Magento 1.8 – How to Send Email to Customer from Shopping Cart

In case you haven't figured this out or for future reference, Magento checks to see if the order email has already been sent or not and if it has, it returns out of the function without any error, thus pretending everything worked out.

Copy: app/code/core/Mage/Sales/Model/Order.php

Into: app/code/local/Mage/Sales/Model/Order.php

on line 1275 (Magento 1.9.0.1), comment out return $this;

if ($this->getEmailSent()) {
    //return $this;
}

This works and is tested on Magento 1.9.0.1, but it should also work for previous versions too.

Step1: Create local.xml at

app/design/frontend/yourpackage/yourTemplate/layout/

add this code at this file:

<?xml version="1.0"?>
<layout version="0.1.0">
    <default>
        <reference name="header">
            <block type="checkout/cart_sidebar" name="cart_sidebar_header" template="checkout/cart/sidebar.phtml" before="-">
                <action method="addItemRender"><type>simple</type><block>checkout/cart_item_renderer</block><template>checkout/cart/sidebar/default.phtml</template></action>
                <action method="addItemRender"><type>grouped</type><block>checkout/cart_item_renderer_grouped</block><template>checkout/cart/sidebar/default.phtml</template></action>
                <action method="addItemRender"><type>configurable</type><block>checkout/cart_item_renderer_configurable</block><template>checkout/cart/sidebar/default.phtml</template></action>
                <block type="core/text_list" name="cart_sidebar.extra_actions" as="extra_actions" translate="label" module="checkout">
                    <label>Shopping Cart Sidebar Extra Actions</label>
                </block>
            </block>
        </reference>
    </default>
</layout>

This code is call cart side bar to header section.

Step2: on header.phtml call this cart sidebar using below code :

<?php echo $this->getChildHtml('cart_sidebar_header');?>

then rest of you need to put your logic

[Update] I have update code for sidebar

<?php 
$count=0;
if (Mage::helper('core')->isModuleOutputEnabled('Mage_Checkout')) {
    $count = $this->helper('checkout/cart')->getSummaryCount();
    if ($count >= 1) { $text = $this->__('Cart (%s)', $count); } 
    elseif ($count > 0) {$text = $this->__('Cart (%s)', $count); }
    else { $text = $this->__('Cart (0)'); }

}?>
<div class="i_cart" onMouseOver="show_sidebar()" onMouseOut="hide_sidebar()">
    <p class="item">MY CART</p>
    <p class="cart_digit">
        <?php echo $count; ?>
    </p>
</div>
<script type="text/javascript">
function show_sidebar()
{
document.getElementById('headsidebar').style.display="block";
}

function hide_sidebar()
{
document.getElementById('headsidebar').style.display="noone";
}
</script>

<?php if ($this->getIsNeedToDisplaySideBar()):?>
<div class="block block-cart" id="headsidebar">
    <?php $_cartQty = $this->getSummaryCount() ?>
    <div class="block-title">
        <strong><span><?php echo $this->__('My Cart') ?></span></strong>
    </div>
    <div class="block-content">
    <?php if ($_cartQty>0): ?>
        <div class="summary">
            <?php if ($_cartQty==1): ?>
                <p class="amount"><?php echo $this->__('There is <a href="%s">1 item</a> in your cart.', $this->getUrl('checkout/cart')) ?></p>
            <?php else: ?>
                <p class="amount"><?php echo $this->__('There are <a href="%s">%s items</a> in your cart.', $this->getUrl('checkout/cart'), $_cartQty) ?></p>
            <?php endif ?>
            <p class="subtotal">
                <?php if ($this->canApplyMsrp()): ?>
                    <span class="map-cart-sidebar-total"><?php echo $this->__('ORDER TOTAL WILL BE DISPLAYED BEFORE YOU SUBMIT THE ORDER'); ?></span>
                <?php else: ?>
                    <span class="label"><?php echo $this->__('Cart Subtotal:') ?></span> <?php echo Mage::helper('checkout')->formatPrice($this->getSubtotal()) ?>
                    <?php if ($_subtotalInclTax = $this->getSubtotalInclTax()): ?>
                        <br />(<?php echo Mage::helper('checkout')->formatPrice($_subtotalInclTax) ?> <?php echo Mage::helper('tax')->getIncExcText(true) ?>)
                    <?php endif; ?>
                <?php endif; ?>
            </p>
        </div>
    <?php endif ?>
    <?php if($_cartQty && $this->isPossibleOnepageCheckout()): ?>
    <div class="actions">
        <?php echo $this->getChildHtml('extra_actions') ?>
        <button type="button" title="<?php echo $this->__('Checkout') ?>" class="button" onclick="setLocation('<?php echo $this->getCheckoutUrl() ?>')"><span><span><?php echo $this->__('Checkout') ?></span></span></button>
    </div>
    <?php endif ?>
    <?php $_items = $this->getRecentItems() ?>
    <?php if(count($_items)): ?>
        <p class="block-subtitle"><?php echo $this->__('Recently added item(s)') ?></p>
        <ol id="cart-sidebar" class="mini-products-list">
        <?php foreach($_items as $_item): ?>
            <?php echo $this->getItemHtml($_item) ?>
        <?php endforeach; ?>
        </ol>
        <script type="text/javascript">decorateList('cart-sidebar', 'none-recursive')</script>
    <?php else: ?>
        <p class="empty"><?php echo $this->__('You have no items in your shopping cart.') ?></p>
    <?php endif ?>
    </div>
</div>
<?php endif;?>