diff --git a/gmail_birthday_sender/README.md b/gmail_birthday_sender/README.md
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+# Gmail Birthday Sender
+
+This script automatically sends birthday wishes via Gmail.
+You just need to enter your information at beginning.
+
+## Requirements
+
+- Python 3
+
+## Instructions
+
+1. Create google account
+2. Turn on [2-Step Verification](https://support.google.com/accounts/answer/185839)
+3. Create [an application password](https://support.google.com/accounts/answer/185833#zippy=%2Cremove-app-passwords)
+
+### Enter your information in `main.py`
+
+- Enter your gmail account, your name and application password
+
+```py
+your_name = "your_real_name"
+your_email = "your_account@gmail.com"
+password = "your_gmailpassword"
+```
+
+- Enter recipient's information here
+
+```py
+    # Change John to recipient's name
+    "John": {
+        # Change john@example.com into real recipient's email
+        "email": "john@example.com",
+        # Change Month and Day of a birthday
+        "birthday": datetime.date(1995, 12, 31),
+```
+
+(Example)
+Name: John
+Email: john@example.com,
+Year, Month and Day of a birthday: 1995, 12, 31
+
+- Enter absolute path to a attachement file if you want
+
+```py
+        "attachment": "/path/to/john_card.pdf"
+        },
+```
+
+If you don't need, write `None` instead
+
+```py
+        "attachment": None
+```
+
+- If you want to change the subject and body of email, modify below string
+
+```py
+        subject = f"Happy birthday {name}!"
+        body = f"""Dear {name},
+
+        Wishing you a very happy birthday filled with love, laughter, and joy!
+        May all your dreams and aspirations come true.
+        Looking forward to seeing you soon! Have a fantastic birthday!
+
+        Best wishes, {self.your_name}"""
+```
+
+### Run the script
+
+After you're done installing Python and pip, run the following command from your terminal to install the requirements from the same folder (directory) of the project.
+
+```bash
+pip install -r requirements.txt
+```
+
+After satisfying all the requirements for the project, Open the terminal in the project folder and run
+
+```bash
+python dictionary.py
+```
+
+or
+
+```bash
+python3 dictionary.py
+```
+
+> [!IMPORTANT]
+> Script should be run anytime to send birthday wishes automatically
+
+## Output
+
+![Example of output](example_of_birthday_sender.png)
+
+## Disclaimers, if any
+
+> [!WARNING]
+> This script lacks strong security for your email
diff --git a/gmail_birthday_sender/example_of_birthday_sender.png b/gmail_birthday_sender/example_of_birthday_sender.png
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diff --git a/gmail_birthday_sender/main.py b/gmail_birthday_sender/main.py
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+import yagmail
+import datetime
+import schedule
+import time
+import os
+from typing import Optional
+
+# Input your information by chnaging string part from here---------------------
+# used for email body (e.g. sincerely <myname>)
+your_name = "your_real_name"
+your_email = "your_account@gmail.com"
+# Your application password can be used only after 2-step verification
+password = "your_gmailpassword"
+
+# Enter recipient information below
+
+birthday_list = {
+    # Change John to recipient's name
+    "John": {
+        # Change john@example.com into real recipient's email
+        "email": "john@example.com",
+        # Change Year, Month and Day of a birthday
+        "birthday": datetime.date(1995, 12, 31),
+        # Enter an absolute path to attachement file
+        "attachment": "/path/to/john_card.pdf",
+    },
+    "Jane": {
+        "email": "jane@example.com",
+        "birthday": datetime.date(2001, 8, 22),
+        "attachment": None,  # 添付ファイルなし
+    },  # Add other recipient from a below line
+}
+# -----------------------------------------------------------------------------
+
+
+class BirthdaySender:
+    """This automatically sends birthday wishes via Gmail."""
+
+    def __init__(self, your_name, your_email, password) -> None:
+        self.your_name = your_name
+        self.sender_email = your_email
+        self.birthday_list = birthday_list
+        # for safer password storage
+        yagmail.register(your_email, password)
+        self.yag = yagmail.SMTP(your_email)
+
+    def send_email(
+        self, name: str, to_email: str, attachment_path: Optional[str] = None
+    ) -> None:
+        """Include attachement to email file if it is needed"""
+
+        # If you want to change the content, modify below----------------------
+        subject = f"Happy birthday {name}!"
+        body = f"""Dear {name},
+
+        Wishing you a very happy birthday filled with love, laughter, and joy!
+        May all your dreams and aspirations come true.
+        Looking forward to seeing you soon! Have a fantastic birthday!
+
+        Best wishes, {self.your_name}"""
+        # ---------------------------------------------------------------------
+
+        email_params = {"to": to_email, "subject": subject, "contents": body}
+
+        if attachment_path and os.path.exists(attachment_path):
+            email_params["attachments"] = attachment_path
+            print(f"{attachment_path} was included")
+
+        try:
+            self.yag.send(**email_params)
+            print(f"Sent to {name}")
+        except Exception as e:
+            print(f"Failed to send email to {name}, Error: {e}")
+
+    def send_email_if_birthday(self) -> None:
+        """Call send_email if today is birthday"""
+        today = datetime.date.today()
+
+        for name, info in self.birthday_list.items():
+            birthday = info["birthday"]
+            if today.month == birthday.month and today.day == birthday.day:
+                return self.send_email(name, info["email"], info["attachment"])
+
+    def run(self):
+        return self.send_email_if_birthday()
+
+
+if __name__ == "__main__":
+    birthday_sender = BirthdaySender(your_name, your_email, password)
+
+    schedule.every().day.at("07:00").do(birthday_sender.run)
+
+    try:
+        while True:
+            schedule.run_pending()
+            time.sleep(1)
+    except KeyboardInterrupt:
+        print("Birthday sending stopped")
+    except Exception as e:
+        print(f"An error: {e}")
diff --git a/gmail_birthday_sender/requirements.txt b/gmail_birthday_sender/requirements.txt
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+cachetools==5.5.0
+certifi==2024.8.30
+charset-normalizer==3.3.2
+cssselect==1.2.0
+cssutils==2.11.1
+flake8==7.1.1
+idna==3.8
+jaraco.classes==3.4.0
+jaraco.context==6.0.1
+jaraco.functools==4.0.2
+keyring==25.4.1
+lxml==5.3.0
+mccabe==0.7.0
+more-itertools==10.5.0
+premailer==3.10.0
+pycodestyle==2.12.1
+pyflakes==3.2.0
+requests==2.32.3
+schedule==1.2.2
+urllib3==2.2.2
+yagmail==0.15.293