can't add image to notification email template

I modified build_failed.ftl file:

<#global bodyHtml>
<div>
<div>
Build <b>${project.name?html} :: ${buildType.name?html}</b> <a href='${link.buildResultsLink}'><@common.short_build_info build/></a> failed
${var.buildShortStatusDescription}
</div>
<img src="D:\Utils\TeamCityConfig\config\_notifications\email\mypicture.png"/>
<div><@resp.buildTypeInvestigation buildType false/></div>
<@common.build_agent build/>
<@common.build_comment build/>
<br>
<@common.build_changes var.changesBean/>
<@common.compilation_errors var.compilationBean/>
<@common.test_errors var.failedTestsBean/>
<@common.footerHtml/>
</div>
</#global>

but e-mail doen't contain image, just an empty rectangle. I also tried <img src="mypicture.png"/>, and this still doen't work. Am I missed something?