Outlook - Inbox out of Space
Outlook users are given a limited set of storage space for their mailboxes. This is limited to 50GB per user, although this can be increased only once to 100GB. Once you reach either of those limits, you MUST delete emails from your mailbox, as there is no longer a higher tier you can use.
As your Mailbox grows in size, it will take longer to search through.
By design of the email protocol, the limit per email is 50MB, although most companies limit them to 25MB in size. This may also cause bounces when sent from our email server (where 50MB is allowed) to ones that limit their size.
Most often, storage issues come from attachments to emails, not the emails themselves. You can download these attachments to your PC/OneDrive to keep them and delete the email from your mailbox.
- Open Outlook
- Select the "Filter By Option" and select Size

- The largest emails will be listed on top (Enormous being over 25MB large), you can select as many as you want to delete.

