One of your allies can be appointed as a Substitute.
Enter the Diplomatic Corps and choose nickname of a player you want to be your Substitute in the drop-down list in the “Substitute” tab.

Substitute can optionally be given the access to the mail.

Substitute will be able to:

• see all your domains, enter them, see everything the owner can see, except for the mail, if the owner hasn't given the permission,
  
• see all messages that were addressed to the owner, if the latter checked the "Show messages" box when appointing a Substitute,
  
• manage the Market,
  
• distribute resources from the Clan Warehouse and slaves from the Clan Reservation, if the owner is the head of a clan.
  

Substitute's online isn't considered as the owner's online.
Substitute's entrance prevents the riot, but doesn't prevent the account deletion due to a long inactivity of the owner.


Substitute can perform any actions the owner can, except for:

• buildings removal,
• use of the "Capital Transfer" science,
• selection of another Specialisation, if there's one already studied,
• messages deletion,
• control of the tabs in the Diplomatic Corps, including both Clans and Alliances,
• cancellation of any missions, including the Assistance located in the domain of a substituted player,
• initiation of explorers mission,
• Artifacts or Scrolls purchase,
• Hero deletion.

Substitute doesn't have access to the owner's information about Kingdoms. That's why he can't initiate missions.