General Inquiries
Questions regarding HarkleTools, site usage, or partnership inquiries.
Suggest a Tool
Have an idea for an e-commerce calculator or pricing utility you'd love to see?
Report Policy Changes
Did a platform update fees or tax schedules in your country? Let us know so we can update formulas.
Our commitment to users
- •Prompt Response: We typically review and respond to seller questions and rate reports within 24 to 48 business hours.
- •Privacy Respected: We never share your email address, sell contact information, or send unsolicited marketing emails.
- •Community Driven: Many of our finest enhancements—such as country-specific regulatory tax matrixes and target margin solving—were inspired by direct seller suggestions.