Trigger Build in Jenkins By EMAIL

I wrote the following Jenkins plugin about 3 months ago, to do just this:

https://wiki.jenkins-ci.org/display/JENKINS/poll-mailbox-trigger-plugin
https://wiki.jenkins-ci.org/display/JENKINS/Poll+Mailbox+Trigger+Plugin.

Check it out, read the documentation, let me know if this solves your problem.

All documentation is on gitHub now:

https://github.com/jenkinsci/poll-mailbox-trigger-plugin

Use a simple free mail client (say, Mozilla Thunderbird) that would filter trigger e-mails in the appropriate folder. Monitor the file system location of that folder with FSTrigger Plugin.

You do not need to read the e-mails in the folder. What you do is this: for each build create an e-mail folder, create a filter that sorts e-mails by subject (subjects would be something like "Trigger [job-name]" ). And monitor modifications to those folders via the plugin. My Thunderbird folders, for example, are stored locally in C:/Users/[user_name]/AppData/Roaming/Thunderbird/Profiles/9nby4v95.default/Mail/Local Folders/ But you can configure Thunderbird to put them wherever you want.