Most probably this error happened because of a wrong configure in the SendGrid (Email Provider) settings or there's an issue in the sending emails process itself in SendGrid.


In this article you will be going to know about:

How to investigate the reason that caused this error?


You can investigate the reason for such an error by checking the configuration details of the defined SendGrid as shown below:


  • You as a merchant don't receive the post-payment notifications, in this case, navigate to Developers > Payment Notifications > Configurations.



    Then check the configuration details for the defined SendGrid IPN


  • Your customers don't receive the post-payment notifications, in this case, navigate to Developers > Payment Notifications > Customer email receipt.


    Then check the configuration details for the defined SendGrid account


Reason #1: SendGrid configuration fields are not matched


This means that either the API key is not valid/correct, or both the "From" and "To" in the merchant IPN configuration page (or the "From email" in the customer email receipt configuration page) is not the same one defined in your SendGrid account itself. These miss matches are able to prevent the post-payment notifications emails from being sent to you or your client. To know more about how to configure them right, you can check our "How to integrate my Paytabs account with my SendGrid account?" solution article.


In this case, all you need to do is just modify them to be valid and the same as your SendGrid account's ones, and notification should be sent successfully after that,

Reason #2: SendGrid has bounced the receiver email

This means that SendGrid tried to send emails to you/your customer several times but got dropped from your email service provider/your email server, so it bounced your email (it happens most with corporate domains such as [email protected]).

In this case, you will need to ask your IT team to follow the below steps:

  1. Check your email provider:
    1.1 Add  [email protected] to the list of safe senders
    1.2 Remove  [email protected] from blocked senders
    1.3 Whitelist IP 149.72.70.94


If you did all these steps and still have not received any emails, kindly email us at ([email protected]) to double-check whether there anything can be done from the SendGrid side.