


server = smtplib.SMTP('mail.servername.com', 25)
server.ehlo()
server.starttls()

server.login('username', 'password')
from = 'me@servername.com'
to = 'mygfriend@servername.com'
body = 'That A Message For My Girl Friend For tell Him If We will go to eat Something This Nigth'
subject = 'Invite to A Diner'
msg = MIMEText(body,'plain','utf-8')
msg['Subject'] = Header(subject, 'utf-8')
msg['From'] = Header(from, 'utf-8')
msg['To'] = Header(to, 'utf-8')
message = msg.as_string()
server.sendmail(from, to, message)
</code></pre>

blocks|key|1550947|text|以下是Python+3.x的工作示例|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1550948|#!/usr/bin/env+python3

from+email.message+import+EmailMessage
from+getpass+import+getpass
from+smtplib+import+SMTP_SSL
from+sys+import+exit

smtp_server+=+'smtp.gmail.com'
username+=+'your_email_address@gmail.com'
password+=+getpass('Enter+Gmail+password:+')

sender+=+'your_email_address@gmail.com'
destination+=+'recipient_email_address@gmail.com'
subject+=+'Sent+from+Python+3.x'
content+=+'Hello!+This+was+sent+to+you+via+Python+3.x!'

#+Create+a+text/plain+message
msg+=+EmailMessage()
msg.set_content(content)

msg['Subject']+=+subject
msg['From']+=+sender
msg['To']+=+destination

try:
++++s+=+SMTP_SSL(smtp_server)
++++s.login(username,+password)
++++try:
++++++++s.send_message(msg)
++++finally:
++++++++s.quit()

except+Exception+as+E:
++++exit('Mail+failed:+{}'.format(str(E)))|code-block|syntax|javascript|1550949|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Here's a working example for Python 3.x

<pre><code>#!/usr/bin/env python3

from email.message import EmailMessage
from getpass import getpass
from smtplib import SMTP_SSL
from sys import exit

smtp_server = 'smtp.gmail.com'
username = 'your_email_address@gmail.com'
password = getpass('Enter Gmail password: ')

sender = 'your_email_address@gmail.com'
destination = 'recipient_email_address@gmail.com'
subject = 'Sent from Python 3.x'
content = 'Hello! This was sent to you via Python 3.x!'

# Create a text/plain message
msg = EmailMessage()
msg.set_content(content)

msg['Subject'] = subject
msg['From'] = sender
msg['To'] = destination

try:
 s = SMTP_SSL(smtp_server)
 s.login(username, password)
 try:
 s.send_message(msg)
 finally:
 s.quit()

except Exception as E:
 exit('Mail failed: {}'.format(str(E)))
</code></pre>

blocks|key|1551007|text|我为使用SMTP发送邮件所做的示例代码。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1551008|import+smtplib,+ssl

smtp_server+=+"smtp.gmail.com"
port+=+587++#+For+starttls
sender_email+=+"sender@email"
receiver_email+=+"receiver@email"
password+=+"<your+password+here>"
message+=+"""+Subject:+Hi+there

This+message+is+sent+from+Python."""


#+Create+a+secure+SSL+context
context+=+ssl.create_default_context()

#+Try+to+log+in+to+server+and+send+email
server+=+smtplib.SMTP(smtp_server,port)

try:
++++server.ehlo()+#+Can+be+omitted
++++server.starttls(context=context)+#+Secure+the+connection
++++server.ehlo()+#+Can+be+omitted
++++server.login(sender_email,+password)
++++server.sendmail(sender_email,+receiver_email,+message)
except+Exception+as+e:
++++#+Print+any+error+messages+to+stdout
++++print(e)
finally:
++++server.quit()|code-block|syntax|javascript|1551009|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

The example code which i did for send mail using SMTP.

<pre><code>import smtplib, ssl

smtp_server = "smtp.gmail.com"
port = 587 # For starttls
sender_email = "sender@email"
receiver_email = "receiver@email"
password = "&lt;your password here&gt;"
message = """ Subject: Hi there

This message is sent from Python."""


# Create a secure SSL context
context = ssl.create_default_context()

# Try to log in to server and send email
server = smtplib.SMTP(smtp_server,port)

try:
 server.ehlo() # Can be omitted
 server.starttls(context=context) # Secure the connection
 server.ehlo() # Can be omitted
 server.login(sender_email, password)
 server.sendmail(sender_email, receiver_email, message)
except Exception as e:
 # Print any error messages to stdout
 print(e)
finally:
 server.quit()
</code></pre>

blocks|key|1766114|text|或|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1766115|import+smtplib
+
from+email.message+import+EmailMessage
from+getpass+import+getpass


password+=+getpass()

message+=+EmailMessage()
message.set_content('Message+content+here')
message['Subject']+=+'Your+subject+here'
message['From']+=+"USERNAME@DOMAIN"
message['To']+=+"you@mail.com"

try:
++++smtp_server+=+None
++++smtp_server+=+smtplib.SMTP("YOUR.MAIL.SERVER",+587)
++++smtp_server.ehlo()
++++smtp_server.starttls()
++++smtp_server.ehlo()
++++smtp_server.login("USERNAME@DOMAIN",+password)
++++smtp_server.send_message(message)
except+Exception+as+e:
++++print("Error:+",+str(e))
finally:
++++if+smtp_server+is+not+None:
++++++++smtp_server.quit()|code-block|syntax|javascript|1766116|如果要使用端口465，则必须创建一个SMTP_SSL对象。|offset|length|style|CODE|1766117|entityMap^0|0|0|I|8|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@$I|R|J|S|K|L]]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

Or
<pre class="lang-py prettyprint-override"><code>import smtplib
 
from email.message import EmailMessage
from getpass import getpass


password = getpass()

message = EmailMessage()
message.set_content('Message content here')
message['Subject'] = 'Your subject here'
message['From'] = &quot;USERNAME@DOMAIN&quot;
message['To'] = &quot;you@mail.com&quot;

try:
 smtp_server = None
 smtp_server = smtplib.SMTP(&quot;YOUR.MAIL.SERVER&quot;, 587)
 smtp_server.ehlo()
 smtp_server.starttls()
 smtp_server.ehlo()
 smtp_server.login(&quot;USERNAME@DOMAIN&quot;, password)
 smtp_server.send_message(message)
except Exception as e:
 print(&quot;Error: &quot;, str(e))
finally:
 if smtp_server is not None:
 smtp_server.quit()
</code></pre>
If you want to use Port 465 you have to create an <code>SMTP_SSL</code> object.

I'm using the following method to send mail from Python using SMTP. Is it the right method to use or are there gotchas I'm missing ?

<pre><code>from smtplib import SMTP
import datetime

debuglevel = 0

smtp = SMTP()
smtp.set_debuglevel(debuglevel)
smtp.connect('YOUR.MAIL.SERVER', 26)
smtp.login('USERNAME@DOMAIN', 'PASSWORD')

from_addr = "John Doe &lt;john@doe.net&gt;"
to_addr = "foo@bar.com"

subj = "hello"
date = datetime.datetime.now().strftime( "%d/%m/%Y %H:%M" )

message_text = "Hello\nThis is a mail from your server\n\nBye\n"

msg = "From: %s\nTo: %s\nSubject: %s\nDate: %s\n\n%s" 
 % ( from_addr, to_addr, subj, date, message_text )

smtp.sendmail(from_addr, to_addr, msg)
smtp.quit()
</code></pre>

Sending mail from Python using SMTP

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我使用以下方法通过SMTP从Python发送邮件。这是正确的方法吗?还是有我遗漏的地方？from smtplib import SMTPimport datetimedebuglevel = 0smtp = SMTP()smtp.set_debuglevel(debuglevel)smtp.connect('YOUR....

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