Python 3.x 无法准确估计我通过smtplib发送的电子邮件数量

我正在编写一个代码，使用smtplib通过Python发送电子邮件，并试图制作一个计数器，在执行键盘中断之前查看我发送了多少邮件

这是密码

import smtplib, ssl

port = 465
smtp_server = "smtp.gmail.com"
sender_email = "generic@gmail.com"

password = input("Type your password and press enter: ")

receiver_email = str(input("Enter Receiver's Email: :"))

subject = str(input("Enter Subject: : "))
m = str(input("Enter Message: :"))

message = """\
Subject: {sub}

{msg}.""".format(sub = subject, msg = m)

context = ssl.create_default_context()
t = 1
x = 0

server = smtplib.SMTP_SSL(smtp_server, port, context=context)
server.login(sender_email, password)

while t == 1:
    try:
        
        server.sendmail(sender_email,receiver_email,message)
        x += 1

    except KeyboardInterrupt:
        t = 0
print("Message Successfully Sent", x, "time(s).")

现在，当我运行代码时，有时会得到一个大于预期的数字，有时会得到正确的数字，有时会得到一个小于预期的数字。我该如何解决这个问题