diff --git a/src/remember_remember_bot/commands.py b/src/remember_remember_bot/commands.py
index 6f8b256..c80b098 100644
--- a/src/remember_remember_bot/commands.py
+++ b/src/remember_remember_bot/commands.py
@@ -3,6 +3,7 @@ from remember_remember_bot.util import (
     chat_is_active,
     get_file_path,
     get_lines_from_file,
+    today_lines,
 )
 
 
@@ -17,7 +18,9 @@ def remind_chat(chat: deltachat.Chat):
     if chat_is_active(messages):
         file_path = get_file_path(messages)
         lines = get_lines_from_file(file_path)
-        print(lines)
+        message_text = "\n".join(today_lines(lines))
+        print(message_text)
+        chat.send_text(message_text)
 
 
 def activate_chat(msg: deltachat.Message):
diff --git a/src/remember_remember_bot/util.py b/src/remember_remember_bot/util.py
index 12dc949..6e4bdda 100644
--- a/src/remember_remember_bot/util.py
+++ b/src/remember_remember_bot/util.py
@@ -59,3 +59,25 @@ def get_lines_from_file(file_path: str) -> [str]:
     except (FileNotFoundError, TypeError):
         return [f"File not found: {file_path}"]
     return [line.strip("\n") for line in lines]
+
+
+def today_lines(lines: [str]):
+    """Out of several lines from the file, only return those with the same date as today.
+
+    :param lines: a list of lines with a date in the beginning.
+    :return: a list of lines, all from today.
+    """
+    result = []
+    for line in lines:
+        try:
+            day = int(line.split(".")[0])
+            month = int(line.split(".")[1])
+        except ValueError:
+            print(f"wrong format: {line}")
+            continue
+        if (
+            day == datetime.datetime.now().day
+            and month == datetime.datetime.now().month
+        ):
+            result.append(line)
+    return result
diff --git a/tests/test_util.py b/tests/test_util.py
index 649e400..50cfe5b 100644
--- a/tests/test_util.py
+++ b/tests/test_util.py
@@ -3,8 +3,10 @@ from remember_remember_bot.util import (
     update_day,
     chat_is_active,
     get_file_path,
+    today_lines,
 )
 import pytest
+import datetime
 
 
 def test_update_day():
@@ -53,3 +55,19 @@ def test_get_file_path(messages: [], tmp_file_path: str):
                 "%file_path%", tmp_file_path
             )
     assert get_file_path(messages) == tmp_file_path
+
+
+def test_today_lines():
+    day = datetime.datetime.now().day
+    month = datetime.datetime.now().month
+    year = datetime.datetime.now().year
+    lines = [
+        f"{day}.{month}.{year}\tToday I had a great day!",
+        f"{day}.{month}.2020\tI didn't go outside all day :) no appointments",
+        "03.13.2024\tNice how they invented a 13th month extra for the Satanists!",
+    ]
+    result = today_lines(lines)
+    print(result)
+    assert len(result) == 2
+    assert result[0] == lines[0]
+    assert result[1] == lines[1]