No revenue or profitability figures have been disclosed. Chert is a pre-seed YC Spring 2026 (P26) company with $500,000 in accelerator funding as of May 8, 2026, and states it is already working with B2C startups, sales teams, and customer experience teams, but no financials are public.

Chert Technologies Inc. is privately held, backed by Y Combinator, Z Fellows, and Beta Fund. It raised $500,000 in a single Accelerator round dated May 8, 2026, with no disclosed valuation and no reported acquisition or ownership change as of July 2026.

Could AI replace Chert?

Not directly, since Chert sells infrastructure/plumbing (iMessage API access), not an AI model. The bigger threat is Apple's own official channel: in June 2026 Apple approved third-party AI agent Poke inside native Messages via its sanctioned Messages-for-Business program.

Who is Chert's biggest competitor?

Sendblue, which has operated for 5+ years and is described as the largest iMessage API provider with the broadest feature set. Linq is also a direct rival, already used in production by Lindy.ai as a managed iMessage bridge, as reported July 17, 2026.

Does Chert have an official partnership with Apple?

No. As of July 26, 2026, Chert operates without an official Apple iMessage API, relying on device-fleet management and identity rotation to stay under Apple's abuse-detection heuristics, a method Apple could restrict or ban at any time.

Where is Chert headquartered?

Sources conflict: Chert's YC page and an API directory (July 19, 2026) place the team in San Francisco, while a startup directory and review site (May 19, 2026) list Seattle, WA as headquarters. This discrepancy remains unresolved as of July 26, 2026.

YC Spring 2026 · United States

Chert

Startup selling unofficial iMessage API access so businesses can text customers in blue bubbles.

Little protection left

Assessed 27 July 2026 · Evidence as of 27 July 2026

Not much stands between this business and its pressures.

On the recordSince 27 July 2026 · Checkable from H1 2027 · Every call on the record Checkpoint: Apple's next move to extend or restrict the Poke-style sanctioned channel for business messaging agents

The call

Chert sells access to a platform it doesn't control, in a crowded field, while Apple has already shown it prefers to bless its own official channel instead.

Chert built a tool that lets companies send messages through Apple's iMessage by working around Apple's security checks, instead of using Apple's official channels. This is not hard to copy, which is why five other companies are already doing the same thing, and Apple itself just launched an official way for businesses to send iMessage messages called Poke. The biggest risk is that Apple could simply ban Chert's approach at any moment since Chert has no permission or contract with Apple, and Apple has already shown it prefers companies to use its official Poke channel instead.

Why

AI pressure: None apparent. Chert sells messaging plumbing, not intelligence; AI agents like Poke use channels like this rather than replacing them. Could AI do the core job? Only partly.

Bigger players: Apple. Apple already runs the official Messages-for-Business channel and approved Poke on it in June 2026, leaving Chert's gray-market fleet at Apple's mercy. Could a giant copy it? Yes, easily.

What protects it. None identified; Chert relies on device-fleet rotation to dodge Apple's abuse detection, a tactic five-plus funded rivals also use.

What would change this call

Apple extends or restricts the Poke-style official sanctioned-channel program within 6 months. Shows whether Apple is closing the gray-market path Chert depends on.
Chert announces a follow-on seed round or fails to raise beyond its $500K. Indicates whether investors see a durable business beyond the accelerator stage.
Apple issues account bans targeting device-fleet identity rotation tactics used by Chert and peers. Would show Apple actively enforcing against Chert's core operating method.

Key numbers

$500,000 total disclosed funding (YC accelerator round) (2026-05-07)
5+ funded competitors already in iMessage API space (2026-07-26)
Public launch on Product Hunt (2026-05-19)

Named risks

No official Apple API; entire model depends on Apple tolerating identity-rotation workaround. Severity: high
Crowded category with 5+ funded rivals, including a 5-year incumbent (Sendblue) and a proven production choice (Linq) over Chert. Severity: high
Only $500,000 in disclosed funding as of May 2026 with no reported follow-on raise. Severity: medium
Apple's June 2026 sanctioning of Poke signals a preferred official channel that could sideline unofficial API vendors. Severity: medium
No EU regulatory pressure forcing Apple to open iMessage interoperability after July 2026 DMA ruling. Severity: low

Rivals, as read in July 2026

Rival	Direction	Evidence
Sendblue	losing to	Sendblue has 5+ year head start and broadest feature set per March 28, 2026 comparison
Linq	losing to	Lindy.ai chose Linq over Chert for production iMessage bridging, reported July 17, 2026
Blooio	contesting	Bootstrapped rival with $39/mo flat pricing and RCS support, published comparison content June 18, 2026
Apple (Messages for Business)	losing to	Apple sanctioned AI agent Poke on its own official channel, June 4, 2026, bypassing vendors like Chert
LoopMessage and Photon	contesting	Named as alternative vendors in third-party review aggregator, July 15, 2026

Questions people ask

Is Chert profitable?: No revenue or profitability figures have been disclosed. Chert is a pre-seed YC Spring 2026 (P26) company with $500,000 in accelerator funding as of May 8, 2026, and states it is already working with B2C startups, sales teams, and customer experience teams, but no financials are public.
Who owns Chert?: Chert Technologies Inc. is privately held, backed by Y Combinator, Z Fellows, and Beta Fund. It raised $500,000 in a single Accelerator round dated May 8, 2026, with no disclosed valuation and no reported acquisition or ownership change as of July 2026.
Could AI replace Chert?: Not directly, since Chert sells infrastructure/plumbing (iMessage API access), not an AI model. The bigger threat is Apple's own official channel: in June 2026 Apple approved third-party AI agent Poke inside native Messages via its sanctioned Messages-for-Business program.
Who is Chert's biggest competitor?: Sendblue, which has operated for 5+ years and is described as the largest iMessage API provider with the broadest feature set. Linq is also a direct rival, already used in production by Lindy.ai as a managed iMessage bridge, as reported July 17, 2026.
Does Chert have an official partnership with Apple?: No. As of July 26, 2026, Chert operates without an official Apple iMessage API, relying on device-fleet management and identity rotation to stay under Apple's abuse-detection heuristics, a method Apple could restrict or ban at any time.
Where is Chert headquartered?: Sources conflict: Chert's YC page and an API directory (July 19, 2026) place the team in San Francisco, while a startup directory and review site (May 19, 2026) list Seattle, WA as headquarters. This discrepancy remains unresolved as of July 26, 2026.

Timeline

2026-07-19Chert's API feature set (webhooks, HMAC signing, tapbacks) documented on apis.io
2026-07-17Lindy.ai blog details abandoning in-house iMessage bridge, using rival Linq instead of Chert
2026-07-08EU General Court leaves iMessage undesignated as DMA core platform service
2026-07-02Stork.ai review characterizes Chert's pricing as freemium
2026-06-18Competitor Blooio publishes comparison content targeting iMessage API market
2026-06-04Apple approves third-party AI agent Poke inside native Messages app
2026-05-19Chert launches publicly on Product Hunt, described as live and accepting customers
2026-05-08Chert closes $500,000 Accelerator funding round
2026-05-07Chert confirmed as member of Y Combinator Spring/P26 2026 batch, Launch YC posted

Revision history

27 July 2026

First assessed. Little protection left. The text above is fixed as of this date and is not edited afterwards.

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