diff --git a/changelog/change_add_mail_to_allowed_methods_of_style_symbol_proc.md b/changelog/change_add_mail_to_allowed_methods_of_style_symbol_proc.md
new file mode 100644
index 0000000000..b8f64ff046
--- /dev/null
+++ b/changelog/change_add_mail_to_allowed_methods_of_style_symbol_proc.md
@@ -0,0 +1 @@
+* [#779](https://github.com/rubocop/rubocop-rails/issues/779): Add `mail` to `AllowedMethods` of `Style/SymbolProc`. ([@koic][])
diff --git a/config/default.yml b/config/default.yml
index 97672a025e..52b8736409 100644
--- a/config/default.yml
+++ b/config/default.yml
@@ -1126,3 +1126,9 @@ Rails/WhereNotWithMultipleConditions:
 # Accept `redirect_to(...) and return` and similar cases.
 Style/AndOr:
   EnforcedStyle: conditionals
+
+Style/SymbolProc:
+  AllowedMethods:
+    - define_method
+    - mail
+    - respond_to