Please can anyone suggest to me what app could help me integrate my magento (emailing list) with salesforce?
If you can't find anything in the magento extensions directory, I suggest that you go to your salesforce to look for the integration there. I remember seeing some kind of integration with magento while exploring the salesforce website.
The team at Cloutex can integrate Salesforce with Magento. We can customize the setup and sync the data both ways. If you requires this please contact us at email@example.com