From OriginsRO wiki
- You can send mail via your Friends List (as long as you have one friend), your Party List (as long as you are in a party), or through the Mailbox.
- Mail will be deleted automatically once your mailbox is full, starting with the oldest messages.
- You can send a maximum of 30 messages at once.
- Any mail you have opened must be taken care of in order to see next one.
- You cannot send mail to characters on the same account.
- Messages which contain foul language cannot be sent.
- Your mail is accessed via a Mailbox NPC in all major towns.
- You cannot send item or zeny.