Follow the below gievn steps, to fix WHMCS error: "Email send aborted by Hook".

Step::1 Login to your WHMCS Interface.

Step::2 Navigate to Setup section and click on General settings.

Step::3 Now jump onto the Other section and search for Hooks debug mode option.

Step::4 Enable the Hooks Debug Mode option.

Step::5 Click on Save changes.

Step::6 Now go back to WHMCS Home page and go to Utilities section.

Step::7 Click on Activity log option to display the error.

Step::9 Locate the “Email Send Aborted By Hook” error in the log

That's It !
Check the video tutorial to know the procedure in detail. You may check out the blog as well.
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