A picture sent via a mail application from iPhone is received as embedded email.

  • 7023847
  • 01-May-2019
  • 01-May-2019

Environment

GroupWise
GroupWise Mobility Service 18

Situation

You use a default mail application on iPhone for sending emails. Any picture you want to send via a mail is displayed at recipient as embedded email.

Resolution

This is a way how default mail application shipped by Apple works. Already when you want to attach a picture from iPhone to email, this is showed as a picture inside email body.
When you analyze later GMS logs what was sent from the iPhone, you will see similar sections in a Mime header of such email:

Sent from my iPhone
--Apple-Mail-210603D0-F106-4C75-8A7A-B4C9D79C63E8
Content-Type: multipart/related;
type="text/html";
boundary=Apple-Mail-EB564985-A17B-485A-8719-E8556624DEFA
Content-Transfer-Encoding: 7bit

--Apple-Mail-EB564985-A17B-485A-8719-E8556624DEFA
Content-Type: image/jpeg;
name=IMG_0025.JPG;
x-apple-part-url=D17F33C6-24F8-42A6-AE14-F84FABE3B032
Content-Disposition: inline;
filename=IMG_0025.JPG
Content-Transfer-Encoding: base64
Content-Id: <D17F33C6-24F8-42A6-AE14-F84FABE3B032>

A formatting tag Content-Disposition already states it is in-lined picture in a message body and not attachment.

You can download some other mail application for iPhone from iTunes, like for example VMWare Boxer, for testing.Sending pictures via Boxer application will show them as separate attachments at recipient site. Already when you compose new email and add attachment, it shows them as attachments and not being placed inside a message body.
Checking GMS logs again, the Mime file shows information similar like in example bellow:

Sent from Workspace ONE Boxer
X-Mailer: VMwareBoxer 5.6.0 (3693)

Content-Type: image/jpeg
Content-Transfer-Encoding: base64
Content-ID: <Boxer_1556702734.944306_asset.JPG>
Content-Disposition: attachment;
filename="=?utf-8?B?Qm94ZXJfMTU1Njcw?=
=?utf-8?B?MjczNC45NDQzMDZf?=
=?utf-8?B?YXNzZXQuSlBH?=";
size=2062100

Here, a formatting tag Content-Disposition clearly states added picture from a iPhone is a regular attachment added to a email and not as a picture added inline within a message body. 
 

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