<messaging:emailTemplate subject="{!SUBSTITUTE($Label.AccountEmailSubject,'{0}', relatedTo.Name)}" relatedToType="Account" language="{!relatedTo.Language__c}">

<messaging:htmlEmailBody >
<c:DynamicEmail RelatedToId="{!relatedTo.Id}" TemplateId="{!$Label.AccountEmailId}" HTML="true"/>
</messaging:htmlEmailBody>
<messaging:plainTextEmailBody >
<c:DynamicEmail RelatedToId="{!relatedTo.Id}" TemplateId="{!$Label.AccountEmailId}" HTML="false"/>
</messaging:plainTextEmailBody>
</messaging:emailTemplate>