Iphone sends text attachment with photo emails

When a client of mine sends photos via email from his iPhone 6  he receives the email containing the photos in Outlook but each photo is accompanied by a text file named “File attachment without a title xxxxxx.txt”

What is causing the presence of these text files ?

Yann ShukorOwnerAsked:
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Eoin OSullivanConsultantCommented:
Just to clarify .. what mail program on the iPhone is he sending with?  Apple Mail or Outlook?
Is the Outlook that receives the email running on a PC or Mac?
Also what email account is he using .. GMAIL, HOTMAIL, private business domain? If it’s a business email what mail server is he using, Exchange or something else?
Yann ShukorOwnerAuthor Commented:
Thanks for your response
IPhone mail and Infomaniak email account
Outlook 2016 on a WX PC
Eoin OSullivanConsultantCommented:
You didn't make it clear are the sending and receiving emails both on the same domain/server or are the sender email and receiver completely different.

I'm not familiar with infomaniak email servers .. but the parsing errors with attachments is USUALLY the responsibility of the mail servers involved.

I'm guessing that the Mail app on iOS is attaching the images to the outgoing mail as normal HOWEVER the infomaniak email server is receiving the email and parsing the attached images and finding some additional data it assumes is a second attachment.

If you send emails from the Mail app on the iPhone to multiple different email addresses GMAIL, HOTMAIL etc. .. and see if the other email accounts also see the TXT attachments.  If not then you know it’s the inbound mail server on infomaniak which is interpreting the attached photos with extra TXT

To be honest this kind of issue is quite common and is a product of the wide range of standards for emails and attachments.  For example Apple tends to use RTF as a mail encoding format whereas Outlook tends towards HTML and plain text.  Sending emails with different standards between different mail servers often results in errors or issues parsing content/attachments etc.

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