Ghost/ghost/admin/app/components/modals/newsletters/confirm-newsletter-email.hbs

<div class="modal-content">
    <header class="modal-header" data-test-modal="confirm-newsletter-email">
        <h1>Confirm newsletter email address</h1>
    </header>
    <button type="button" class="close" role="button" title="Close" {{on "click" @close}}>{{svg-jar "close"}}<span class="hidden">Close</span></button>

    <div class="modal-body">
        <p>
            We've sent a confirmation email to <strong>{{@data.newEmail}}</strong>.
            Until the address has been verified newsletters will be sent from the
            {{if @data.currentEmail "previous" "default"}} email address
            ({{full-email-address (or @data.currentEmail "noreply")}}).
        </p>
    </div>

    <div class="modal-footer">
        <button
            type="button"
            class="gh-btn"
            data-test-button="confirm-newsletter-email"
            {{on "click" @close}}
            {{on-key "Enter"}}
        >
            <span>Ok</span>
        </button>
    </div>
</div>