Email settings - password missing


I had an Issue with SMTP email settings. I found that my password was removed from Email settings and the password field is emapty.

I used SMTP for more than 3months.
This email integration is very important for my customers, they missed important notifications.

How could this happend?

Thank you.

Hello @Martin_Krajcir1

The server doesn’t send the field to the client for security reason

Why do you think you password is removed?
Have you tried to input your current password and click at the TEST button?

Regards, Vlad

Hello @vladimir-upirov

the SMTP connection stopped working from my app.

When I input password again, and try test button, my app start sending via SMTP.
After a while it stops working again.

Could you please provide you appId, and we will investigate the issue.

here it is


We just checked sending emails using custom SMTP and there is no issues from our side.

When it doesn’t work, which error do you receive?

Look what I found on delayed email in header.

I tried to send the notification email yesterday before 21:22 (CET). Usually, I got a copy immediately.
And yesterday when I did not get the copy I tried to set up a new password before 21:26. After that at 21:26 I got a copy of the email.

See attached screen. Could it be caused by GMail delay?

Thank you.

4 minutes seems like a possible delay

OK, we can close the ticket now.
I will let you know with more detail if this problem happens again with longer delay.

Hello @vladimir-upirov,

today we found another undelivered email issue form our app.
Issue happened at 03/02/2021 14:32:03. Could you plese check your log for our app id 3551EF8F-C241-7579-FF0D-45ECE827AF00?

Thank you for any info.

Hi Martin,

Does your smtp server maintain a log by any chance?


Hi @mark-piller I ask my smtp provider to check the logs. I am waiting for response.
The 1st level support does not know anything about unavailable service.

Hello @mark-piller my SMTP service provider did not find any unavialable service for yesterday.
I found in Backendless log following

2021-03-02 13:32:05,725 | Global logger | ERROR | Send custom template ‘Confirm Retailer Registration’ for ‘’ was failed : Couldn’t connect to host, port:, 465; timeout 10000
2021-03-02 13:32:05,798 | Global logger | ERROR | Result of sending messages using the template ‘Confirm Retailer Registration’ totalCount/failedCount:1/1 : Failed emails:

Did you found someting on your side?

Hi Martin,

The following explains it:

The mail server was not available and we could not connect to it.


Hello guys,

I am going crazy with this SMTP issue.

Right now I see SMTP mailing does not work. From backendless I just GOT response SCHEDULED.
Logging files are absolutely empty. I tried many times send email to address ‘’ unfortunatelly unsucessfull.

Where could be the problem?

  • What does mean status SCHEDULED?

  • Do wou have curerntly some “upgrading time” 21:50 (GMT +1)

  • How Can I get more logs for SMTP connection?

Any idea?

Hi Martin,

When you use the API to send an email, a separate task is created where the email is delivered to your server. That is why the status is SCHEDULED. You can use this API to get the updated status.

Do you mind running a test and sending an email to my email address? You could try sending it


Hi @mark-piller I tried lot of tests and right now 22:33 (GTM+1) it start working again.
I am sending one copy of email to you.

Thank you for API, unfortunately I dont have any message ID. The service in SDK (Angular/JS dependency “backendless”: “^6.2.0”,) return only SCHEDULED without message ID.

Do you use the sendEmail API or sendEmailFromTemplate ?

I use Backendless.Messaging.sendEmail() function from npm package because I need to add Attachement. And sometimes just stoped working right now.

Stopped working right now? The problem is back?

Btw, I created a task to add extra logging when emails are sent through external SMTP servers. For tracking purposes the ticket is BKNDLSS-24356