Python To Send Emails Via Outlook Express

ian at kirbyfooty.com ian at kirbyfooty.com
Fri Dec 24 07:50:54 CET 2004


Hi Lenard,
You just beat me to it.
Suprise, suprise, I discovered the answer myself this time.

I have modified the script to allow the attachment(s) to still be
passed as a string.
Some error checking is also done to verify the attachment file exists.

I have also modified it so it can be used for multiple email addresses.

Here is the updated working script ...
---------------------------------------------------------

import os
from ctypes import *

FLAGS = c_ulong
LHANDLE = c_ulong
LPLHANDLE = POINTER(LHANDLE)


# Return codes
SUCCESS_SUCCESS = 0
# Recipient class
MAPI_ORIG = 0
MAPI_TO = 1


NULL = c_void_p(None)


class MapiRecipDesc(Structure):
_fields_ = [('ulReserved', c_ulong),
('ulRecipClass', c_ulong),
('lpszName', c_char_p),
('lpszAddress', c_char_p),
('ulEIDSize', c_ulong),
('lpEntryID', c_void_p),
]
lpMapiRecipDesc = POINTER(MapiRecipDesc)


class MapiFileDesc(Structure):
_fields_ = [('ulReserved', c_ulong),
('flFlags', c_ulong),
('nPosition', c_ulong),
('lpszPathName', c_char_p),
('lpszFileName', c_char_p),
('lpFileType', c_void_p),
]
lpMapiFileDesc = POINTER(MapiFileDesc)


class MapiMessage(Structure):
_fields_ = [('ulReserved', c_ulong),
('lpszSubject', c_char_p),
('lpszNoteText', c_char_p),
('lpszMessageType', c_char_p),
('lpszDateReceived', c_char_p),
('lpszConversationID', c_char_p),
('flFlags', FLAGS),
('lpOriginator', lpMapiRecipDesc), # ignored?
('nRecipCount', c_ulong),
('lpRecips', lpMapiRecipDesc),
('nFileCount', c_ulong),
('lpFiles', lpMapiFileDesc),
]
lpMapiMessage = POINTER(MapiMessage)


MAPI = windll.mapi32


MAPISendMail=MAPI.MAPISendMail
MAPISendMail.restype = c_ulong          # Error code
MAPISendMail.argtypes = (LHANDLE,       # lhSession
c_ulong,       # ulUIParam
lpMapiMessage, # lpMessage
FLAGS,         # lpFlags
c_ulong,       # ulReserved
)


def SendMail(recipient, subject, body, attachfiles):
"""Post an e-mail message using Simple MAPI


recipient - string: address to send to (multiple address sperated
with a semicolin)
subject - string: subject header
body - string: message text
attach - string: files to attach (multiple attachments sperated
with a semicolin)

Example usage
import simplemapi

simplemapi.SendMail("to1address at server.com;to2address at server.com","My
Subject","My message body","c:\attachment1.txt;c:\attchment2")


"""

# get list of file attachments
attach = []
AttachWork = attachfiles.split(';')

#verify the attachment file exists
for file in AttachWork:
if os.path.exists(file):
attach.append(file)


attach = map( os.path.abspath, attach )
nFileCount = len(attach)

if attach:
MapiFileDesc_A = MapiFileDesc * len(attach)
fda = MapiFileDesc_A()
for fd, fa in zip(fda, attach):
fd.ulReserved = 0
fd.flFlags = 0
fd.nPosition = -1
fd.lpszPathName = fa
fd.lpszFileName = None
fd.lpFileType = None
lpFiles = fda
else:
# No attachments
lpFiles = cast(NULL, lpMapiFileDesc) # Make NULL

# Get the number of recipients
RecipWork = recipient.split(';')
RecipCnt = len(RecipWork)

# Formulate the recipients
MapiRecipDesc_A = MapiRecipDesc * len(RecipWork)
rda = MapiRecipDesc_A()
for rd, ra in zip(rda, RecipWork):
rd.ulReserved = 0
rd.ulRecipClass = MAPI_TO
rd.lpszName = None
rd.lpszAddress = ra
rd.ulEIDSize = 0
rd.lpEntryID = None
recip = rda

# send the message
msg = MapiMessage(0, subject, body, None, None, None, 0,
cast(NULL, lpMapiRecipDesc), RecipCnt, recip,
nFileCount, lpFiles)


rc = MAPISendMail(0, 0, byref(msg), 0, 0)
if rc != SUCCESS_SUCCESS:
raise WindowsError, "MAPI error %i" % rc
-----------------------------------




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