Trigger CBSubs Mailer on shared server

On a shared web server where we cannot configure cron jobs, how does the CBSubs Mailer get triggered? In other words, what backend or frontend option does a user need to invoke to cause the mailer to run against configured options?

I understand the options that trigger emails but what are the user actions that cause the options to be examined?

I do see "Url of cron task to both process mailer rules into queue and then to process mailqueue" under automation settings but wonder if some action(s) such as simply opening the CB component will run that?

There's no user actions for triggering the mailer. You'd need to visit the mailer CRON URL manually if you can't use CRON. Shared hosting typically allows for CRON. If yours doesn't I suggest changing hosts (e.g. SiteGround. DreamHost, and A2Hosting all allow CRON from within cPanel). You need a reliable host when dealing with payments.

Thank you for your quick and perfectly clear response. One solution is to have a menu item visible to a user with the right privileges that links to the mailer cron URL. Another is to create a cron job on another machine. At least now I know. Thank again.

Imho, yet another way would be with CB Auto-action with a trigger on an event of your choice, e.g. onAfterLogin and have an action of type Request with the url for CBSubs Mailer..

Thank you!

Request actions are a blocking operation. So depending on how many emails need to be queued or sent it will delay login until it's done. If you take that approach you'll need to significantly limit how many emails it sends within global mailer settings.

Another approach would be to write some custom JS that you can output using CB Content Module to send an HTTP request to the mailer endpoint. This would allow triggering the mailer in a non-blocking way.