cant save filenames with unallowed chars

[cos2000]

Hi there,

i want to save attachments from an email. The filename has unalloed chars (in my case is had a / in fillename). When i try to save this attachments i get a PHP error. in the function "save" under src/Attachment.php you use file_put_contents without checking filename for unallowed chars.

Under wimdows a / in filename is also not allowed. When i try to save attachments with a / in filename, then windows repaces it with _

I think its the best way to replace unallowed chars in filenames with _

thank you!

best regards