While using Hostinger Email, there may be a situation when your email service is automatically disabled and/or the status of your email account is Suspended:
The main reason behind that is that your emails are being flagged as spam. When this happens, you can no longer send emails.
To re-enable the email service, you need to fix the root cause by applying these measures:
This will prevent your services from being suspended again shortly after they are re-enabled.
Once you consider and implement the above-given suggestions, reactivate the email account manually to be able to send and receive emails again.