Reader's question: What are ATT attachments in mails in Outlook and Exchange?

ATT00001 featured image

Today a reader (Servus, Peter!) Asked me how it is that his mail program displays attachments like ATT0000x.html, although he only attached a .doc and a .docx file to the original mail on the Mac. Somehow the inserted attachments and a few others with the name ATT0000x.html appear to be displayed in the Windows mail program. The "x" in the file name stands for consecutive numbers starting with 1.

Attachments with the name ATT00001.html are a series of mails in which text and attachments have been incorporated.

Attachments with the name ATT00001.html are a series of mails in which text and attachments have been incorporated.

The reason for the additional ATT file attachments

A short research revealed that the reason for these attachments is that the text part and the attachment part of the mail message were mixed by inserting attachments in the mail body between the texts. In particular, this seems to lead to the aforementioned ATT additional attachments if the sender uses Apple Mail and the recipient uses Microsoft Outlook or Exchange, for example.

However, the solution has not been that easy to find - although it is actually quite simple. In the Apple support forum there is a long thread, in which various solutions with various software such as Attachment Tamer, Mail Attachments Iconizer and the like are presented. Ultimately, you don't need any of this at all, because Apple Mail has everything on board that you need for a solution.

An option is included in Apple Mail that solves the problem with the ATT0000x attachments in Outlook and Exchange.

An option is included in Apple Mail that solves the problem with the ATT0000x attachments in Outlook and Exchange.

The solution

Fortunately, the solution to the matter is quite simple. There is an option in Apple Mail that does all of the work for this.

Go to the "Edit" menu in Apple Mail and then to the "Attachments" submenu. Here you activate the option "Always send attachments Windows-compatible".

Once that's done, Apple Mail will assemble the mails in the future in such a way that they do not lead to these strange attachments for Windows users.

I hope this solution helps you to get the attachments under control when sending the mails. Your Windows colleagues will thank you. : D

Update 18.03.2018/XNUMX/XNUMX: For particularly difficult cases ...

I got in touch again with the reader for whom I originally wrote the instructions. Despite a lot of trying things out, he didn't manage to keep the ATT attachments away and then went to a computer store that also knows about Macs. Although he couldn't do anything with the file attachments, he gave my reader a tip on how to get to the root of the problem and solve it: Use a different e-mail program. Then Peter has on his Mac Thunderbird Mail installed and now the mails arrive without the said ATT attachments. That's how it works, of course. ;-)

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4 comments

  1. xurl says:

    Hallo,

    this option is not available on an iPhone.
    Is there also a solution for this?

    Regards

    • Sir Apfelot says:

      Hello Xurl!
      Unfortunately, I don't see how that could work. But you can try to save the attachments and then call them up with the "Documents" app. Maybe she can do something with it. It opens almost everything. : D LG!

  2. xurl says:

    Hello SirAppleot,

    thanks for the fast respond.

    Unfortunately, that wouldn't read the problem.
    I noticed that the content (the text) of an e-mail is appended as an attachment (.htm), so that there is no longer any "real" text in the e-mail.

    Instead, the original attachment (e.g. a contact) is now accompanied by the email message as an attachment, so that the recipient receives virtually uncommented attachments.
    With the current flow of phishing e-mails, such e-mails are then relatively quickly viewed as phishing and deleted.

    I was hoping you might have an idea / solution. Switching to another mail client is unfortunately not possible or desired. (It's not about my device)

    I haven't found anything on the web so far, but you might still find something.

    • Sir Apfelot says:

      Yes, unfortunately you will probably not find anything because there is no solution. The setting options for Mail on iOS are even more limited than on the Mac. Unfortunately, I don't see any chance of changing it if you don't want to or can't change the mail client either. :(

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