Merge pull request #5427 from akochnev/mailer-doc-fix

Updated mailer docs with option for google password auth , issue #4510

docs/src/main/asciidoc/mailer.adoc

@@ -234,6 +234,7 @@ With TLS:
 
 [source]
 ----
+quarkus.mailer.auth-methods=DIGEST-MD5 CRAM-SHA256 CRAM-SHA1 CRAM-MD5 PLAIN LOGIN
 [email protected]
 quarkus.mailer.host=smtp.gmail.com
 quarkus.mailer.port=587
@@ -245,7 +246,8 @@ quarkus.mailer.password=YOURGENERATEDAPPLICATIONPASSWORD
 Or with SSL:
 
 [source]
-----
+---- 
+quarkus.mailer.auth-methods=DIGEST-MD5 CRAM-SHA256 CRAM-SHA1 CRAM-MD5 PLAIN LOGIN
 [email protected]
 quarkus.mailer.host=smtp.gmail.com
 quarkus.mailer.port=465
@@ -254,6 +256,12 @@ [email protected]
 quarkus.mailer.password=YOURGENERATEDAPPLICATIONPASSWORD
 ----
 
+[NOTE]
+====
+The `quarkus.mailer.auth-methods` configuration option is needed for the Quarkus mailer to support password authentication with Gmail.
+By default both the mailer and Gmail default to `XOAUTH2` which requires registering an application, getting tokens, etc.
+====
+
 == Using SSL with native executables
 
 Note that if you enable SSL for the mailer and you want to build a native executable, you will need to enable the SSL support.