Answer
Here are the characters you can use for each file name. Additionally, you can use the variables described below.
Characters allowed in "PDF file name" for Secure Download Policy
・Maximum length: 252 characters (including the extension)
・Character types: Single-byte characters, multi-byte characters
・None of the following symbols: #&{}\<>*?$!‘“:@+`|=/
・[ . ] is allowed except at the end of the filename
・No leading or trailing spaces
・Variables (merge tags)
Characters allowed in "ZIP file name" for Encryption Policy
・Maximum length: 150 characters (excluding the extension)
・Character types: Uppercase letters, lowercase letters, numbers
・Symbols: `~!@#$%^&*()_+-={}|[]\:;'<>?,./" are allowed
・Variables (merge tags)
・Default: encrypted_files.zip
Available Variables (Merge Tags)
・((%ORIGINAL-NAME%)) : Inserts the name of the attached file.
If there are multiple attached files, the email source contains multiple headers like "Content-Disposition: attachment; filename=", and the first file name among them will be inserted.
・((%YEAR%)) : Inserts the year the email was sent.
・((%MONTH%)) : Inserts the month the email was sent.
・((%DAY%)) : Inserts the day the email was sent.
・((%HOUR%)) : Inserts the hour the email was sent.
・((%MINUTE%)) : Inserts the minute the email was sent.
・((%SECOND%)) : Inserts the second the email was sent.
・((%TIMEZONE%)) : Inserts the time zone the email was sent in (such as UTC).
※ These items are retrieved from the header information of the sent email.
Microsoft 365's sent email headers contain Greenwich Mean Time, so the value is adjusted by -9:00 from Japan time.
・((%LOCAL-YEAR%)) : Inserts the year the email was sent, adjusted to the time zone set in the general settings of the management screen.
・((%LOCAL-MONTH%)) : Inserts the month the email was sent, adjusted to the time zone set in the general settings of the management screen.
・((%LOCAL-DAY%)) : Inserts the day the email was sent, adjusted to the time zone set in the general settings of the management screen.
・((%LOCAL-HOUR%)) : Inserts the hour the email was sent, adjusted to the time zone set in the general settings of the management screen.
・((%LOCAL-MINUTE%)) : Inserts the minute the email was sent, adjusted to the time zone set in the general settings of the management screen.
・((%LOCAL-SECOND%)) : Inserts the second the email was sent, adjusted to the time zone set in the general settings of the management screen.
・((%LOCAL-TIMEZONE%)) : Inserts the time zone (such as JST) set in the general settings of the management screen.
Example of Using Secure Download Merge Tags
If sending HENNGE New Product Announcement (Winter 2023).doc,
1.
Setting: FileAutoTransfer_((%YEAR%))((%MONTH%))((%DAY%))((%HOUR%))((%MINUTE%)).pdf
Result: FileAutoTransfer_202310011000.pdf
2.
Setting: ((%ORIGINAL-NAME%)).pdf
Result: HENNGE New Product Announcement (Winter 2023).pdf