diff --git a/check_x_capacity.py b/check_x_capacity.py
index f0377e0..ac87bcf 100755
--- a/check_x_capacity.py
+++ b/check_x_capacity.py
@@ -8,6 +8,10 @@ from foodie_utils import (
 import time
 import sys
 import os
+import smtplib
+from email.mime.text import MIMEText
+from email.mime.multipart import MIMEMultipart
+from foodie_config import EMAIL_CONFIG
 
 # Configure logging
 logging.basicConfig(
@@ -16,6 +20,39 @@ logging.basicConfig(
 )
 logger = logging.getLogger(__name__)
 
+def send_capacity_alert(username, remaining, reset_time):
+    """Send email alert when an author's tweet capacity is full."""
+    try:
+        msg = MIMEMultipart()
+        msg['From'] = EMAIL_CONFIG['from_email']
+        msg['To'] = EMAIL_CONFIG['to_email']
+        msg['Subject'] = f"⚠️ X Capacity Alert: {username}"
+        
+        body = f"""
+        X Tweet Capacity Alert!
+        
+        Username: {username}
+        Time: {datetime.now(timezone.utc).strftime('%Y-%m-%d %H:%M:%S UTC')}
+        Remaining Tweets: {remaining}/17
+        Reset Time: {reset_time}
+        
+        This author has reached their daily tweet limit.
+        The quota will reset at the time shown above.
+        
+        This is an automated alert from your foodie_automator system.
+        """
+        
+        msg.attach(MIMEText(body, 'plain'))
+        
+        with smtplib.SMTP(EMAIL_CONFIG['smtp_server'], EMAIL_CONFIG['smtp_port']) as server:
+            server.starttls()
+            server.login(EMAIL_CONFIG['smtp_username'], EMAIL_CONFIG['smtp_password'])
+            server.send_message(msg)
+            
+        logger.info(f"Sent capacity alert email for {username}")
+    except Exception as e:
+        logger.error(f"Failed to send capacity alert email: {e}")
+
 def display_author_status(author):
     """Display detailed status for a single author."""
     username = author['username']
@@ -38,6 +75,10 @@ def display_author_status(author):
     print(f"  • Reset time: {reset_time}")
     print(f"  • Can post: {'Yes' if can_post else 'No'}")
     
+    # Send alert if capacity is full
+    if remaining == 0:
+        send_capacity_alert(username, remaining, reset_time)
+    
     # Show API status for verification
     if not is_any_script_running():
         api_remaining, api_reset = get_x_rate_limit_status(author)