How to send email without setup spring.mail.username and spring.mail.password?

Support
,
#1

Current code:

image

package com.company.asss.view.newsitem;

import com.company.asss.entity.NewsItem;
import com.company.asss.view.main.MainView;
import com.vaadin.flow.component.Component;
import com.vaadin.flow.router.Route;
import io.jmix.core.Resources;
import io.jmix.email.EmailAttachment;
import io.jmix.email.EmailInfo;
import io.jmix.email.EmailInfoBuilder;
import io.jmix.email.Emailer;
import io.jmix.flowui.Dialogs;
import io.jmix.flowui.action.DialogAction;
import io.jmix.flowui.model.DataContext;
import io.jmix.flowui.view.*;
import org.apache.commons.io.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;

import java.io.IOException;
import java.io.InputStream;

@Route(value = “newsItems/:id”, layout = MainView.class)
@ViewController(“NewsItem.detail”)
@ViewDescriptor(“news-item-detail-view.xml”)
@EditedEntityContainer(“newsItemDc”)
public class NewsItemDetailView extends StandardDetailView {

private boolean justCreated;

@Subscribe
public void onInitEntity(InitEntityEvent<NewsItem> event) {
    justCreated = true;
}

private static final Logger log = LoggerFactory.getLogger(NewsItemDetailView.class);

@Autowired
protected Dialogs dialogs;

@Subscribe(target = Target.DATA_CONTEXT)
public void onPostCommit(DataContext.PostSaveEvent event) {
    if (justCreated) {
        dialogs.createOptionDialog()
                .withHeader("Email")
                .withText("Send the news item by email?")
                .withActions(
                        new DialogAction(DialogAction.Type.YES) {
                            @Override
                            public void actionPerform(Component component) {
                                try {
                                    sendByEmail();
                                } catch (IOException e) {
                                    log.error("Error sending email", e);
                                }
                            }
                        },
                        new DialogAction(DialogAction.Type.NO)
                )
                .open();
    }
}

@Autowired
private Emailer emailer;

@Autowired
protected Resources resources;

private void sendByEmail() throws IOException {
    InputStream resourceAsStream = resources.getResourceAsStream("META-INF/resources/icons/tegasre.png");
    if (resourceAsStream == null) {
        throw new IOException("Resource 'email/ex1/logo.png' not found.");
    }
    byte[] bytes = IOUtils.toByteArray(resourceAsStream);
    EmailAttachment emailAtt = new EmailAttachment(bytes,
            "logo.png", "logoId");
    NewsItem newsItem = getEditedEntity();
    EmailInfo emailInfo = EmailInfoBuilder.create()
            .setAddresses("john.doe@company.com,jane.doe@company.com")
            .setSubject(newsItem.getCaption())
            .setFrom(null)
            .setBody(newsItem.getContent())
            .setAttachments(emailAtt)
            .build();
    emailer.sendEmailAsync(emailInfo);
}

}