How to Contact KOI

Help Us Help You.

Our preferred method of communication with our customers is email because it allows us to make the most efficient use of our personnel's time.

Of course, you are welcome to call, write, or fax us. However you choose to contact us, we ask that you be patient. We will get back to you, normally within one business day.

Via Email

Clicking on any of the email addresses below will normally open your default mail program for message composition. If you prefer to use a different method, then copy the link and paste into your preferred application.

For general product and company information:

For technical support, service, and Web site feedback:

Via Telephone

Call 1-508-877-3440. Please note that this is not a 24-hour/7-day hotline. Please leave a message if necessary.

Via Mail, Courier, etc.

Our street address:

KOI, Inc.
10 Mountainview Drive
Framingham, MA 01701

Please do not ship products to us without first contacting us—either via email or telephone—for a return authorization.

Support for KOI Customers in Japan


電話: 045−571ー5701  横浜市 鶴見区 上の宮町 1−12−22

Privacy Policy

The security of your personal information is very important to us. We never sell or rent your personal information to any third party under any circumstances. We value your trust very highly and will work to protect the security and privacy of any personal information you provide to us.


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