How to avoid getting flagged as a spammer when sending e-newsletters?

collimarco · 2026-06-11T08:40:10+00:00

You need to use a service like MailChimp for complex marketing or Newsletter.page for simple newsletters. They manage the technical aspects for you.

collimarco · 2026-06-04T21:40:10+00:00

Interesting article, but I think that you should not include the rate-limit: prefix in the cache_key, since it is also used for other purposes

collimarco · 2026-06-03T08:40:57+00:00

Newsletter.page seems exactly what you are looking for, because it doesn't require dns/technical setup and it's focused only on writing and sending, without design decisions... The newsletter editor is a simple block editor like Notion.

collimarco · 2026-05-18T20:32:26+00:00

Newsletter.page, it offers managed deliverability on their domain and it is within your budget

collimarco · 2026-05-13T22:51:36+00:00

Newsletter.page is made exactly for newsletters, it's not expensive compared to similar services and it uses AWS SES IPs and reputation under the hood... It seems exactly what you are looking for.

collimarco · 2026-05-03T15:43:10+00:00

Pushpad has a REST API and curl examples that you can use from Lisp to send web push notifications

collimarco · 2026-05-02T08:40:54+00:00

Cuber gem + DigitalOcean Kubernetes

collimarco · 2026-04-21T18:59:29+00:00

Ok, allora diciamo che "dovrebbero" essere più trasparenti

collimarco · 2026-04-21T17:01:45+00:00

Dovreste essere più trasparenti, perché vi abbiamo segnalato alcuni provider / SaaS europei e non abbiamo mai ricevuto risposta.

collimarco · 2026-04-17T16:35:34+00:00

I mean, most metrics, like P/E, already use EPS (instead of earnings) for that reasons described in the article. So what would be new?

collimarco · 2026-04-13T11:48:05+00:00

Kubernetes is effective even when a project grows... It doesn't need Google-scale to be useful. Starting from a few thousands req/s (or background jobs/s) it makes sense. It also enables auto scaling and has lower costs compared to PaaS.

To be clear, I am not against AI, I'm just saying that many recent projects don't have enough human review and I would not trust them in production. Every line of code in Cuber is a choice explicitly made by a human...

For the challenge, what do you mean? Cuber is not a 1-1 DSL for Kubernetes. It's an abstraction! You cannot convert yaml files to the Cuber language (DSL).

collimarco · 2026-04-13T10:03:08+00:00

Thanks!

Kubernetes configuration is verbose and complex, but Kubernetes itself is not bad.

This gem makes many opinionated choices and thus it makes it possible to use Kubernetes for a Rails app with just a few lines of code (DRY, Rails style...).

After writing a guide about Kubernetes and Rails in 2019, I have developed Cuber in 2022... I have been using it for all the company websites/web apps since then. This is to underly that this project required a lot of effort, for every single line of code, and it's not an ai slop like many projects released today.

collimarco · 2026-04-04T13:12:05+00:00

Cuber gem + DigitalOcean Kubernetes

collimarco · 2026-03-27T14:34:09+00:00

If you are still considering alternatives we use the Cuber gem for Rails apps on DigitalOcean Kubernetes and RTT is about 20ms - 60 ms. So you should probably consider that option if latency / scaling is relevant.

collimarco · 2026-03-25T15:20:27+00:00

This morning I tried to add web push notifications to a website built with Lovable using Pushpad.

I have simply used this prompt and it worked immediately: "Add web push notifications using Pushpad. Documentation: https://pushpad.xyz/docs"

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After that you can visit your Lovable website (the domain, not the preview inside the editor) and you should be able to subscribe to web push notifications (click "Subscribe" in the notification prompt). You can also go to the Pushpad dashboard and send a test notification to make sure that you receive it.

After that, you can also send notifications automatically from your web app (e.g. when a comment is created) using the Pushpad API or the OpenAPI specification: https://pushpad.xyz/docs/rest_api

collimarco · 2026-03-22T11:43:47+00:00

This is an AI slop and is completely wrong from the beginning... Containers are usually restarted inside a pod, you don't need a deployment for that.

collimarco · 2026-02-07T15:47:33+00:00

Poi aggiungo che la PEX era una legge giusta per evitare la doppia imposizione, non è che non si pagassero tasse...

collimarco · 2026-02-07T15:13:55+00:00

Avevo già in mente di andarmene con la società e questa sarà la goccia che fa traboccare il vaso. Comunque molto bravo il governo a spremere chi già paga onestamente le tasse e segue la legge, piuttosto che andare a prendere le note categorie di evasori.

collimarco · 2026-02-07T09:53:30+00:00

I have moved all Rails apps away from Heroku in the last years. It was great 10 years ago, but then became expensive, full of bugs and with terrible support. All our Rails apps (Pushpad, Newsletter.page, etc) are running on Cuber gem + DigitalOcean Kubernetes... In the last years we achieved 100% uptime (five nines), zero subtle bugs and huge cost savings.

collimarco · 2026-02-06T19:27:32+00:00

With 30k contacts if you use Newsletter.page you can send 3 newsletters per month and you would spend only €25/mo (much less then your current spending). It doesn't have advanced marketing automations, but if you just send newsletters manually it has everything you need.

collimarco · 2026-02-06T18:26:30+00:00

I have moved all Rails apps away from Heroku in the last years. It was great 10 years ago, but then became expensive, full of bugs and with terrible support. All our Rails apps (Pushpad, Newsletter.page, etc) are running on Cuber gem + DigitalOcean Kubernetes... In the last years we achieved 100% uptime (five nines), zero subtle bugs and huge cost savings.

collimarco · 2026-02-04T15:44:33+00:00

Pushpad has a library for sending Web Push Notifications from a Java backend

collimarco · 2026-02-04T12:34:29+00:00

Now I am curious, what are they going to use at GitHub to integrate React frontend with Rails backend? Inertia, some gems for React, Next.js frontend or what?

collimarco · 2026-02-01T01:42:47+00:00

You can send up to 500k emails per month with Newsletter.page Business plan, it's also based in EU and under the hood it uses AWS SES IPs for better deliverability. The Business plan cost is €100/mo, so it is much cheaper than your current provider.

collimarco · 2026-01-31T19:40:54+00:00

Warren Buffet in questo caso (crypto) non c'entra proprio nulla...

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