(This post is more than half a decade old. I’m guessing some of it is outdated by now.)
I won’t write much about Google Business Profile posts and how they’re potentially great for your business, your business’s SEO and your company’s findability. Because other people have already written about that. (Lie. I later wrote a follow-up article about GBP posts: What and Why?)
Instead, I’ll help you figure out how to pre-schedule several posts at once.
Wouldn’t it be nice if Google Business Profiile (AKA: Google My Business) allowed us to schedule future posts? Yeah. That would be nice, Dan. Until that happens, you have a few options.
In no particular order:
Yext allows users to schedule GBP posts. I have never used Yext. I don’t know exactly how much it costs, but I’ve heard rumors of $500/yr and up. I don’t know which of their plans include GBP automation, and they don’t list pricing for any of them, so, you’ll have to contact them for more info.
Sendible lets you schedule GBP posts. I haven’t used Sendible either. Sendible starts at ~$300/yr, and that includes automating your future GBP posts.
Do you use WordPress?
A few WordPress plugins empower you to easily create and auto-publish Google Business Profile posts. I’ll highlight two of them.
WP Google Business Profile Auto Publish is 100% free. $0. If you use it, change the default plugin settings so that it does not publish all posts to GBP automatically. …Unless that’s something you want. (Lazy?) Update: This plugin slows down the backend of WP. It also auto-publishes GBP posts for every existing page you update or edit. I don’t recommend it, unless you’re really lazy and/or cheap. Update 2: An astute reader pointed out that you don’t need to have this plugin set to auto-post, which would solve some of the annoyances. But as this is an article about how to automate GMB posts, using this plugin without the auto-posting feature is, um, yeah. #DefeatsThePurpose Also, about my first recommendation above regarding changing the settings, apparently it either posts every time you update anything, (so much noise) or not at all. No middle ground. Pass on this one unless your criteria are significantly different than mine.
Post to Google Business Profile is by an outfit called Tycoon Media, but that old-school-ritz name isn’t the only reason I think this one is not free. Something on their website mentioned needing their $80/yr plan to support “Post scheduling”.
Back in the day I used the gregariously named ‘WP Google My Business Auto Publish’ on a few sites. I recommend spending a couple of hours to customize and finagle it so that every page-edit doesn’t trigger a new GBP post. I’d also add a checkbox for when I actually want a blog post to be turned into a GBP post. I can’t wrap my head around a good, dual-purpose blog post/Google My Biz post. …They seem like two entirely different things to me, and I would try to squeeze that delineation out of the plugin.
Schedule Google Business Profile Posts Now
Thus concludes our tour of several decent-ish options to automate and schedule Google Business Profile posts. If you’re not going to take the time to login to GBP once every week or so to publish a post, you should probably use one.
In case you’re wondering, Hootsuite doesn’t help here. They’ve known for more than a year that Hootsuite users want GBP post automation. Hootsuite doesn’t seem to care. (Editor’s note: I haven’t checked to see if they eventually added functionality.)
Dan Dreifort consults on SEO and UX. He’s played in a few San Diego punky acts (Cat Shit, Gurtrudestein) and was an occasional sideman in ongoing indie synthpop outfit Incredible Change, but lately has been slumming it with various fleeting avant-garde improv noise projects.
Dan Dreifort 
Landed here from one of your Reddit posts. Cool article! I was looking into ways of automating GMB posts. Never thought about a WP plugin before. Will look into that soon. Thanks!
Glad you liked it. I’ll admit that I am not an expert on the topic, so you might find something better than the couple plugins that I wrote about. Please let me know if you do!
OneUp supports GMB post scheduling too. Only $3/month for up to 10 accounts.
Give Publer a shot. It’s a social media management app (not a WP plugin) and besides Facebook, Twitter and LinkedIn, works also for Google My Business.
You can schedule your posts, view their insights, all from the same spot.