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Postcard is now open source

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122 points philip1209 | 9 comments | 03 Jul 25 16:38 UTC | HN request time: 1.26s | source | bottom
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nanna ◴[03 Jul 25 21:10 UTC] No.44459230[source]▶
This looks great but delivery via Amazon SES is a problem. I'm an academic and I tried to set up a work newsletter like this with Listmonk recently, but SES rejected my request to relieve me of sandbox mode for unspecified 'security reasons'. Everything was set up properly, it was under a domain under my personal name, I gave links to my profile page on my university website, ample explanation about what I would do with it (one email ever few months), that I would be the only sender, but they rejected it. So in the end I've opted for a hosted solution... anyone else had similar issues?
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1. philip1209 ◴[03 Jul 25 21:13 UTC] No.44459246[source]▶
Postcard originally used Postmark. But, Postmark deliverability has been decreasing. And, for the open-source version, I wanted to simplify dependencies. So, I moved it to SES. It works for small lists, but won't scale to massive ones.

I welcome PRs to add additional sending providers - it wouldn't be onerous.

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2. keysdev ◴[03 Jul 25 21:43 UTC] No.44459427[source]▶
Would be nice to have just send using sendmail or what ever smtp server we chose. This is HN, and some of us have already done ip warming and to avoid any big players, as they all drop/block emails without telling their users and are not be trusted for reliable communication.
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3. pirsquare ◴[03 Jul 25 22:18 UTC] No.44459617[source]▶
postmark is a garbage now. This is coming from a previous postmark advocate and moved to SES.

SES is terrible in the past but now it is at least on-par if not better than postmark.

Only issue with SES is setup can be tedious.

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4. Nextgrid ◴[03 Jul 25 23:31 UTC] No.44459983[source]▶
SMTP is a must. My advice is to never bother with proprietary mailer APIs - you will need to change providers sooner or later (sometimes on short notice, if your current provider temporarily suspended you on a false positive for example), which is much easier when you just need to swap the SMTP credentials vs implementing yet another proprietary API. Plus it makes local testing easier - there's no shortage of "fake SMTP for development" projects out there.

Of course, tech bros don't want you to do it, as it reduces their vendor lock-in.

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5. philip1209 ◴[03 Jul 25 23:41 UTC] No.44460029{3}[source]▶
That's fair, I can add smtp config.

Really I was just concerned about configuration overload from too many options. Seems like SMTP is worth splitting out, though.

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6. Nextgrid ◴[03 Jul 25 23:43 UTC] No.44460038{4}[source]▶
I think SMTP is the way to go unless you're actually using specific proprietary mailer API features and there's no way to do the same via SMTP.

Solution is:

* SMTP by default

* if you want, some setup examples of using third-party mail services using their SMTP endpoint (most offer one)

Again you don't have to, it's an open-source project and you owe nothing to anyone. But if you fancy doing it, this is the way to go and will save headaches later.

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7. toomuchtodo ◴[04 Jul 25 00:40 UTC] No.44460279[source]▶
What provider doesn’t suck in this space?
8. cornfieldlabs ◴[04 Jul 25 02:36 UTC] No.44460690[source]▶
Just 4 years ago, I was recommending Postmark to everyone who faced deliverability issues with sendgrid.

Who's the relatively better provider now?

Edit: A useful article about IP Warm up https://blog.healthchecks.io/2023/08/notes-on-self-hosted-tr...

9. keysdev ◴[04 Jul 25 20:05 UTC] No.44467467{5}[source]▶
And just remember the more HAM you send out to different domains and not SPAM, the better the IP gets overtime. And then BAM you got your own little self hosted poormans mailchimp.