Retrofit upgrade for any Mail Boss locking mailbox
Skip the keys. Set your own 4-digit code, enter it on the keypad, and turn the knob to unlock. This digital combination lock retrofits any Mail Boss mailbox in minutes. Uses the same patented Mail Boss locking system, engineered for convenience without giving up serious protection.
Fits
4.8
18 ratings
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The new digital combination lock was easy to install and to program. The old thumbwheel lock stopped working and the support person sent me the new digital lock, no problem. Thanks.
A
Anonymous · September 10, 2026
We have two mailboxes, now withe same combination. It is much more convenient than fumbling around for the right key!
We do wish, however, that the beep was loud enough to hear.
G
Glen · September 13, 2026
Looks and functions well.Easy installation. Not sure about the ease of battery replacement or battery life. I think that battery replacement should be described in the manual and it looks as if you have to remove the lock every time you have to replace the battery. Other than that it looks to be a quality upgrade product.