his.com and hers.com mailboxes on mail.his.com have been increased in size to 5 gigabytes. You can add disk storage if you need it for $1/gb/month.
You can check your storage status by logging on to https://webmail.his.com and hovering your mouse over the bar under your name at the top of the screen.
Tip: if you use the Zimbra web interface at https://webmail.his.com, you can restore any messages that you delete for up to 30 days, even if you’ve emptied the trash. Just right-click on the 
icon. This only works for mail deleted using https://webmail.his.com – if you’re using a regular email client (Thunderbird, Mac Mail, Outlook, etc.), mail that you delete from that program will be gone.