I’m having trouble with my Python script that uses Mailgun’s API to send emails. The code runs without throwing any exceptions, but the emails never show up in my inbox or spam folder. I’ve double-checked my API credentials and they seem correct. The function executes successfully but no messages are being delivered. Has anyone experienced similar issues with Mailgun’s email service?
import requests
def dispatch_email():
response = requests.post(
"https://api.mailgun.net/v3/sandbox45fc7b2198c851d7b945cc64e88e3f42.mailgun.org/messages",
auth=("api", "YOUR_API_KEY"),
data={
"from": "Test Sender <[email protected]>",
"to": ["[email protected]", "[email protected]"],
"subject": "Test Message",
"text": "This is a test email via Mailgun API!"
}
)
return response
check ur mailgun activity logs first - that’s where u’ll see if msgs are getting processed or rejected. i had similar issues and it turned out my sending domain wasn’t properly auth’d even tho the api key was fine. also, make sure ur recipient emails are real or they might get dropped.
Your response handling is probably the issue. Just because your function doesn’t throw exceptions doesn’t mean it’s working. Check the actual HTTP response status and content - Mailgun sends back specific error codes and messages that’ll tell you what’s wrong. I hit the same silent failures when my domain wasn’t verified or my DNS records were messed up. Add some basic response checking like print(response.status_code) and print(response.text) to see what Mailgun’s actually returning. The API might accept your request but send back delivery warnings you’re missing.
You’re using Mailgun’s sandbox domain - that’s your problem. Sandbox domains only send emails to authorized recipients you’ve added through your Mailgun dashboard. If [email protected] and [email protected] aren’t on that list, the API accepts the emails but never delivers them. I hit this same issue when I started testing with Mailgun. Either add your test emails as authorized recipients in your control panel, or just set up a custom domain for real delivery. Check your Mailgun logs in the dashboard to see what’s actually happening with your messages.