I'd have actually read the article if had been titled: You won't believe how I increased sales by 10% with this one simple trick.
"There is no program" --- it's an app, a bot, a micro-service, a nano-service, a REST Hook, a CLI, a Job, a miner --- "programs" are what gramps wrote!
Gramps was a programmer too, not a developer.
I think a bot implies some level of automated communication with a human (in this case, an email reminder).
If it's just about an email reminder (cron job), "bot" is even more of a buzz-word!
But whatever, good on OP
If I recall correctly every computer program was a bot when I started coding in 2005. YMMV.