This facility is not available for regular Facebook users.
These included limiting the retention period for Marks messages in Messenger.
We did so in full compliance with our legal obligations to preserve messages.
We have discussed this feature several times.
We will now be making a broader delete message feature available.
This may take some time.
And until this feature is ready, we will no longer be deleting any executives messages.
There is no clarity how the unsend feature will work.
When the timer runs out, the message would disappear from both their and the recipients inboxes.
It will work similar to how retractions of Zuckerbergs messages work.
source: www.techworm.net
