Posted by garygao 4 hours ago
We originally started by building products on top of iMessage because the blue bubble interface, typing indicators, and reactions made agentic conversations feel more human than ones on SMS/RCS. These included a one-shot iMessage agent builder that reached 2,000 users in one week and an automated iMessage outbound sequencer that sent thousands of outbound messages per day.
The hard part is that iMessage does not have a native API like SMS/RCS. Sending and receiving iMessages requires a separate infrastructure that is difficult to set up and maintain, especially at scale.
As we talked to more companies, we realized that the highest-volume use cases for iMessage were not B2C agents or even sales. They were things like customer service, missed-call text-back, cart abandonment, and inbound lead capture in verticals like home services, DTC brands, and property management that drive the highest volume.
Furthermore, these companies often need additional support, such as custom infrastructure setup (e.g. contact card, area code, or local worker sessions), integration support with their existing SMS/RCS or voice agent systems, and a reliable way to scale their volume over time.
We built Chert to be an infrastructure layer for businesses to handle iMessage conversations at scale. Businesses can use our API to send and receive iMessages programmatically, route replies to humans or agents, and integrate conversations into the systems they already use.
To maintain stability across both outbound and inbound use cases, we built phone line health checks and SMS/RCS fallback systems. We also integrate with existing SMS/RCS systems, voice agents, CRMs such as Salesforce, HubSpot, and Attio, and tools like Slack. Finally, we let businesses reliably scale from a few test lines to hundreds of lines with automated line provisioning and a usage-based pricing structure.
We’re working with companies doing conversational messaging in DTC, sports programs, property management, and home services at the scale of hundreds of lines.
We’d love to hear your thoughts on this and other similar verticals where iMessage could be useful. All comments welcome!
https://blooio.com/ https://www.sendblue.com/ https://www.lindy.ai/ etc?
I will say I am the exact opposite of your market, I want absolutely nothing like this. In fact I'd prefer iMessage to allow ZERO programmatic interfacing.
RCS fallbacks, Emoji reactions, typing indicators, even changing chat background
Would you mind detailing your reasoning why agents should feel humans, when they very obviously aren’t? Why should we want AI to impersonate humans?
What we mean is that conversation should feel natural and low-friction for the person receiving it. These interactions: blue bubble interface, typing indicators, and reactions will make it less like an automated SMS message and more like a normal messaging flow.
We are trying to make agentic communication clear, useful, and native to channels people already use!
How do you ban bad actors so they can't spam again?
Does a user have to initiate contact in order to have messages sent to them?
You should have answers for those points if you want to build trust with end users
Also, while we can't see the exact messages that our customers are sending due to encryption on our servers, we do know when a phone line is close to being banned from our health checks. When that happens, we'll reach out to our customers asap and learn more about what is going on.
I don't get the distinction you're making. I'm not an expert in mobile messaging so maybe I am missing something obvious.
And what about WhatsApp?
My iMessages are for conversations with people that I actually want to talk to. The notifications are high priority because it’s with people that I want to talk to.
I can’t imagine my annoyance if I were to receive an iMessage notification while I’m expecting an important message, only to find that it’s more spam.
My email inbox is already a wasteland because of this. The absolute last thing I need or want is for the same thing to happen to iMessage.
edit: more research
> Chert is in the Sendblue/Blooio lineage, which runs genuine Apple software on real Macs logged into real Apple IDs. They're almost certainly not doing "Beeper Plus again."
https://www.apple.com/legal/privacy/data/en/messages/
Seems pretty damn clear.
That is obvious from all the upvotes your comments get on here.