Streamlit application is stuck in running state

Using Streamlit
,
1

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
image

Pls help me out here

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

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

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}")
2

Hey @Madhusudan, it’d be great if you could format your post using a codeblock for the entire app :slightly_smiling_face: 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.

3

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}")
4

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.

5

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