- If you’re using the Webmention plugin, it will happen automatically on publish. (If you’re also using it to receive, then I highly recommend using Semantic Linkbacks as well.)
- For quick “manual” webmentions you can use Aaron Parecki’s Telegraph or Kevin Marks’ Mention Tech. Just input your source URL that has a link to a target URL and the services will send the Webmention on your behalf.
- Some sites that receive them will have boxes you can put your URL response in them and click a send button. (See mine below.)
I also maintain a collection for most of my WordPress IndieWeb-based research, which may answer additional questions or go into more depth. Hopefully the above three can get you started quickly though.