diff --git a/internal/mail/mail.go b/internal/mail/mail.go
index 28774c6..19e7631 100644
--- a/internal/mail/mail.go
+++ b/internal/mail/mail.go
@@ -10,6 +10,7 @@ import (
 	"embed"
 	"fmt"
 	"html/template"
+	"time"
 
 	"github.com/pkg/errors"
 	"gopkg.in/gomail.v2"
@@ -49,6 +50,10 @@ func sendTemplateMail(email, title string, templateFS embed.FS, templatePath str
 	if err != nil {
 		return errors.Wrap(err, "parse template file")
 	}
+
+	// General params.
+	params["year"] = time.Now().Format("2006")
+
 	if err := t.Execute(&content, params); err != nil {
 		return errors.Wrap(err, "execute template")
 	}
diff --git a/templates/mail/new-answer.html b/templates/mail/new-answer.html
index 15b1e30..f4c9199 100644
--- a/templates/mail/new-answer.html
+++ b/templates/mail/new-answer.html
@@ -101,7 +101,7 @@
                   我们向您发送这封邮件来告诉您在 NekoBox 的活动状态，若您未曾使用过 NekoBox，请忽略本邮件。
                 </div>
                 <div style="direction: ltr;">
-                  2022 NekoBox
+                  {{ .year }} NekoBox
                 </div>
               </div>
             </div>
diff --git a/templates/mail/new-question.html b/templates/mail/new-question.html
index 09a787a..e259db5 100644
--- a/templates/mail/new-question.html
+++ b/templates/mail/new-question.html
@@ -90,7 +90,7 @@
                                     我们向您发送这封邮件来告诉您账号的状态，若您未曾在 NekoBox 注册过账号，请忽略本邮件。
                                 </div>
                                 <div style="direction: ltr;">
-                                    2022 NekoBox
+                                    {{ .year }} NekoBox
                                 </div>
                             </div>
                         </div>
diff --git a/templates/mail/password-recovery.html b/templates/mail/password-recovery.html
index 4f5161f..69ab646 100644
--- a/templates/mail/password-recovery.html
+++ b/templates/mail/password-recovery.html
@@ -90,7 +90,7 @@
                                     我们向您发送这封邮件来告诉您账号的状态，若您未曾在 NekoBox 注册过账号，请忽略本邮件。
                                 </div>
                                 <div style="direction: ltr;">
-                                    2022 NekoBox
+                                    {{ .year }} NekoBox
                                 </div>
                             </div>
                         </div>