Streamlit application is stuck in running state

[Madhusudan]

App is running locally where it is intended to send an email notification using smtp server
Will share the snippet and the requirement.txt below:
2FA is not enabled in xyz@gmail.com
After click submit button

Pls help me out here

import streamlit as st
import smtplib
from email.mime.text import MIMEText

st.title(‘Send Streamlit SMTP Email ’)

st.markdown(“”"
Enter your email, subject, and email body then hit send to receive an email from abc@gmail.com!
“”")

Taking inputs

email_sender = st.text_input(‘From’, ‘xyz@gmail.com’, disabled=True)
email_receiver = “abc@gmail.com”
subject = “sample”
body = “sample”

Hide the password input

password = “samplepwd”

if st.button(“Send Email”):
try:
msg = MIMEText(body)
msg[‘From’] = email_sender
msg[‘To’] = email_receiver
msg[‘Subject’] = subject

    server = smtplib.SMTP('smtp.gmail.com', 587)
    server.starttls()
    server.login(st.secrets["email"]["gmail"], st.secrets["email"]["password"])
    server.sendmail(email_sender, email_receiver, msg.as_string())
    server.quit()

    st.success('Email sent successfully! 🚀')
except Exception as e:
    st.error(f"Failed to send email: {e}")

[raethlein]

Hey @Madhusudan, it’d be great if you could format your post using a codeblock for the entire app You can do it by using following construct:

```
<your code>
```

To the actual question, it’s a little bit difficult to reason about this but maybe the login to the server is just hanging or so? Stucking in the running-state usually means that the script did not finish running from top to bottom and is stuck somewhere, e.g. in an endless loop or maybe here in a network call that does not return.
It might make sense to rule out any Streamlit-related issues by trying your script as a pure Python script before and make sure that sending an email works.

[Madhusudan]

Hello @raethlein ,

here it is . I have provided the correct credentials for the gmail account . From the below code I observed that server is not getting assigned.

import streamlit as st
import smtplib
from email.mime.text import MIMEText

st.title(‘Send Streamlit SMTP Email :love_letter: :rocket:’)

email_sender = st.text_input(‘From’, ‘xyz@gmail.com’, disabled=True)
email_receiver = “[abc@gmail.com](mailto:abc@gmail.com)”
subject = “sample”
body = “sample”
password = “samplepwd”
if st.button(“Send Email”):
try:
msg = MIMEText(body)
msg[‘From’] = email_sender
msg[‘To’] = email_receiver
msg[‘Subject’] = subject
    server = smtplib.SMTP('smtp.gmail.com', 587)
    server.starttls()
    server.login(st.secrets["email"]["gmail"], st.secrets["email"]["password"])
    server.sendmail(email_sender, email_receiver, msg.as_string())
    server.quit()

    st.success('Email sent successfully! 🚀')
except Exception as e:
    st.error(f"Failed to send email: {e}")

[raethlein]

Thank you! Does it work if just do it as a plain Python script like

from email.mime.text import MIMEText

email_sender = 'sample-sender'
email_receiver = '[abc@gmail.com](mailto:abc@gmail.com)'
subject = 'sample'
body = 'sample'
password = 'samplepwd'
try:
    msg = MIMEText(body)
    msg["From"] = email_sender
    msg["To"] = email_receiver
    msg["Subject"] = subject
    server = smtplib.SMTP('smtp.gmail.com', 587)
    server.starttls()
    server.login(st.secrets["email"]["gmail"], st.secrets["email"]["password"])
    server.sendmail(email_sender, email_receiver, msg.as_string())
    server.quit()

    print('Email sent successfully! 🚀')
except Exception as e:
    print(f"Failed to send email: {e}")

and then just execute that via python your-file.py?
Based on the script you provided it does not look like a Streamlit issue to me.