diff --git a/modules/templates/helper.go b/modules/templates/helper.go
index 791958635..61d926ee8 100644
--- a/modules/templates/helper.go
+++ b/modules/templates/helper.go
@@ -498,6 +498,7 @@ func NewTextFuncMap() []texttmpl.FuncMap {
 			}
 			return sum
 		},
+		"QueryEscape": url.QueryEscape,
 	}}
 }
 
diff --git a/templates/mail/auth/activate_email.tmpl b/templates/mail/auth/activate_email.tmpl
index 6a8de5011..a1d7ec37e 100644
--- a/templates/mail/auth/activate_email.tmpl
+++ b/templates/mail/auth/activate_email.tmpl
@@ -5,7 +5,7 @@
 	<title>{{.i18n.Tr "mail.activate_email.title" .DisplayName}}</title>
 </head>
 
-{{ $activate_url := printf "%suser/activate_email?code=%s&email=%s" AppUrl .Code .Email}}
+{{ $activate_url := printf "%suser/activate_email?code=%s&email=%s" AppUrl .Code (QueryEscape .Email)}}
 <body>
 	<p>{{.i18n.Tr "mail.hi_user_x" .DisplayName | Str2html}}</p><br>
 	<p>{{.i18n.Tr "mail.activate_email.text" .ActiveCodeLives | Str2html}}</p><p><a href="{{$activate_url}}">{{$activate_url}}</a></p><br>
