How to attach a .docx document to an email so that it appears in the body of the email?

Question

Zend Framework

Gentlemen, did anyone encounter a similar problem?
On the backend (zend framework 2), a letter is generated with an attached file in docx format.
In all mailers, the document is correctly displayed in the body of the letter, marked as an "attachment" (tested in google mail, mail), except for Yandex mail.
In Yandex mail, the document appears only in attachments.
I will be very glad if you help with advice.

Answer 1

The problem is that the mailer simply parses the document and displays a preview (and the dock itself can already be opened in Google docs, for example). If the mailer does not know how, then it will show a banal attachment.