Mailto fuction-File attachment
Currently that isn't possible, but you could suggest it as a future improvement.
A workaround that might be possible is to include a hyperlink to the file in the body of the email. Depending on whether the recipients have access to that drive.
More information on that specific function can be found here:
All the best,
This functionality is not available currently. However I would like to ask you why the need for files to be sent as an attachment. If you want to send any planning report it can be done via Anaplan Excel add in and if it is just output report it can be done via Anaplan Powerpoint add in. Users can directly log in and extract the reports with the help of add ins0