Peter Westwood

<p>This plugin allows your users to configure a reminder to be sent to them if they haven’t posted in the last n days.</p>
<p>You configure the reminder on your Profile page (or the profile of another user if you have than capability)</p>
<p>It is in the Personal Options section and called Blogminder Threshold</p>


PJW Blogminder

This plugin allows your users to configure a reminder to be sent to them if they haven't posted in the last n days.

hondamarlboro

<p>This plugin enables visitors to remind them old posts on the same day year(s) ago on the widget.</p>
<h3>Arbitrary section</h3>


Remember Old Post Widget

This plugin enables visitors to remind them old posts on the same day year(s) ago on the widget.

PJW Blogminder vs Remember Old Post Widget