Hello,

i have a little web agency and client send me a lot of email
and i discover helpdesk support.
But my clients not appriciates

I know osticket but i'm testing hesk, both are open source but no one at moment work good pipelines...

I'm resolving...

and you what you use?

Why don't you use WHMCS instead? You should be able to manage all your clients as well as helpdesk using it.

because whmcs is only for hosting and server...my web agency client's dont use it

You can use WHMCS for whatever you want. No need to be only hosting products. We don't use WHMCS, we prefer Blesta, however we have clients from our design company, that don't host with us, and we keep using this ticket system almost in a daily basis for discussing several questions, or open tickets for support not related with hosting :-)

my client problem is go on site and openticket,they prefer send a simple mail

What kind of services does your web agency provide? I;d suggest you to search for a customer relationship management system, based on your activity field and operations.

for quote, some assistance, ask how are...ahaha

A lot of helpdesk systems allow piping. Meaning you set the email (a forwarder) up to pipe to a file or folder.
WHMCS example: /home/path/to/whmcs/crons/pipe.php

i decide to using hesk is free and cron and more light then osticket

If your client prefers email for support, take a look at HelpScout. I've been using them for years for one of my companies that provides support only via email.

They have a widget to add a support form to any website.

Tawk.to is also an option that you can consider. It is free and has option of live chat / ticket system along with email piping. If you need unbranded version (without powered by tawk.to line), it is available at $15/m additional.

There are many helpdesks available. Some of them listed below.

WHMCS
Kayako
Smarter Track

We use ubersmith.com

However, a really good alternative is hostbill.com

Check them out ..

Hostbill and Blesta are the best solution.

these are neither CMS or Helpdesks.

These are billing and client management systems