Mailboxes for tenants

[Sam Leon]

would like thoughts on mailboxes.  I have a 4plex where two of the existing wall mount mailboxes need replacing.

I can't find matching ones so I am going to replace all four.

I see some lockable aluminum mailboxes that seems nice but wondering if it's worth the hassle of having to maintain mailbox keys. 

Area is safe never any theft or anything so there isn't a security concern.  Just that it seems the nicer boxes are all lockable.