I've noticed for a prospect demo that when sending inbound emails, the attachment name is not kept if the attachment contains spaces and/or accented characters.
Steps to reproduce :
- enable the inbound email server
- add the email aliasable aspect on a folder in a site doclib
- configure a mail client to send to it
- send 2 emails to that space with any subject and no text body necessary, but one with an attachment named e.g. Fiche_Pierre_Durand.xls, and another one with an attachment named e.g. Fiche_arrivée_Pierre_Durand.xls.
In the first case, the attachment node name is correct and preserved (Fiche_Pierre_Durand.xls), in the second case it is called "mail subject (part 1)" or "mail subject (part X)" if there are multiple attachments.
Note that the email subject itself can contain spaces and special characters, and that it will always be preserved correctly.