429 You exceeded the limit of 8 requests per second mail.tm

писал авторегер для mail tm, все вроде нормально но почему то якобы флудит запросами, выдает ошибку Too many requests 429: You exceeded the limit of 8 requests per second! Try delaying the request by one second!
хотя кд стоит 1 секунда, после +- 5 запросов кидает ошибку

if input('start') == 'yes':
while True:
address = ''.join(random.choice(string.ascii_letters + string.digits) for _ in range(12))
time.sleep(1)
reg = requests.post(url+'accounts', json={"address": f"{address}@{domain}", "password": password})
print('send request')
if reg.status_code in [200, 201, 204]:
with open('accounts.txt', 'a') as file:
account = f'{address}@{domain}:{password}\n'
file.write(account)
print(f'registered {address}@{domain}:{password}')
else:
print(f"error: {reg.status_code}")

Python

if input('start') == 'yes':

    while True:

        address = ''.join(random.choice(string.ascii_letters + string.digits) for _ in range(12))

        time.sleep(1)

        reg = requests.post(url+'accounts', json={"address": f"{address}@{domain}", "password": password})

        print('send request')

        if reg.status_code in [200, 201, 204]:

            with open('accounts.txt', 'a') as file:

                account = f'{address}@{domain}:{password}\n'

                file.write(account)

                print(f'registered {address}@{domain}:{password}')

        else:

            print(f"error: {reg.status_code}")