If you are not receiving emails this could be due to many different reasons. Let’s go through all of them.
Step 1 - Check your DNS Records
To make sure this is not an issue with the settings that you're using, consider going toDNSChecker and check your Domain's MX record value there. If you are using the default Hostinger MX records, the result should look like this:
If you see a different value, you need to change it in your website's DNS Zone Editor. Once you do that, the email service will start working again in the next 24 hours.
Step 2 - Check mail services
If you are able to send but not receive emails, it might be due to your email account’s settings. To check it, open Emails → domain name, click on ⋮ button in front of the email account in question:
And choose Settings:
If Suspend receiving is enabled, just disable it and save changes.