osCommerce transactional email issues and new product additions

I am looking for an osCommerce expert to help me URGENTLY with the following tasks:

Transactional Email Issues:
- Troubleshoot and fix issues with osCommerce transactional emails
- Ensure that emails are being sent and received properly

New Product Additions:
- Add specific products to the osCommerce store
- Work with me to understand the product requirements and specifications
- Upload images, descriptions, and other relevant information for each product
- Ensure that the new products are properly categorised and searchable within the store

Ideal Skills and Experience:
- Strong proficiency in osCommerce and experience with transactional email setup
- Familiarity with HTML and CSS to address any email content or formatting issues
- Attention to detail and ability to accurately input product information
- Ability to work efficiently and meet project deadlines

Please note that there are several hundred products that need to be added, so the ability to handle a large volume of work is important.

It is very important that you read the attached file...