Microsoft reveals new Office 365 Mailbox quota increase

This week the Office 365 Roadmap announced that an increase in Mailbox quota with Exchange Online would be increasing from 50 GB to 100 GB.

The new mailbox quotas will only apply to the Office 365 E3 and E5 plans. All other plans will remain with the 50 GB quota.

Why the need to upgrade?

You might ask why the need to increase mailbox quotas with Exchange Online when only a few individuals need extra space?

Well, a) storage is cheap for Microsoft especially when bought in the quantities that Microsoft purchases to equip hundreds of thousands of Office 365 servers.

And b) it gives them a competitive advantage against Google. Google’s G Suite (which includes Google Drive, Google Photos and Gmail) is limited to only 30 GB. This gives Microsoft a huge upper hand in this market.

Things to consider:

If you’re using the Outlook desktop client, consider how much data you want to cache locally and how well the hard disk on your PC will cope with the size of that cache. PCs equipped with fast SSDs usually perform well up to the 10 GB mark and slow thereafter. PCs with slow-spinning 5,400 rpm hard drives will pause for thought well beforehand.

So if you upgrade your mailbox quota, consider the cost of upgrading your hard disk.

Although having a large mailbox can be an advantage, it also comes with its challenges. While Search is much better today, looking for an item can feel like looking for a needle in a haystack. Sometimes it can be much simpler to the delete the items you know you don’t need.


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When not looking at ways to use technology to create a competitive advantage for his clients and build better businesses, Ben is a husband, busy father of boys, avid gardener, and keen runner and cyclist.

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