precondition:
-
Use the
Google Cloud Launcher
to sign up for the SendGrid Email service. Make a note of your SendGrid SMTP
account credentials, which include username, password, and hostname. Your
SMTP username and password are the same as what you used to sign up for the
service. The SendGrid hostname is smtp.sendgrid.net.
- Create an API key:
- Sign in to Sendgrid
and go to Settings > API Keys.
- Create an API key.
- Select the permissions for the key. At a minimum, the key will need
Mail send permissions to send email.
- Click Save to create the key.
- SendGrid generates a new key. This is the only copy
of the key so make sure to copy the key and save it for later.
Please remember your key and save it somewhere safe.
OK. Now we can use sendgrid python library to send email.
Of cause, you can still follow offical help to use sendgrid with other solution.
https://cloud.google.com/compute/docs/tutorials/sending-mail/using-sendgrid
install sendgrid-python
$pip install sendgrid
Sample python codes:
errong_leng@blogvpn:~/algo$ cat sendmail.py
import base64
import getopt
import mimetypes
import os
import sendgrid
import sys
from sendgrid.helpers.mail import *
def useage():
print ("python sendmail.py [-s subject] [-a attachment ] [-c cc-addr] [-b bcc-addr] [-f from-addr] [-t to-addr] to-addr . . .")
sys.exit()
opts, args = getopt.getopt(sys.argv[1:], "ha:b:c:f:s:t:")
attachs = []
cc = []
bc = []
tc = []
from_addr = ''
subject = ''
for op, value in opts:
if op == "-h":
useage()
elif op == "-a":
attachs.append(value)
elif op == "-b":
bc.append(value)
elif op == "-c":
cc.append(value)
elif op == "-s":
subject = value
elif op == "-f":
from_addr = value
elif op == "-t":
tc.append(value)
if (len(args) <= 0):
useage()
sg = sendgrid.SendGridAPIClient(apikey='
REPLACEWITHYOURAPIKEY')
mail = Mail()
mail.from_email = (Email(from_addr))
mail.subject = subject
personalization = Personalization()
personalization.add_to(Email(args[0]))
for tcs in tc:
personalization.add_to(Email(tcs))
for ccs in cc:
personalization.add_cc(Email(ccs))
for bcc in bc:
personalization.add_bcc(Email(bcc))
personalization.subject = subject
mail.add_personalization(personalization)
contents = args[1:]
for ct in contents:
if (len(ct) > 0):
mail.add_content(Content("text/plain", ct))
for af in attachs:
data = ''
with open(af, 'rb') as f:
data = f.read()
f.close()
if (len(data) > 0):
adata = base64.b64encode(data)
attachment = Attachment()
attachment.content = adata
s = os.path.split(af)
attachment.filename = s[len(s)-1]
attachment.type = mimetypes.guess_type(attachment.filename)[0]
attachment.disposition = "attachment"
attachment.content_id = af
mail.add_attachment(attachment)
response = sg.client.mail.send.post(request_body=mail.get())
print(response.status_code)
print(response.body)
print(response.headers)
errong_leng@blogvpn:~/algo$ python sendmail.py -t "errong.leng@abc.com" -s
"Hello" -f "errong.leng@gmail.com" -c "errong.leng@hotmail.com"
-b "errong.leng@samsung.com" -a configs/104.199.178.17/zqzz.p12
-a configs/104.199.178.17/zqzz.mobileconfig
errong.leng@gmail.com "Hello with content and attachment"
202
Server: nginx
Date: Fri, 19 May 2017 04:04:45 GMT
Content-Type: text/plain; charset=utf-8
Content-Length: 0
Connection: close
X-Message-Id: x7xHfWk8SmWlxUe6Ew6tmA
X-Frame-Options: DENY
Access-Control-Allow-Origin: https://sendgrid.api-docs.io
Access-Control-Allow-Methods: POST
Access-Control-Allow-Headers: Authorization, Content-Type, On-behalf-of, x-sg-elas-acl
Access-Control-Max-Age: 600
X-No-CORS-Reason: https://sendgrid.com/docs/Classroom/Basics/API/cors.html
Once you see 202, which means email sending successfully.
