diff --git a/src/mailman.scm b/src/mailman.scm
index cbb5c62..6854afb 100644
--- a/src/mailman.scm
+++ b/src/mailman.scm
@@ -111,7 +111,8 @@
  (define (find-mailman-list lsts name)
    (assoc name lsts))
 
- (define-mailman-proc add-email-to-mailman-list add-email-to-mailman2-list)
+ (define-mailman-proc add-email-to-mailman-list
+   add-email-to-mailman2-list add-email-to-mailman3-list)
  (define-mailman-proc remove-email-from-mailman-list remove-email-from-mailman2-list)
 
  ;; Ensures given email is in given ML
diff --git a/src/mailman3.scm b/src/mailman3.scm
index 23986ee..7c0ffe3 100644
--- a/src/mailman3.scm
+++ b/src/mailman3.scm
@@ -30,6 +30,8 @@
  (
   list-mailman3-lists
   list-mailman3-list-members
+
+  add-email-to-mailman3-list
   )
 
  (import scheme
@@ -41,17 +43,30 @@
 	 util-io
 	 util-list)
 
+ ;; Just a convenient converter
+ (define (mailman3:cmd+args0)
+   (let ((cmd+args0 (string-split (*mailman3-bin*) " ")))
+     (values (car cmd+args0)
+	     (cdr cmd+args0))))
+
  ;; Runs the mailman3 binary with any arguments and returns the lines
  ;; produced on stdout
  (define (get-mailman3-output-lines . args1)
-   (let* ((cmd+args0 (string-split (*mailman3-bin*) " "))
-	  (cmd (car cmd+args0))
-	  (args0 (cdr cmd+args0)))
+   (let-values (((cmd args0) (mailman3:cmd+args0)))
      (apply
       get-process-output-lines
       cmd
       (append args0 args1))))
 
+ ;; Sends all lines to the process
+ (define (mailman3-send/recv args1 . lines)
+   (let-values (((cmd args0) (mailman3:cmd+args0)))
+     (apply
+      process-send/recv
+      cmd
+      (append args0 args1)
+      lines)))
+
  ;; Returns the list of available lists
  (define (list-mailman3-lists)
    (filter
@@ -71,4 +86,16 @@
 			       "-e")
     string-ci<?))
 
+ ;; Adds given email
+ (define (add-email-to-mailman3-list lst email)
+   (print "Add " email " to " lst ".")
+   (let ((result
+	  (mailman3-send/recv
+	   (list "addmembers" "-" (format "~A@brmlab.cz" lst))
+	   email)))
+     (let loop ((lines result))
+       (when (not (null? lines))
+	 (print " | " (car lines))
+	 (loop (cdr lines))))))
+
  )