gae php mail quota too low, error?

[Jukka Hautakorpi]

I have gae php app that has different php files to send me emails and also some notifications for customers

i have received sometimes errors about the quotas and after testing it, it seems that i can only send 1 - 14 emails / day.

Yesterday i received error once more and it was from the php feedback form that sends only 1 mail to me.

So the limit cannot be "too many emails / second or hour" because there was only 1 mail to be sent to me.

How can the quota limit be so vary and give errors so easily ? i only send 0-20 emails per day.

google\appengine\runtime\OverQuotaError

The API call mail.Send() required more quota than is available.

google\appengine\runtime\ApiProxy::makeSyncCall

Request

POST xxxxxxx.appspot.com/index.php?sivu=palaute

Status

500

User agent

Mozilla/5.0
 (Linux; Android 7.0; SM-G930F Build/NRD90M; wv) AppleWebKit/537.36
(KHTML, like Gecko) Version/4.0 Chrome/61.0.3163.98 Mobile Safari/537.36

Service

default

Version

1

And to be sure you understand, for this 20 max email / day, i won't be changing the code to use the external api, i want to use the old mail-function !

[Jukka Hautakorpi]

And just checked that billing is enabled.

I cannot find mail - limit from the quotas set-page?!

And here are today's quotas:

Mail

If you need a higher mail quota, you can use SendGrid to send email. Learn more 

Resource Usage today Daily quota Per-minute quota Rate limit status 

Mail API Calls

6 of 1 771 789

0 %

-- of 4 928

Standard rate

Recipients Emailed

6 of 100

6 % --

Standard rate

Message Body Data Sent

0,000004 of 29,5764 GB

0 %

-- of 0,08 GB

Standard rate

[Yannick (Cloud Platform Support)]

Hello Jukka, in addition to the quotas, you should also make sure you are not running into one of the following limits: https://cloud.google.com/appengine/docs/standard/python/mail/#quotas_and_limits

Another important question is, what happened once you tried to resend that message? Does it fail again? Can you send other messages?

[Jukka Hautakorpi]

I've seen these limits and they cannot be the reason.
There must be some other bug in the limiting system of sending the mail.
I also got this error by sending manually 4 feedbacks with this form:
tuunixajopaivakirja.appspot.com/index.php?sivu=palaute
(https removed from link)
so there was NO documented limit=quota that could have been exeeded!

what's going on??

[Jukka Hautakorpi]

Please Google check this problem out! It must be a bug in the quota limits!

[Kenworth (Google Cloud Platform)]

Google Groups discussion forum is meant for open-ended discussions. This issue is leading to an increasingly specific situation and may potentially qualify as a defect on the platform. As such, I would recommend you submit a public issue tracker which most likely ask for your project details to further investigate the issue. You can refer to this thread as a background to the issue tracker and feel free to post here any updates that may help community users experiencing same issue.

I look forward to your issue report.