Email Storage Limits
There are no hard limits on the number of emails you can have within your account. Email works like any other file and takes up space under your account just like other regular files. Each email is of a certain size, depending on the size of the contents and attachments.
Individual mailbox sizes may be set if you would like to limit the space available for an email account. You can set that designation in the Mailbox Quota field when creating the email account.