common/services/entities/NewsletterMemberService.php
public function deleteByEmail( $email, $config = [] ) {

		$member	= $this->getByEmail( $email );

		if( isset( $member ) ) {

			$modelClass	= static::$modelClass;

			// Delete from mailing list
			Yii::$app->factory->get( 'newsletterListService' )->deleteByMemberId( $member->id );

			// Delete member
			return $modelClass::deleteByEmail( $email );
		}

		return false;
	}
public function deleteByEmail( $email, $config = [] ) {

		$member	= $this->getByEmail( $email );

		if( isset( $member ) ) {

			$modelClass	= static::$modelClass;

			// Delete from mailing list
			Yii::$app->factory->get( 'newsletterListService' )->deleteByMemberId( $member->id );

			// Delete member
			return $modelClass::deleteByEmail( $email );
		}

		return false;
	}
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