The first thing you can do to reduce your mailbox size is to archive your Outbox older items.

So, below we have come up with Five Ways to do so. Therefore, minimizing the mailbox size could fix the error. OST Stored? How to Fix Outlook Mailbox Full Error Through Reducing Outlook Mailbox Size?Īs we mentioned before, the main culprit behind encountering Outlook mailbox full error is the Outlook PST file reaching its storage limit. Your system could have blocked some vital components, Outlook's server could be down, or you might not be connected to a stable network. There could be several other logical reasons for causing problems with your Outlook's space allocation. Besides that, running Outlook in an unsupported environment can also trigger these problems. For instance, if Outlook hasn't been updated in a while or you are running a corrupt version of the app, then it can cause this error. The good news is that you can easily fix Outlook mailbox is full and can't send messages error by getting rid of these faulty plugins.Īpart from user-related issues or human errors, the problem can also arrive due to a faulty application.

Just because your account's junk is not there in the main Inbox, it doesn't mean that it isn't exhausting your Outlook space.ĭo you have some third-party add-ons or plugins installed on your Outlook account? Well, this could be another reason for causing some logical issues with your Outlook account. This could happen due to excessive junk or temporary data on your Outlook account. Your Outlook Inbox might be clear, but chances are that you could still be getting the low storage error.

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