<p>Thanks for all the suggestions. I ended up going with Downtime Monkey. They're very cheap and seem to tick all the boxes for me.</p><p><a href="https://downtimemonkey.com" target="_blank" rel="nofollow noopener noreferrer" translate="no"><span class="invisible">https://</span><span class="">downtimemonkey.com</span><span class="invisible"></span></a></p>
