Send Email in magento

 // Transactional Email Template's ID

            $templateId = 1;

            // Set sender information

            $senderName = Mage::getStoreConfig('trans_email/ident_support/name');          

$senderEmail = Mage::getStoreConfig('trans_email/ident_support/email');

            $sender = array('name' => $senderName,

            'email' => $senderEmail);

            // Set recepient information(Let, $email has recepient information )

            $recepientEmail = $email['emailid'];

            $recepientName = $email['name']." ".$email['surname'];

            // Get Store ID

            $store = Mage::app()->getStore()->getId();

            // Set variables that can be used in email template

            $vars = array('customerName' => $email['name']." ".$email['surname'],

            'customerEmail' => $email['emailid'],'companydetail'=>$email['company_detail']);

            $translate = Mage::getSingleton('core/translate');

            // Send Transactional Email

            Mage::getModel('core/email_template')

            ->sendTransactional($templateId, $sender, $recepientEmail, $recepientName, $vars, $storeId);

            $translate->setTranslateInline(true);

Display sub-categories on category page

First create a new phtml file and save it in your/app/design/frontend/default/yourTheme/template/catalog/category folder.

1-     we have to find the category id for the page we're looking at. (This code will only be called when we're on a category page). We find the id with the following code:

//get the current category

$_cat = new Mage_Catalog_Block_Navigation();

$currentCat = $_cat->getCurrentCategory();

              

2-    This gives us the current category, in the next step we'll use its id to find the sub categories (children) associated with it.

//get the children of the current category

$subCats = Mage::getModel('catalog/category')

              ->load($currentCat->getId())->getChildren();

                              

                              

3-    $subCats now contains a comma separated list of the ids of the sub categories. We need to get rid of the commas:

//get sub category ids

$subCatIds = explode(',',$subCats);

                              

4-    Now the last step is-

<?php if (count($subCatIds) > 1): ?>

 <ul>

  <?php foreach($subCatIds as $subCatId): ?>

   <?php $subCat = Mage::getModel('catalog/category')->load($subCatId); ?>

               <?php if($subCat->getIsActive()): ?>

                <li>

      <?php //display category image

                 if($subCat->getImageUrl()): ?>

                  <img src="<?php echo $subCat->getImageUrl(); ?>" />

                 <?php endif; ?>

                 <a href="<?php echo $subCat->getUrl(); ?>">

                 <?php echo $subCat->getName(); ?>

                 </a>

                </li>

               <?php endif; ?>

   <?php endforeach; ?>

  </ul>

<?php endif; ?>