This is done directly on the MS Exchange server (and Kerio Connect Server also supports something similar), so it is available directly on webmail (also in Kerio).

In addition, MS Outlook integrates with it and also supports it, but it is the server that does the work of storing and, at the request of the client, recovering purged files.

In MS Exchange the standard is to keep purged files for 30 days (configurable by admin)

That makes sense Gabriele, thanks for clarifying this for me. I'd be happy to get a feature request submitted on this for you. 

With our in-house Exchange server, this saved me quite a lot of times, after "accidentals" shift-delete of e-mails.

That makes a lot of sense, I can see that being super useful in a few scenarios. I was able to get this submitted as a feature request referencing this community post so please feel free to add use case and other details here. Thanks!

Icewarp has a nice feature where (when enabled) all emails processed are archived automatically in the users e-mail account, the user can retrieve them as will but can never delete them! Very handy :).

That is very handy, and neat to see the variation in how it was handled in another email server. It would be important to have it be something the administrator can enable/disable due to the size concerns as you'd be doubling your disk space utilization!

Can always turn on message archiving at the system or domain level. Lot of work was done in this area for the upcoming release.   

Hi Tim! I know I can use "storage", but that's for a different purpose...

The "recover deleted messages" option and function in MS Exchange and in Kerio Connect are designed to give the end user (the single user of the single mailbox... You don't need to be an administrator) to have the possibility to recover PERMANENTLY deleted emails (even those deleted from Outlook using the SHIFT+DEL key combination) by mistake within a certain number of days (usually 30, but can be configurable).

After 30 days the emails are no longer recoverable and are also deleted from the server.

Besides that, this feature is directly supported within Outlook, so you don't need to access the server via webmail.

The archive, on the other hand, is a different thing...

That said, mine is just a proposal for a new feature that seems useful to me (having seen and used it for years in other systems), but I'll understand you (albeit with some regret) if the final decision is not to implement it.

Tim, If the proposal of SM it's to be a best replacement of Exchange, RDI it's a very necessary function that SM that must have. ;-)

BUMP