Thread Compressor for MS Outlook

In the usual course of communication via e-mail, there’s a conversation chain. Conversations do usually follow a simple principle. User A writes an email to User B. User B receives the email, reads it and replies to User B. The reply includes all of the content that was send to User B plus the reply. User A receives the email and then replies back, again with all the contents included that he initially send to User A, plus the reply of User A plus his own answer. And so forth.. The amount of data in mail keeps on increasing as we just hit either to reply which by default carries the previous mail data.

Thread Compressor (http://threadcompressor.co.uk/) is an add-in to Microsoft Outlook, which removed unnecessary emails from a "thread" - reducing the amount of storage required (maybe keeping your mailbox within its size quota) and reducing the number of emails you need to read.

Once this is installed as an addin, it automatically compresses all the mails by default which the author also warns on his site “Let me say that again: Thread Compressor, as it is configured by default, WILL DELETE DATA FROM YOUR INBOX.”

With TC, you may choose to have it actively delete content. Otherwise, you could have it move "compressed" items to your Deleted Items folder or some other folder you may create (in a PST file, for example). There's also an option on the Advanced tab to have it not remove mail, but just mark it as read. Or to keep various flavours of mail (like high priority ones).

Installation & Instructions to use can be found from the author’s site. Play around, you’ll end up saving a good quantity of mailbox space.