日历邀请未正确发送到Microsoft Outlook帐户

问题描述

我正在测试通过电子邮件发送事件邀请的代码，并在代码中向MIMEText对象添加标头时看到意外响应。

我带有标头的代码如下（为简洁起见，省略了一些代码）：

class PersonInfo:
    def __init__(self,name,email):
        self.name = name
        self.email = email

def build_cal_event(evName,evDesc,\
              organizer,attendees,\
              startDate,endDate):

str_list = []
str_list.append('''\...... #NOT SHOWING FUNCTION IMPLEMENTATION FOR CONCISEnesS

if __name__ == "__main__":
    sender = PersonInfo("MYNAME","[e-mail]")
    rec1= PersonInfo("RECNAME","[e-mail]")
    recipients = [rec1]
    subject = "Hi"
    body = "How is everything?"

    dtstart = datetime(2020,9,2,21,30,0)
    dtend = datetime(2020,3,22,0)
  
    ics = build_cal_event("ImpEvent","Greeting",sender,recipients,dtstart,dtend) #Function creates ICS file

    with open("event.ics",'w') as f:
        f.write(ics)

    client = boto3.client('ses',region_name="us-east-1")
    
    msg = MIMEMultipart('alternative')
    
    msg["Subject"] = subject
    msg["From"] = sender.email
    msg["To"] = ','.join(map(lambda x: x.email,recipients))
    msg["Content-class"] = "urn:content-classes:calendarmessage"

    part_cal = MIMEText(ics,'calendar;method=REQUEST')

    part = MIMEText(body)
    msg.attach(part)

    icsName = "{}.ics".format(subject.replace(" ","_").upper())
    part_cal.set_payload(ics)
    encoders.encode_base64(part_cal)
    part_cal.add_header('Content-Type','text/calendar')
    part_cal.add_header('Content-disposition',"attachment; filename={}".format(icsName))

    msg.attach(part_cal)
 
    try:
        result = client.send_raw_email(
            Source=msg['From'],Destinations=[recipient.email for recipient in recipients],RawMessage={'Data': msg.as_string()}
        )
        print(result['MessageId']) 
    except ClientError as e:
        print(e.response['Error']['Message'])

运行上面的代码时，我在Outlook上看到以下响应：

如您所见，我在电子邮件邀请中看不到“接受”，“暂定”和“拒绝”按钮。

我的ICS文件如下：

BEGIN:VCALENDAR
METHOD:REQUEST
PRODID:OrganizationName
VERSION:2.0
BEGIN:VTIMEZONE
TZID:Eastern Standard Time
BEGIN:STANDARD
DTSTART:16010101T020000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=1SU;BYMONTH=11
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:16010101T020000
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
RRULE:FREQ=YEARLY;INTERVAL=1;BYDAY=2SU;BYMONTH=3
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
ORGANIZER;CN=MYNAME:mailto:[e-mail]
ATTENDEE;ROLE=REQ-PARTICIPANT;PARTSTAT=NEEDS-ACTION;RSVP=TRUE;CN=MYNAME:
 mailto:[e-mail]
DESCRIPTION;LANGUAGE=en-US:impevent
UID:7c8feffa-f03d-406b-8195-3587ec426ec6
SUMMARY;LANGUAGE=en-US:ImpEvent
DTSTART;TZID=Eastern Standard Time:20200902T213000
DTEND;TZID=Eastern Standard Time:20200903T223000
CLASS:PUBLIC
PRIORITY:5
DTSTAMP:20200902T025908Z
TRANSP:OPAQUE
STATUS:CONFIRMED
SEQUENCE:0
LOCATION;LANGUAGE=en-US:
X-MICROSOFT-CDO-APPT-SEQUENCE:0
X-MICROSOFT-CDO-OWNERAPPTID:2118692743
X-MICROSOFT-CDO-BUSYSTATUS:TENTATIVE
X-MICROSOFT-CDO-INTENDEDSTATUS:BUSY
X-MICROSOFT-CDO-ALLDAYEVENT:FALSE
X-MICROSOFT-CDO-IMPORTANCE:1
X-MICROSOFT-CDO-INSTTYPE:0
X-MICROSOFT-ONLINEMEETINGEXTERNALLINK:
X-MICROSOFT-ONLINEMEETINGCONFLINK:
X-MICROSOFT-DONOTFORWARDMEETING:FALSE
X-MICROSOFT-disALLOW-COUNTER:FALSE
X-MICROSOFT-LOCATIONS:[]
BEGIN:VALARM
DESCRIPTION:REMINDER
TRIGGER;RELATED=START:-PT15M
ACTION:disPLAY
END:VALARM
END:VEVENT
END:VCALENDAR

但是，当我以这种方式注释掉上面代码中的add_header行时：

if __name__ == "__main__":
    sender = PersonInfo("MYNAME","[e-mail]")
    recipients = [rec1]
    subject = "Hi"
    body = "How is everything?"
    
    dtstart = datetime(2020,region_name="us-east-1")

    msg = MIMEMultipart('alternative')

    msg["Subject"] = subject
    msg["From"] = sender.email
    msg["To"] = ',"_").upper())
    part_cal.set_payload(ics)
    encoders.encode_base64(part_cal)
    #part_cal.add_header('Content-Type','text/calendar')
    #part_cal.add_header('Content-disposition',"attachment; filename={}".format(icsName))

    msg.attach(part_cal)

    try:
        result = client.send_raw_email(
            Source=msg['From'],RawMessage={'Data': msg.as_string()}
        )
        print(result['MessageId']) 
    except ClientError as e:
        print(e.response['Error']['Message'])

我看到了预期的正确答案：

我不明白为什么当我在代码中包含add_header行时收件人为什么看不到活动邀请。可能是由于我的代码中的send_raw_email命令导致了吗？

编辑1：

我注意到第二个片段中没有事件名称和详细信息。可能是什么原因？

编辑2：

在HernánAlarcón的建议之后，我通过以下方式更改了相关代码：

if __name__ == "__main__":
    sender = PersonInfo("MYNAME","_").upper())
    part_cal.set_payload(ics)
    #encoders.encode_base64(part_cal)
    part_cal.add_header('Content-Type',RawMessage={'Data': msg.as_string()}
        )
        print(result['MessageId']) 
    except ClientError as e:
        print(e.response['Error']['Message'])

它产生了以下响应：

即使更改了代码，接收到的电子邮件中也没有“接受”，“暂定”和“拒绝”按钮。

编辑3：

Content-Type: multipart/alternative; boundary="===============3470341632134321988=="
MIME-Version: 1.0
Subject: Hi
From: [e-mail]
To: [e-mail]
Content-class: urn:content-classes:calendarmessage

--===============3470341632134321988==
Content-Type: text/plain; charset="us-ascii"
MIME-Version: 1.0
Content-transfer-encoding: 7bit

How is everything?
--===============3470341632134321988==
MIME-Version: 1.0
Content-Type: text/calendar; method="REQUEST"; charset="us-ascii"
Content-transfer-encoding: 7bit
Content-transfer-encoding: base64

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--===============3470341632134321988==--

解决方法

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