Customer.io Blog
customer.io · Company blog · on HN since 2012
Customer.io's company blog on email and messaging automation, with posts on lifecycle emails, onboarding, deliverability and company news.
What HN saysHN commenters mostly mention it as a product to try for sending behavior-triggered messages, and it posts job openings; the patio11 lifecycle email guest post is its best-known piece.
44HN people shared it
17linked it in comments
46stories submitted
217story points
3 years agolast shared
2012people per year2026
Most-shared posts
- 1Customer.io - Email Automation powered by User Data10 people · 4 points · first shared 2012 · discussion on HN
- 2Concierge onboarding process to convert free to paying customers2 people · 5 points · first shared 2014 · discussion on HN
- 3Update to Compromised Email Addresses Incident2 people · 3 points · first shared 2022 · discussion on HN
- 4Intro to Lifecycle Emails - guest post by Patrick McKenzie (patio11)2 people · 3 points · first shared 2012 · 1 comments on HN
- 5Don't use noreply(at)yourdomain.com on emails2 people · 2 points · first shared 2012 · discussion on HN
- 6Bootstrapped2 people · first shared 2023
- 7Gmail loading images2 people · first shared 2016
- 8Careers2 people · first shared 2019
- 9How we built our HTML email editor using liquid, wysihtml5 and premailer1 people · 41 points · first shared 2012 · 9 comments on HN
- 10Customer.io Actions – Why did we do it this way?1 people · 18 points · first shared 2016 · discussion on HN
- 11Show HN: My first screencast. 2 hours spent for every minute of video1 people · 14 points · first shared 2012 · 2 comments on HN
- 12Lean Product Testing with Angular.js1 people · 13 points · first shared 2013 · discussion on HN
- 13Results are in: Teaser emails + blog posts. Are they worth doing?1 people · 12 points · first shared 2012 · 1 comments on HN
- 14Customer.io 2014 year in review – $1.5 MM ARR1 people · 10 points · first shared 2015 · discussion on HN
- 15Customer.io Extended Outage1 people · 9 points · first shared 2015 · 4 comments on HN
What HN people wrote when they linked it
k0 · 2013-11-24
Yeah, and many other companies. See: http://customer.io/ (funny how that is included in the poster's screenshot).
Most TOS state something to the effect of any data the visitor enters, types, or submits is fair game.
I don't think there is anything wrong with this approach and will likely use this type of solution to aid in conversions on my sites. With 40+ percent of users exiting half-way through a form I think this is good business. So long as the initial email includes an unsubscribe.
sudonim · 2012-12-13
Yup! We use Proxima-Nova. It's probably the next Helvetica Neue (i.e. hipster designers will be rolling their eyes at you soon).
One of the things that's great about it is there are so many variations: Regular, Light, Regular Italic, Light Italic, Semibold, Bold, Extrabold, Black, Semibold Italic, Bold Italic.
Most other sans-serif typefaces we evaluated didn't have enough variation that it could reliably service any use-case.
We use proxima-nova on http://customer.io as well as in all our presentations (e.g. https://speakerdeck.com/sudonim/write-emails-people-will-read ) . Love that typeface.
fooster · 2019-05-01
customer.io |SRE | REMOTE | https://customer.io
We're an automated messaging platform to send targeted emails, push notifications, and SMS to lower churn, create stronger relationships, and drive subscriptions.
Come join our team and help solve some of the truly hard problems that come from working with 1000's of customers receiving and sending billions of messages per month.
We're also looking for site reliability engineers to join team. We already have a stable platform with excellent monitoring. However, we have also have a strong desire to improve things! Our infrastructure is based around heavily sharded MySQL, redis, kafka and home grown message queues and the majority of our platform is written in golang. Please join and help make our backend systems more reliable and scalable.
We have superb benefits and a great team to join, instruct and learn from. We're a profitable stable company that is growing at a steady and healthy rate. See https://customer.io/careers/ for more details.
At Customer.io, we're committed to building a diverse environment and encourage applicants from underrepresented groups. We want people with different backgrounds from the team we have today to bring their perspective and thoughtfulness to the work that we do and the culture we foster.
If you are interested drop me a line at [email protected] and come join us!
mskierkowski · 2012-10-28
I have a love-hate relationship with data. Data is great for helping drive product, messaging, engagement, etc. However, most data ends up as noise. It's noise because it isn't actionable.
Ash Maurya wrote this great article on actionable metrics:
http://www.ashmaurya.com/2010/07/3-rules-to-actionable-metrics/
In the end I think it depends on how you want to use the data.
Here are a few things that I find useful:
- calculating your ROI on customers by correlating marketing efforts with key metrics. Google Analytics is good for this as you can basically identify the customer origin with a marketing campaign and how they convert for key metrics.
- full funnel perspective and cohort charts for AARRR metrics (http://500hats.typepad.com/500blogs/2007/09/startup-metrics.html). KISS Metrics and Mixpanel are great for this, but I still haven't found anything that does the Cohort diagrams that well.
- experimenting with messaging using A/B testing tools like Visual Web Optimizer (http://visualwebsiteoptimizer.com/) which has it's own analytics.
- retention email marketing is great with Customer.io (http://customer.io/) but I have fairly limited experience with that.
Other tools include Statsmix (which I think is under-represented); it is pretty good for collecting custom event data.
Once you have the money for it, tools like Pardot are great for marketing overall. We just implemented this so I still don't have much experience with it personally. It's a full marketing…
Jugurtha · 2022-01-12
As far as I know, PostHog uses ClickHouse, Redis, and Kafka among other things.
https://posthog.com/docs/self-host/architecture
From the use cases you're describing, you might want to check out https://customer.io
lzaf · 2020-07-01
Customer.io (https://customer.io) | Senior Site Reliability Engineer (SRE) | Portland Oregon | Full time | Remote
About us:
Our mission at Customer.io is to power automated communication that people like to receive. Today over 1,500 internet businesses use Customer.io to manage, send, and track performance of email, SMS, and push notifications. Unlike typical marketing platforms, Customer.io helps businesses increase relevance by using behavioral data: what people do or don’t do when logged in to a web or mobile app.
Role:
Senior Site Reliability Engineer (SRE)
https://boards.greenhouse.io/customerio/jobs/2226703
napoleond · 2015-11-11
That's not true, by either the letter of the law or the spirit of it. I own a business, and I post my email publicly because I want people to contact me. Some of those people will be selling me things--I want that! It's true that I end up with a lot of spam as a result, and that sucks, but it's better than never receiving unsolicited business email.
Sending unsolicited email to consumers is, indeed, spam. B2B is different.
EDIT: CANSPAM (US) is a bit ambiguous on this point. (Helpful blog post: http://customer.io/blog/Send-email-without-unsubscribe-link-cold.html.… CASL, its Canadian equivalent (I'm Canadian) is very clear on this point, though--unsolicited B2B to a publicly posted email address is a-ok, as long as it's not automated.
dangrossman · 2013-06-20
Build the in-app communication in-house; that's pretty simple. You can use Mixpanel to do a lot of the user tracking stuff for free.
If you just want a way to contact segments of your customers, and don't care that it happens outside your app, try http://customer.io/
bdunn · 2012-06-29
Actually, you can market before you've written a line of code. Ideally you've figured out some pain point that Instahero will solve, so why not pitch that? "X sucks, and we're doing something about it"
Write a sales letter. A great example can be found here: http://charmhq.com/ Start collecting email addresses, and send a lot of mail keeping everyone abreast of your progress.
Blog a lot, either with product updates or educational posts about all things analytics. Check out http://greatemailcopy.tumblr.com/ and http://customer.io/blog, both of which are helping promote a non-released product.
My network is pitiful, yet I was able to get 300+ emails on my announcement list before launching. And when I flipped the switch, about 1/3rd of the list signed up within a day.
KaoruAoiShiho · 2012-06-19
http://intercom.io
http://customer.io
Good luck.
L4zzy_0tt3r · 2023-10-03
Here's my current stack for our sales startup:
We split out cloud costs using the free tier for google cloud and aws. So all of us kind of pool our resources together so that we keep costs low across accounts.
https://cloud.google.com/free
https://aws.amazon.com/free
We're getting some stuff going with AI so we just use everything that's open source on huggingface:
https://huggingface.co/models
then the key thing is when we reach our for services that you would normally have to pay for we explicitly ask if they have a bootstrapped program. like we tell them we're bootstrapped and as what they can do for us:
We use this for customer outreach for example https://customer.io/startup-program/bootstrapped/
tiffanyh · 2022-06-09
Slightly OT: what library do people use as the frontend web GUI for workflow orchestration?
E.g. a drag’n drop web GUI workflow library like pictured below?
https://customer.io/wp-content/uploads/2021/06/use-case-onboarding.svg
lstamour · 2018-05-02
Well, no, custom web fonts generally aren’t supported by email clients, email within Gmail is sanitized by default.
And I stand slightly corrected: by customizing email image URLs, you can apparently track the first open, but not user details (IP address, device, subsequent opens, etc.) https://customer.io/blog/gmail-loading-images.html
jermaustin1 · 2016-09-02
This my be true now, but when I was working and doing the marketing for my products, it reported accurately. I'm pretty sure it still does honestly.
According to Customer.io, the change was to make images load by default, not requiring the end user to click Show Images. Thus making the open rates more accurate.
https://customer.io/blog/gmail-loading-images.html
wikwocket · 2012-10-18
If anyone wants a good primer for a "top 4 lifecycle emails to send," I found patio11's post on the customer.io blog to be very helpful: http://customer.io/blog/What-are-Lifecycle-emails-patio11-patrick-mcke…
citruspi · 2012-10-15
I haven't conducted any testing, but I've read several articles which said not to use noreply. In addition, as a customer, when I receive an email from a 'non noreply', I feel better and I feel that they're there to help. Look at:
- http://customer.io/blog/dont-use-noreply-on-emails.html
- http://blog.cakemail.com/why-you-should-never-use-a-noreply/
I think this is the link ljf was looking for:
http://news.ycombinator.com/item?id=4558433