Microsoft Outlook is a web-based suite of webmail, contacts, tasks, and calendaring services.
Send approved lease renewals to their listed signers.
Your renewal agreement reaches the right signers before its deadline, and you get an email showing who was invited and when.
Label renter messages needing a reply and leasing notices by purpose.
Spot emails that need a reply or other attention, while your remaining inbox messages get labels that explain their purpose.