Sending the same email with different attachments to different recipients but the script stops running after 3-4 iterations every time and also the first few mails take 10-15 seconds to send each

[kdarsh17]

My code:

import yagmail
import pandas as pd
import os

data = pd.read_csv('studentscomp32.csv', header=0)
Name = data['Name']
Mail = data['Email']
Course = data['Course']
yag = yagmail.SMTP("username@gmail.com", "pw")
`try:`
    for i in range(len(Name)):
        yag.send(Mail[i],"Certificate of Completion for the course "+Course[i]+" awarded to "+Name[i]," Congratulations, attached with this email is your certificate", attachments=['/home/kyez/Code/CTE Mailer/comp32/'+Name[i]+'.pdf'])
        print("Success")
except:
    print("Fail")

```        ``