I maintain and develop a program that (amongst other things) sends emails via GMail.
Until now, there have been no problems with sending emails, but a few days ago this functionality ceased to work with a message 'Bad credentials'. I looked through the help of GMail and found this explanation/warning/what-have-you:
To help keep your account secure, from May 30, 2022, Google no longer supports the use of third-party apps or devices which ask you to sign in to your Google Account using only your username and password.
The solution is to use the 'app specific' password.
I looked at this question that states:
My most recent try was to create an 'app specific' password on Gmail
But the attached code doesn't actually show how the password is sent.
Reading the question and its answers, I made some changes to my program:
Port := 995
UseTLS := utUseImplicitTLS
SSLVersions := [sslvTLSv1, sslvTLSv1_1, sslvTLSv1_2]
After these changes, in an attempt to send a test mail (still no app specific password), I get the response
Reply code is not valid: OK
which might mean that my program fails, as it doesn't send the app specific password.
What I want to know is: how to send that password?
CodePudding user response：
An application-specific password is simply a password that Gmail generates for you, and then you use it instead of your normal password (ie, in the TIdSMTP.Password property). This is explained in Gmail's documentation:
CodePudding user response：
You can just replace the password with the apps password. Assuming your code id similar to that below.
popb.Host := 'pop.gmail.com';
popb.username := '[email protected]';
popb.password := 'appsPassword';
popb.Port := 995;
popb.IOHandler := sslpop;
popb.UseTLS := utUseImplicitTLS;
with sslpop do
begin
Destination := 'pop.gmail.com:995';
Host := 'pop.gmail.com';
Port := 995;
DefaultPort := 0;
end;