Eos meaning emails outlook

A common acronym!

EOS stands for "Exchange Online Sync". It's a feature in Microsoft Outlook that allows you to synchronize your email, calendar, contacts, and tasks between your Outlook client and Microsoft Exchange Online.

In other words, EOS enables you to access and manage your Exchange Online mailbox, calendar, and other data from within Outlook, and vice versa. This ensures that your data is always up-to-date and synchronized across all your devices and platforms.

So, if you're using Outlook with an Exchange Online account, you'll likely see the EOS acronym mentioned in settings or configuration options.