SureMail and EmailIT

I raised a ticket for this one a little while ago and have got more and more concerned as time moves on, and as of today, I still haven’t seen a changelog entry to cover this change within Suremail, but Emailit is sunsetting their V1 API in just 2 days (end of Feb) I don’t have enough details on what will happen here i.e will they put a forwarder in place.

I am ok, I have Notify for suremail installed on every single site I have SureMail on, and it will tell me if delivery fails because of this, but I wanted to be ready, as far as I can tell in testing, the change is simply a case of changing the endpoint v1 —> v2 but I can’t sub class this as its a private but thankfully its a http request so we can swap it out.

So I have done some further testing this evening and have decided this seems to work great, and have prepared a patch I can deploy to my sites as needed to prevent any further issues in testing. It works; the error logs perfectly prove interception is happening, and the emails are being delivered.

<?php
/**
 * Force SureMails Emailit endpoint to v2.
 */

add_filter('pre_http_request', function ($preempt, $args, $url) {

    // Change this to the URL you want to replace.
    $old = 'https://api.emailit.com/v1/emails';
    $new = 'https://api.emailit.com/v2/emails';

    // Only swap when it matches exactly (or use strpos if needed).
    if ($url !== $old) {
        return $preempt; // let WP handle everything else normally
    }

    // Prevent infinite recursion when we call wp_safe_remote_post() below.
    static $in_progress = false;
    if ($in_progress) {
        return $preempt;
    }
    $in_progress = true;
    
    
    // Optional Log interception
    //error_log('[SureMails Emailit Override] Intercepted request: ' . $url);
    //error_log('[SureMails Emailit Override] Redirecting to: ' . $new);


    // Perform the request to the new endpoint with the same args.
    $response = wp_safe_remote_request($new, $args);

    $in_progress = false;

    // Returning a response array here short-circuits the original request.
    return $response;

}, 10, 3);

<?php
/**
 * Force SureMails Emailit endpoint to v2.
 */

add_filter('pre_http_request', function ($preempt, $args, $url) {

    // Change this to the URL you want to replace.
    $old = 'https://api.emailit.com/v1/emails';
    $new = 'https://api.emailit.com/v2/emails';

    // Only swap when it matches exactly (or use strpos if needed).
    if ($url !== $old) {
        return $preempt; // let WP handle everything else normally
    }

    // Prevent infinite recursion when we call wp_safe_remote_post() below.
    static $in_progress = false;
    if ($in_progress) {
        return $preempt;
    }
    $in_progress = true;
    
    
    // Optional Log interception
    //error_log('[SureMails Emailit Override] Intercepted request: ' . $url);
    //error_log('[SureMails Emailit Override] Redirecting to: ' . $new);


    // Perform the request to the new endpoint with the same args.
    $response = wp_safe_remote_request($new, $args);

    $in_progress = false;

    // Returning a response array here short-circuits the original request.
    return $response;

}, 10, 3);

This patch if nessary means I am prepared even if SureMail hasn’t updated before the sunsets of V1, I can use my deploy script and emergency updates to get this on every site within about 10 minutes of becoming aware on Saturday.

Update: 27th Feb 2026

I got an email to say an update has been released this morning, and this includes the API changes for Emailit