You can attach the following files types when creating or replying to a ticket:
.jpg
.gif
.jpeg
.png
.pdf
.zip
.png
.vcf
.vcard
.csv
.doc
.docx
.mov
.mp4
.mobileconfig
.log
.txt
.xls
.xlsx
.eml
.rtf
.eml
.bmp
.heif
.hevc
.webp
.apng