User Assignee - not getting mail

I tried to deploy the below diagram with user assignee for both the tasks and a timer - PT10S, but I am not getting any mail.

Any help is much appreciated.

Thank You

HI @_yUki,
By default, Camunda does not send e-mails if a user task is assigned. Some extension is necessary:
Read up in the following thread:

And have a look at the following repository:

Thank you @StephanHaarmann

Let me check that.