How to send a letter every N hours?

Question

Email

Good afternoon
Spam filter periodically shuts up and starts to accumulate a queue of letters. While we are switching to a new solution, I would like to organize an elementary check like "automatic sending of letters every half an hour / hour": if the next letter has not arrived, then something is wrong.
Alas, I could not find such an online tool in the forehead, although the task initially seemed elementary.

Answer 1

I asked myself, and I will answer. It looks like Google Apps Script is the most useful tool here Function
sendMail
()
{
MailApp.sendEmail({
to: "[email protected]",
name: "default",
subject: "Is your mail working?",
body: "Mail is working!"
});
}
+ enable hourly trigger

Answer 2

Well, for starters, it's still worth trying to solve the problem with the spam filter.
But if it's beyond your power then :
scheduled script :
powershell
no \ do not know \ do not want in PoSH then:
www.blat.net - you shove the task scheduler according to the desired schedule and that's it.