The developer posted on kodular forum two years ago...........
Exactly, this is a limitation
Taifun
Ok I'use only one "mail" extension. thank you
Help with sending emails using the SmtpClient extension
Hello everyone,
I am using the SmtpClient extension by vknow360 (@vknow360) to send emails through my MIT App Inventor application. However, the emails are not being sent, and I am not receiving any specific error message.
I have attached two images showing the blocks I am using, as well as one image of my application setup, so you can see how I have configured everything. I would appreciate your help in identifying what might be going wrong.
Is there any additional setting I need to configure in Gmail or MIT App Inventor to make this work correctly?
Thank you in advance for your time and assistance! 
Probably image didn't get uploaded.
Sorry, but I couldn't find the photos
Assuming you have removed password before posting, where have you used GotError event?
- I haven't set a password because even with a password it doesn't work
- Here is the photo. I put it in and it was successful
You should get error with password, if something is wrong.
Also read:
I've done it. To be sure, do I just need to enter the name of the application and paste the code it gives me?
Yes, that's the app-specific password.
A quick question, should I put the name of my application or the Mit A2 Companion?
You can put any name
But later to still understand, for what exactly you once created that app specific password, it might be a good idea to use your app name
Taifun
Thank you!