frontpage.
newsnewestaskshowjobs

Made with ♥ by @iamnishanth

Open Source @Github

fp.

Open in hackernews

Cloudflare Email Service

https://blog.cloudflare.com/email-for-agents/
81•jilles•1h ago

Comments

bjord•1h ago
finally, more spam!
john_strinlai•1h ago
>Everyone already has an email address, which means everyone can already interact with your application or agent. And your agent can interact with anyone.

please no.

>Sending email that actually reaches inboxes usually means wrestling with SPF, DKIM, and DMARC records. When you add your domain to Email Service, we configure all of it automatically. Your emails are authenticated and delivered, not flagged as spam.

this is going to be an absolute nightmare for spam. i cant exactly block all of cloudflare...

it would be nice if anyone at cloudflare could write about how they plan to proactively reduce abuse of this feature, how they will respond to spam reports, what the punishment for abuse will be, etc.

cuu508•18m ago
Sure you can, look at Spain ;-)
moribvndvs•1h ago
While we’re adding antiquated and shitty ways to interface with your agent, can we add fax support? Maybe direct-to-mail service for postcards and flyers?
tclancy•33m ago
I knew I hung onto that C64 cassette player for a reason! Beyond the new Sturgill album, I mean.
doublerabbit•11m ago
Can we go minidisc if we're going for obsolete tech?
amazingamazing•1h ago
More spam at scale. I wish recipients of email had more control over the conditions to which the email is delivered to them, rather than after the fact curation…
synkarius•44m ago
Along these lines, I am experimenting with a two-tiered system where I use Proton's sieve filters to create a sender/cc/bcc whitelist for personal emails (which alert my phone) and a non-Proton collection of burnable aliases for everything else (which do not alert my phone). It doesn't solve the problem completely, but it is mitigating it pretty well so far.
tornikeo•1h ago
Oof. I know of a startup that recently Show HN'd here, the agent mail.to, that is NOT having a good time right now. I don't know what all these new startups having moats thinner than Durex are thinking -- like, what the plan if someone does what you do, faster and cheaper?
Hendrikto•55m ago
The plan is to have exited by then. These people are mostly just grifters.
delfinom•48m ago
Write an angry blog post about how big business is using their power to kill their _totally_ unique original idea that nobody could possibly copy in a hour?
Kye•41m ago
Classic "is this a feature or a product?" problem. You're going to have a bad time if you spend all your effort on a feature and nothing to set it apart.
CWwdcdk7h•22m ago
> We raised $6M in Seed Funding

Well that part was impressive. It looks like they focused on receiving emails, that is probably even worse, as I expect OpenAI/Anthropic to add such ability directly to agents, if it really is useful.

nozzlegear•21m ago
> new startups having moats thinner than Durex are thinking

Haha, great visual. Really illustrative of what these AI startups and bootstrapped indie developers are dealing with (and, if I had to guess, why most of them don't go anywhere).

baal80spam•1h ago
Ugh, who asked for this?
bdangubic•15m ago
Everyone paying $20/month to Resend et al to send few thousand emails
VikingCoder•54m ago
$0.35 per 1,000 outbound emails. Unlimited inbound emails.

How's that compare?

sammy2255•53m ago
Where did you find the pricing page? I can't find it anywhere
tom1337•47m ago
https://developers.cloudflare.com/email-service/platform/pri...
sammy2255•42m ago
Thanks, hiding the pricing under a submenu called "Platform" is an .. interesting design choice
tom1337•47m ago
AWS SES is 10ct per 1000 emails (same price for inbound + outbound) but you also need to pay for attachments etc.
Hamuko•54m ago
How awful is the reputation on those IP addresses going to be?
lagniappe•35m ago
It's cloudflare, they type iddqd before every request.
dbbk•32m ago
Good luck trying to send emails during a LaLiga match I guess
ghoshbishakh•49m ago
Pricing:

$0.35 per 1,000 emails

Here are the limits:

"Your account may have daily sending limits based on Cloudflare's assessment of your account standing. "

Source: https://developers.cloudflare.com/email-service/platform/pri... https://developers.cloudflare.com/email-service/platform/lim...

TimCTRL•45m ago
> Everyone already has an email address

Things developers believe about email

freefaler•31m ago
A classic "the tragedy of the commons" with the SMTP protocol.

When the cost of spamming is near 0.00, all open platforms will be abused to the tilt. We have seen the email channel get less and less reliable with our own clients (password recovery, notifications and etc).

This might evolve into a couple of oligopolies (Microsoft 365 Outlook, Google Gmail, may be some legacy email providers like Yahoo) and if you want delivery you'd need to pay them, because they'd be the verifiers that you're not a spammer.

And these platforms will have a hell of time to fight the spammers that will create millions of email addresses and spam trough them.

ajsnigrutin•12m ago
I'd be happy if we at least started punishing the large, well known and established companies for spamming us...

...you know the one, where you have email preferences, and you only have "new messages" and "commercial offers" in the settings, and you uncheck the "commercial offers" and think you're sae. Then you get a spam email from them... check the preferences again, and there's a "new product notification" preference, checked by default, and you uncheck that too. Bam! another spam! "personalized offers" option appeared, check by default. "limited time offers". "value deals", etc.

Youden•9m ago
I don't think the protocol is necessarily the problem. For example we don't say the HTTP protocol is the problem when spammers abuse website comment forms or forums, we say it's the server on the other side.

I think the answer is somewhat the same as where we've gone with many HTTP servers: proof of work. Just like Captcha and more recently Cloudflare turnstile required you complete a task before you'd be able to access as website, senders should be required to complete a task before you'll accept their email.

It can even be a sliding scale: the higher you want the chances of the recipient seeing it to be, the more work you need to do.

However this also break emails considered "legitimate" by businesses, like marketing newsletters and other nonsense, which is why it'll likely never happen.

xhkkffbf•8m ago
I've gotten my email routed to spam even though it never left the Google cloud. They don't say, "Gosh, this is coming from inside the house. Therefore it's trustworthy." Nope. The push legit mail from other Google hosted domains into spam without a second thought.
ryangst_1•28m ago
$0.35 per 1,000 emails it's fair pricing.

Looks better than fixed $20 for Resend.

skc•19m ago
Yep, and I'm both a Cloudflare and Resend customer.

I like Resend, a lot, but this is probably something I can't pass up, especially if it does what it says on the tin

bdangubic•17m ago
Resend will change the pricing - guaranteed. Not sure how soon but I'd expect very soon.
qJaskkT•19m ago
Did anyone ask the poor people who unknowingly send mail to someone who feeds it to an AI surveillance company?

It would be interesting to send GDPR requests and have Cloudflare figure out all of the parties who got or use your mail.

nope1000•18m ago
It's funny. All the examples they show in the blogpost are just things that were already pretty easy without agents. Sending an email when the CI pipeline passes, when a support request is incoming, when an order is shipped. I think we haven't found a problem for this solution.
DASD•17m ago
Meanwhile, about to move all my domains(personal and business) e-mail from a provider to self-hosted using Stalwart Mail. I'll wait on the agents a while, thanks though.
btown•12m ago
https://developers.cloudflare.com/email-service/reference/po...

Cloudflare is very transparent about their prefixes and reverse DNS, which makes it trivial for operators who want to block the entire service, and extremely bad for Cloudflare's deliverability.

And while there are many open blacklists which I have no doubt Cloudflare monitors, there are many (including soft spam-classification signals) that are proprietary and difficult/impossible to monitor other than by watching rates of actual customer/prospect replies and engagement.

Amazon SQS has similar dynamics, and its reputation is far from stellar.

(If the Cloudflare team is reading this, and I'm missing an on-ramp to a company purchasing dedicated IPs with distinct PTR records, I do apologize! I'm not seeing documentation about this, though.)

daft_pink•7m ago
I’m really just curious how they guard against prompt injection. Otherwise this seems awesome.
yalogin•6m ago
Isn’t email already scriptable? What does cf provide that is different? I clicked on it assuming they are launching their own email service.

How to Outline Text (Badly, at First)

https://kellydornhaus.com/blog/font-outlines.html
1•furyofantares•55s ago•0 comments

Prt-Scan: AI-Powered GitHub Actions Supply Chain Attack

https://www.wiz.io/blog/six-accounts-one-actor-inside-the-prt-scan-supply-chain-campaign
1•speckx•1m ago•0 comments

Short Attention Span Theater

https://randsinrepose.com/archives/short-attention-span-theater/
1•mooreds•2m ago•0 comments

Bullet train upgrade brings 5G windows and noise-cancelling cabins to Japan

https://www.theregister.com/2026/04/16/jr_central_shinkansen_tech/
1•smurda•3m ago•0 comments

Saving Us from Ourselves?

https://leancrew.com/all-this/2026/03/saving-us-from-ourselves/
1•surprisetalk•4m ago•0 comments

Epicycles All the Way Down

https://www.strangeloopcanon.com/p/epicycles-all-the-way-down
1•surprisetalk•4m ago•0 comments

Synchronous Programming for Kids: A Manifesto [video]

https://www.youtube.com/watch?v=ESK695bHI5Q
1•surprisetalk•4m ago•0 comments

The Unix Executable as a Smalltalk Method [video]

https://www.youtube.com/watch?v=sZjPQ7vtLNA
1•surprisetalk•4m ago•0 comments

Dizzying Spiral Staircase with Single Guardrail Once Led to Top of Eiffel Tower

https://www.smithsonianmag.com/smart-news/a-dizzying-spiral-staircase-with-a-single-guardrail-onc...
1•bookofjoe•5m ago•0 comments

Ask HN: Why no insurance is fully transparent about how they handle each case?

1•julienreszka•5m ago•0 comments

Serious Weaknesses in the EU Age Verification App

https://twitter.com/intcyberdigest/status/2044762941019295772
1•gostsamo•6m ago•0 comments

DESI Completes Planned 3D Map of the Universe

https://newscenter.lbl.gov/2026/04/15/desi-completes-planned-3d-map-of-the-universe-and-continues...
1•ohjeez•7m ago•0 comments

What is audio visual entrainment? Science, benefits, and how it works

https://6th.tech/en/blog/audio-visual-entrainment
1•smanuel•7m ago•0 comments

Show HN: I built a free Mac app locker because AppLocker ($18) freezes Macs

https://github.com/dutkiewiczmaciej/MakLock
1•makmakapps•7m ago•0 comments

Making backwards- and forwards-compatible web programs (kbrecordzz)

http://kbrecordzz.com/2024/11/making-backwards--and-forwards-compatible-web-programs/
1•bollkalle•8m ago•0 comments

A Gentle Introduction to Mercury

https://bctnry.github.io/gentle-introduction-to-mercury/
2•PaulHoule•8m ago•1 comments

Cruise industry eyes nuclear to power a sustainable future

https://www.lr.org/en/knowledge/horizons/april-2026/cruise-industry-eyes-nuclear-to-power-a-susta...
1•mpweiher•9m ago•0 comments

Solve by Default

https://theengineersetlist.substack.com/p/solve-by-default
1•speckx•9m ago•0 comments

Warzone will be renamed to War.app

https://www.warzone.com/blog/index.php/2026/04/
2•wmlhwl•10m ago•0 comments

The Secret Art of Elicitation

https://www.generalist.com/p/confidential
1•jbredeche•11m ago•0 comments

Lead Full-Stack Engineer Marker Learning – Remote

1•lucie22sc32•11m ago•0 comments

Show HN: Yutu – A modern Lua linter written in Rust

https://github.com/0x2a-42/yutu
1•0x2a-42•12m ago•0 comments

How Missions Work

https://factory.ai/news/missions-architecture
1•gmays•12m ago•0 comments

Gemma 4-written, small cc0 encyclopedia of some core science content

https://stateofutopia.com/encyclopedia/
1•logicallee•12m ago•1 comments

It's the End of the Internet as We Know It

https://www.nytimes.com/2026/04/15/opinion/mythos-open-souce-internet.html
1•gpi•12m ago•1 comments

Tuta Drive launches in closed beta – post-quantum encrypted cloud storage

https://tuta.com/blog/tuta-drive-in-beta-launch
3•Cider9986•13m ago•0 comments

The founder box

https://anirudh.fi/founderbox
1•icy•14m ago•0 comments

An Arm Mainboard for the Framework Laptop

https://www.jeffgeerling.com/blog/2026/arm-mainboard-for-framework-laptop/
1•Brajeshwar•14m ago•0 comments

GeoGuessr for Code

https://getcomper.ai/blog/open-source-announcement
1•jtwaleson•16m ago•0 comments

Coding Agents Degrade Sandboxes to Security Theater

https://guardbase.io/blog/coding-agents-degrade-sandboxes-to-security-theater/
4•ronxjansen•16m ago•0 comments