Yes, you can customize the templates in System > Transactional Emails. You can use variables for Store Contact Information and Template Variables to insert them into Template Content. You will also be able to preview email templates before saving them.
The answer is “yes”! There is a special tab called “Google Analytics” in Promotions > Follow Up Email > Rules. There you can insert utm tagging for Campaign Source, Medium and Name (required tags) and for Campaign Term and Content (optional tags):
2) Our extension requires cron to be configured and constantly running in order to send emails. Please make sure Magento cron is configured and working on your store. Here you can learn more of Magento cron and how it should be configured.
3) By default, the extension requires cross-sell products to be set for your products in Magento. If they are missing, emails won't be sent out. In order to overcome it, please open the corresponding follow-up email template (go to System > Transactional Emails) for editing and find the line: handle="amfollowup_email_crosssel". Modify the line the following way: handle="amfollowup_email_quote", just like in the screenshot:
Save the template. Once done, the extension will no longer need cross-sell products to send emails.