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Ruturaj Dhaneshwar 1Ruturaj Dhaneshwar 1 

Custom reply link to Case Email

I have one vf page on Customer Portal where I am displaying all the case
emails which Portal Users have access.
There is Reply option next to every mail which allows user to reply tio that mail .
By selecting on it,it opens System's Mail app with From,To,Subject firlds and all threads being attached.
Problem,I having is when Emails list for a case increases i.e. threads increases,it does not opens mail app.

Here is my vf page code:
<apex:repeat value="{!emailList}" var="eml">
                <tr style="background-color:white;">
                    <td style="padding:4px 2px 4px 5px;"><apex:outputLink value="mailto:{!eml.FromAddress}?Subject=RE:%20{!eml.Subject}&cc={!eml.ToAddress}&body=%0D%0D%0D%0D%E2%80%94%E2%80%94Original%20Message%E2%80%94%E2%80%94%0DFrom:%20{!eml.FromName}%0DSent:%20{!eml.MessageDate}%0D%0D{!eml.TextBody}" target="_blank">Reply</apex:outputLink></td>

                    </td>
                </tr>
            </apex:repeat>

What change I should make in below link or anybody having other option to achieve this ,please help