Gonçalo Peres

Rollback to version 1.6.1 or see a temporary fix here:
https://wordpress.org/support/topic/1-6-settings-page/#post-11175651

Same problem here, also using WordPress Multisite 4.9.8.
You cannot change the settings on wp-config.php on a Multisite instalation, because all sites share the same wp-config.php file and we need different settings for each domain.
Went back to version 1.5.14 until this is fixed.

Yes, this is very annoying.
<a href="*|SP:CONFIRMLINK|*">Manage subscription</a>
becomes
<a href="*CONFIRMLINK|*">Manage subscription</a>
after updating on the “Edit Email Content” screen.

Please correct this.

Thank you.

Greetings.

I just managed to implement a email search feature, in a light and very user friendly manner, without altering the Sendpress Plugin.

Maybe Josh can use it, if it is to his liking. It’s easy to change this code to also allow search by names.

So here we go.

This changes were made in a custom theme. You just need to edit your functions.php file and add a admin.js file (or use an existing one).

your-theme-directory/functions.php

//simple check to save cpu cycles
if($_REQUEST['page']=='sp-subscribers' && ($_REQUEST['view']=='subscribers' || $_REQUEST['view']=='subscriber') ) {
	add_action( 'admin_print_styles', 'my_theme_admin_print_styles' );
	add_action( 'admin_print_scripts', 'my_theme_admin_print_scripts' );

	function my_theme_admin_print_styles() {
		//you can get css file and images at http://jqueryui.com/download/
		wp_enqueue_style('jquery-ui-lightness', get_template_directory_uri().'/ui-lightness/jquery-ui-1.10.3.custom.min.css' );
	}
	function my_theme_admin_print_scripts() {
		wp_enqueue_script('jquery-ui-autocomplete');
		wp_enqueue_script('my-theme-admin-script', get_template_directory_uri().'/admin.js');
	}
}

if($_REQUEST['action']=='generic_ajax') {
	add_action('wp_ajax_generic_ajax', 'my_theme_generic_ajax');

	function my_theme_generic_ajax() {
		global $wpdb;	

		if( $_GET['ajax_do'] == 'sp_subscriber_search' && strlen($_GET['term']) > 2) {
			$sql = "SELECT t1.email AS label, t1.subscriberID AS value
			FROM ".$wpdb->prefix."sendpress_subscribers AS t1
			RIGHT JOIN ".$wpdb->prefix."sendpress_list_subscribers AS t2 ON (t1.subscriberID = t2.subscriberID AND t2.listID = ".(int)$_GET['listID'].")
			WHERE t1.email LIKE '%".$wpdb->escape($_GET['term'])."%'
			ORDER BY t1.email";
			die(json_encode($wpdb->get_results($sql)));
		}
		die();
	}
}

your-theme-directory/admin.js

jQuery(document).ready(function($) { 

	//if there is a hidden input for listID, it means we are on a valid search page
	$listID = $('input[type="hidden"][name="listID"]').val();
	if( $listID ) {
		//add search input to subscribers pages
		$html = '<form><input type="search" id="sp-search-by-email-input" name="s" value="" /><label> (search by email)</label></form>';
		$('#taskbar h2').after($html);
		$( "#sp-search-by-email-input" ).autocomplete({
      source: ajaxurl+'?action=generic_ajax&ajax_do=sp_subscriber_search',
      minLength: 3,
      select: function( event, ui ) {
				window.location = '?page=sp-subscribers&view=subscriber&subscriberID='+ui.item.value+'&listID='+$listID;
      }
    });

		//add delete button do edit subscriber page
		if($('form#subscriber-edit').length > 0) {
			$html = ' <a class="btn" href="?page=sp-subscribers&action=delete-subscriber&subscriberID='+$('input[name="subscriberID"]').val()+'&listID='+$('input[name="listID"]').val()+'">Delete from this List</a>';
			$('form#subscriber-edit input[type="submit"]').after($html);
		}
	}
}

Hope you enjoy this and thank toy for this great plugin.

Gonçalo Peres