DECAF

Plugs a mailto link on your dashboard. Enables people to send e-mails based on user roles.
Features:
<ul>
<li>Recipients get selected by user roles (e.g. editors, contributors). Plugin supports custom roles now.</li>
<li>Capabilities: Subscribers can address admins only. Contributors can address editors and admins. Authors can address authors, editors and admins. Editors and admins can address all users.</li>
<li>Filters duplicate e-mail addresses.</li>
<li>BCC mail if recipients contain subscribers (for privacy reasons).</li>
<li>Multi-language.</li>
</ul>

mailto:staff

Plugs a mailto link on your dashboard. Enables people to send e-mails based on user roles.

ThemeHunk

ThemeHunk Customiser plugin will allow you to add features of testimonial, team and service section. Which will be visible on front page of site.

ThemeHunk Customizer

ThemeHunk Customiser plugin will add features of testimonial, team and service.

mailto:staff vs ThemeHunk Customizer