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Frequently Asked Questions

How to find your folders in OWA/web

Catmail's OWA does not show all folders in the left side navigation pane by default.  If you are unable to find a folder that you know exists, follow these steps:

  1. In the left side navigation pane, click Folders to reveal your Inbox.
  2. Click More.
  3. Look for entries that have a small triangle to their left.  Clicking this triangle will expand the list of items under that entry.

Screen shot: How to find email folders in OWA

Shared resources and departmental mailboxes

Accessing a shared resource on Catmail


Substitute the shared/departmental mailbox address for the "email@ohio.edu" placeholder in the above URL and then use your own OHIO ID and password to log in.

How to import PST/OLM files into Catmail

If you have archived messages stored in PST or OLM files, you can import those into Catmail.

What is "Clutter?"

As of April 2015, Microsoft is rolling out a new email management feature called "Clutter" that is designed to make it easier to find important messages in your inbox.  Clutter uses "machine learning" to move lower priority messages out of your way and into a new Clutter folder.

Microsoft blog: De-clutter your inbox in Office 365

At the moment, this is an opt-in feature; however, Microsoft has told us that they plan to have it turned on by default in the future.  To enable or disable Clutter, log into OWA and find its entry under Mail Options:

Screen shot: Enable or disable Clutter in your OWA options

How often do I need to empty my Junk folder?

Junk folders automatically purge messages older than 30 days.  You can remove these messages sooner if you like, or you can just let Catmail do it for you.

Deleted Items auto purge

On Catmail, Deleted Items older than 30 days are automatically purged.  Purged messages can still be recovered for an additional 30 days.

How to recover a deleted item

Deleted items can be recovered from Catmail's dumpster for an additional 30 days after being purged from your Deleted Items folder.  To recover deleted items:

  1. Log into your account using either OWA or Outlook.
  2. Right click your Deleted Items folder and choose Recover Deleted Items.
  3. Select the item or items you wish to recover.
  4. Click the Recover button.

Can't log in to Catmail from Safari

If you repeatedly get sent back to the login page when using Safari on Mac OS to access https://catmail.ohio.edu, try using a different browser like Chrome or Firefox.

Message/attachment size limit

Maximum message size is 25 MB, including attachments.  If you try to send something larger, the message will be rejected.  If you are sending to someone outside the university, we recommend staying under 15 MB. If you need to send something larger than this, upload the file to Box or Filelocker and send your recipient a link to that file.

Maximum recipients & messages per day

A single message may not have more than 500 recipients in the To, Cc and Bcc fields combined.  If you try to include more than 500 recipients, the message will be rejected.

If you send more than 10,000 messages in any 24 hour period, Microsoft will block your account from sending additional mail for 24 hours.  We do not have any way to override this block. You will need to wait for Microsoft to re-enable your access.  During a send block you still will be able to receive messages.

Mailing lists and distribution groups count as a single recipient as long as you do not click the "+" sign to expand the group into its individual members.  To learn more about mailing lists, visit our Mailman home page.

"Search Folders" feature requires Outlook

If you have any Search Folders configured for your account, you will need to use Outlook to access those folders.  Microsoft does not support Search Folders in OWA.

How to forward a message as an attachment

If the Service Desk or IT security office asks you to forward a message to abuse@ohio.edu, the best way to do so is as an attachment.

How do I check my quota?

To check your Catmail quota:

  1. Log into https://catmail.ohio.edu using a web browser.
  2. Click the gear icon in the upper right and choose Options.
  3. On the left side of Options, click the small triangle next to General to expand that section:
    Screen shot: OWA options with General and My Account highlighted
  4. Choose My Account and scroll down.
  5. Your quota information will be on the lower right:
    Screen shot: Quota status bar in OWA