Optimist International is committed to providing professional and prompt service to Optimist Members. If you know which department you would like to contact, please check the e-mail list below. You may also speak to a staff member in that department by calling (314) 371-6000 or (800) 500-8130 and requesting the extension listed next to each department. To speak to someone in the Optimist International Canada office, please call (514) 593-4401 or (800) 363-7151.