Answered Formit: I receive submissions but clients don't

[[!FormIt?
&hooks=`spam,email,redirect`
&emailTpl=`sentEmailHQ`
&emailFrom=`[email protected]`
&emailFromName=`Domain Name`
&emailSubject=`Message from Contact Us`
&emailTo=`[email protected],[email protected]`
&redirectTo=`26`
]]

<form id="contactFrom" class="cmxform" method="post" action="[[~[[*id]]]]" role="form" onsubmit="myFunction()">

    <div class="messages"></div>

    <div class="controls">

        <div class="row">
            <div class="col-md-4">
                <div class="form-group">
                    <label for="contact_name">First *</label>
                    <input id="contact_name" type="text" name="contact_name" value="[[!+fi.contact_name]]" class="form-control" placeholder="Please enter your first name" required="required" data-error="Firstname is required.">
                    <div class="help-block with-errors"></div>
                </div>
            </div>
            <div class="col-md-4">
                <div class="form-group">
                    <label for="contact_last">Last *</label>
                    <input id="contact_last" type="text" name="contact_last" value="[[!+fi.contact_last]]" class="form-control" placeholder="Please enter your last name" required="required" data-error="Lastname is required.">
                    <div class="help-block with-errors"></div>
                </div>
            </div>
        </div>
        <div class="row">
            <div class="col-md-4">
                <div class="form-group">
                    <label for="contact_email">Email *</label>
                    <input id="contact_email" type="email" name="contact_email" value="[[!+fi.contact_email]]" class="form-control" placeholder="Please enter a valid email address" required="required" data-error="Valid email is required.">
                    <div class="help-block with-errors"></div>
                </div>
            </div>
            <div class="col-md-4">
                <div class="form-group">
                    <label for="contact_phone">Phone</label>
                    <input id="contact_phone_NA_format" type="tel" name="contact_phone_NA_format" value="[[!+fi.contact_phone_NA_format]]" class="form-control" placeholder="Please enter your phone">
                    <div class="help-block with-errors"></div>
                </div>
            </div>
        </div>
        <div class="row">
            <div class="col-md-8">
                <div class="form-group">
                    <label for="contact_message">Message *</label>
                    <textarea id="contact_message" name="contact_message" class="form-control" placeholder="Message for us" rows="4" required="required" data-error="Please,leave us a message.">[[!+fi.contact_message]]</textarea>
                    <div class="help-block with-errors"></div>
                </div>
            </div>
            <div class="col-md-12">
                <input type="submit" class="btn btn-success btn-send submit" value="Submit" name="submit">
            </div>
        </div>
        <div class="row">
            <div class="col-md-12">
                <p class="text-muted"><strong>*</strong> These fields are required.</p>
            </div>
        </div>
    </div>

</form>