Dublin-based software company Xtremepush, founded by Longford man and former professional rugby player Tommy Kearns, has announced its partnership with e-commerce giant Shopify. Xtremepush, a marketing software company, provides marketing tools for businesses to engage with and retain their customers. The company has used the past year to grow through partnerships and acquisitions since raising €4.25 million in funding from Beechbrook Capital in September 2020.   The partnership will enable clients of Xtremepush to use tools that will draw customers back onto their websites if they have visited before. This service will be useful for retail businesses, in particular, who want…