ZFS Options for large mail spool

I am going to create pool in this manner (15 drive total, +1 SSD for OS):

2x raidz2 vdevs using 7 disks in each, and 1 spare disk (5.0 TB total space)

This pool will be used to manage several mail users (>15000) with pop3/imap/webmail.
I am migration mail spool from a Linux server, where I am using some mount-related options (noatime,nodiratime) on ext4 file system..

Should I use some specific options to enhance performance with ZFS in your opinion?

Thank you
You can turn off atime on ZFS too. That should help the same way as it does on any filesystem.