I've been using Webmention for almost 2 years now, and I am fortunate to use Aaron Gustafson's jekyll-webmention_io plugin for Jekyll, the static site generator I currently use on this site. Aaron's plugin deals with getting the Webmentions from webmention.io, as the name implies, but also with sending mentions to external contents I link to in my own content.
Unfortunately, most other Webmention implementations only deal with receiving, not sending, so Remy Sharp thought it would be a good idea providing such tool: webmention.app
Adding Webmentions to a site seemed straightforward and a well trodden path. Sending outgoing webmentions on the other hand seems to have been generally left to ones own devices.
So I decided to take up the challenge and build a platform agnostic method of sending outgoing webmentions, that anyone can use.
Remy supports several ways to use the tool, even available as a self hosted script.
I will not use it on my current Jekyll powered site, but I will definitely keep it in mind for the probable future migration to Eleventy.
If you want to share an error or suggest an enhancement of this content, please edit the source on Github.