Can jenkins send as email , the build trend graphs ?
Email-ext Plugin can send HTML e-mails. As the URL of the graph is known (for example, for the test trend graph the URL is: http://[server]/job/[job-name]/test/trend) it can be embedded into your e-mail with <img> tag like this:
<img src="${PROJECT_URL}test/trend" />
I beleive ,there is no such plugin for Jenkins to send an email with trend graph of build.
For advance mailing or report , you can try plugin Email-ext
来源：https://stackoverflow.com/questions/9595286/jenkins-sending-build-trend-graph-as-email