Frequently Asked Questions (About iSixSigma) 4

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This page lists some frequently asked questions about iSixSigma, iSixSigma services and iSixSigma offerings.

If you don’t see a question that matches yours, please contact us via our support system.


Where can I obtain a copy of my Six Sigma certification? is the largest community and publishing company focused on Lean, Six Sigma and OpEx process improvement. is not a clearinghouse of certifications from every company that practices Lean Six Sigma.

In order to obtain a copy of a certification, please contact the company that administered the certification. For example, if you or an employee was certified by GE then you would need to contact GE to obtain a copy of the certification.


What is the iSixSigma satisfaction guarantee for purchases on your store?

We want all of our customers to be delighted with their shopping experience and their purchases from the iSixSigma store.

If you are not satisfied with your purchased product, return it for a full refund within 7 calendar days from date of paid purchase.

Here is the full process for you to follow.

If you have any questions, please contact us via our support system.

Where can I find an invoice for my purchased products?
  1. Sign into your account
  2. View your orders
  3. Under the “Recent Orders” section, press the “View” link associated with the order of interest
    View Store Invoices
  4. Print the page for your records
When will I receive my purchased product(s) from iSixSigma?

Every product sold on the iSixSigma Store is delivered digitally and immediately.

If you do not receive an email from iSixSigma with download instructions, please contact us via our support system.