AgentMail
Infrastructure
email infrastructure api
SHOW HN2025
121points
70comments
#622of 3,837 in 2025
Top 17%of 2025 by points
How HN took it
CuriousMostly questions and neutral comments
10 positive, 24 neutral or asking, 0 mixed, 10 critical, out of 44 comments about the project. Thread score -0.06.
Idea: 5 for, 3 againstPrivacy: 0 for, 3 againstDesign: 1 for, 1 againstPricing: 0 for, 1 againstPerformance: 0 for, 1 against
The thread, comment by comment
Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.
positive neutral or mixed critical about another commenter or something else the maker
What HN said
What people liked
Dashboard SDK example popovers are a strong UI idea
From 1 comment
This is really interesting and I'm sure it has many useful applications - what I am most impressed by is the popovers in your dashboard, which show SDK examples. This is a…
primitivesuave on HN
Email is a universal, durable channel worth building on
From 2 comments
This. I also think e-mail clients are a more natural interface for managing multiple async conversations/tasks with models/agents from different providers. There's also nothing…
farco12 on HNGreat question - we get this input a lot. It really depends, while I'm a big believer of voice and API-driven design in the future, I think email's role remains but looks…
adisingh13 on HN
Objections
Spam and abuse at scale could be a serious problem
From 3 comments
Imagine the amount of spam this generates
DalasNoin on HNWith this type of products, I feel like spamming nuisance will dramatically increase if mitigation doesn’t catch up
mayas_ on HNLet me know how long that’ll last. The low limits of other providers are there for a reason. That reason’s called spam.
AndroTux on HN
Pricing is steep for early-stage startups
From 1 comment
This is perfect timing for me - was just thinking about how to do this. But pricing is a bit steep for a startup currently looking to prove the market. Would you consider a…
sauwan on HN
Postmark and SES can already cover much of this
From 3 comments
Was thinking of building something similar, considering just using yours now, looks great! Postmark just made an open-source MCP server. I am using postmark already. Why would I…
christoph123 on HNDejavu What is the benefit of an AI email infra over using any other generic email api provider like SES, azure communication, sendgrid, mailchimp
TZubiri on HNYou can do this with SES on AWS or Mailgun. We use SES for this exact use case. Giving agents programmatic access to an email inbox and programmatically creating inboxes.
statictype on HN
Requests
Cheaper or free tier for early users
From 2 comments
This is perfect timing for me - was just thinking about how to do this. But pricing is a bit steep for a startup currently looking to prove the market. Would you consider a…
sauwan on HNThanks for the input sauwan - it means a lot. We're early, so this is by design. We have a generous free tier coming soon! For now you can also use our playground at…
adisingh13 on HN
Clearer onboarding and next steps
From 1 comment
Onboarding/signup started off great, but then you just drop in with no clarity on what to do next. A lot of actions possible and I'm unsure what to do first.
hajrice on HN
Framework integrations for agent frameworks
From 1 comment
Curious: how are you tackling abuse/spam at scale, especially as more agents start talking to each other? Also, any plans for plug-and-play integrations with popular agent…
sneurgaonkar on HN
Questions
How are spam and abuse handled
From 2 comments
Curious: how are you tackling abuse/spam at scale, especially as more agents start talking to each other? Also, any plans for plug-and-play integrations with popular agent…
sneurgaonkar on HNThanks a lot! We're working on a lot of checks in place within our API for both the agents and email side, including things like spam filtering, verification, and protection…
adisingh13 on HN
What safeguards exist against prompt injection and phishing
From 1 comment
What safeguards against prompt injection or phishing does AgentMail offer?
psilambda on HN
How domains are handled
From 1 comment
Do you facilitate the domain registration or do users bring their own? And if you do facilitate it, do you retain ownership of it?
bearcobra on HN
Alternatives named
Gmail with Pub/Sub
From 1 comment
Keep in mind that default Gmail allows webhooks for any changes (email received but also changing labels, etc), for free using Gmail pubsub. I use it a lot because it's the only…
loremm on HN
AWS SES, Mailgun, Sendgrid, Postmark
From 3 comments
You can do this with SES on AWS or Mailgun. We use SES for this exact use case. Giving agents programmatic access to an email inbox and programmatically creating inboxes.
statictype on HNYes it does. As far as I recall, all major email providers handle inbound email. Sendgrid, Postmark, Mailgun, SparkPost, AWS SES. (I don’t think this compromises the value of…
abxyz on HNWas thinking of building something similar, considering just using yours now, looks great! Postmark just made an open-source MCP server. I am using postmark already. Why would I…
christoph123 on HN