Matt Novak | PostmasterOPS

Founder of PostmasterOPS. Dedicated SMTP infrastructure and managed warmup for compliant, high-volume Gmail senders.

[Matt Novak | PostmasterOPS @mattnovakemail]

Mainstream ESPs aren’t built for every lawful sender. That’s why I built PostmasterOPS.

• Dedicated domain + IP per slot
• Managed warmup: 50K–100K/day
• Up to 100K Gmail sends/day

Request a fit assessment:
https://t.co/1swNrVBmQ1

[Matt Novak | PostmasterOPS @mattnovakemail]

You can't infrastructure your way out of a bad audience. People obsess over IPs and subject lines, then send the same garbage list through new infrastructure and wonder why it's ruined. Recipients are part of your reputation.

[Matt Novak | PostmasterOPS @mattnovakemail]

DKIM gives you a persistent identity that follows your traffic across IPs. Gmail requires at least 1024-bit keys, recommends 2048. But don't just publish the record - send, check headers, verify it actually passes.

[Matt Novak | PostmasterOPS @mattnovakemail]

Your SMTP server introduces itself with HELO/EHLO. A generic VPS hostname or localhost-style name doesn't look professional. From the first SMTP command, professional infrastructure should look professional.

[Matt Novak | PostmasterOPS @mattnovakemail]

There is no single "your reputation." Modern filtering evaluates IP, domain, DKIM domain, tracking domain, content domains, traffic patterns, engagement, complaints, and more. Change an IP and you're still the same ecosystem.

[Matt Novak | PostmasterOPS @mattnovakemail]

This is completely off-topic, but I was going through a bit of burnout, kinda feel blah. I started taking zinc and noticed a huge difference after a few days. Even sleeping better too.

[Matt Novak | PostmasterOPS @mattnovakemail]

TLS is not optional for serious bulk email. Gmail requires TLS for bulk senders and can reject non-compliant traffic. If you haven't checked your TLS config, that may be exactly why you're getting temp-failed.

[Matt Novak | PostmasterOPS @mattnovakemail]

Israel is the #1 in the world for daily AI adoption and intensity per capita. It's also home to over 2,000 to 2,300 active AI startups. The USA has around 1,800 AI startups. Not to mention Israeli institutional investors recently poured over $1.03 billion into US artificial intelligence infrastructure. So, I think the real question is, China or Israel.

[Matt Novak | PostmasterOPS @mattnovakemail]

@heyizmadz Following you for inspiration. I LOVE reading stories like yours. Perseverance and ultimately success.

[Matt Novak | PostmasterOPS @mattnovakemail]

I'd build some sort of directory+newsletter geared towards all the people on X that are obsessed with growing their X account (the ones that post all day long about growth and only talk about growth, nothing else). I'd DM them, telling them that I have an exclusive slot available for them on my directory. They'd click a link and it would collect their email during the signup. I'd give them a shout-out on X, then I'd make the first comment the link to their profile on my directory. In a perfect world, they follow me on X AND I now have their email for newsletters. There's a billion "grow me on X" products that you could market them on. In time, come up with your own "grown me on X" ai-slop app, just like all of the others, and start charging a subscription. Sadly, that's probably the BEST app that could be completely monetized on X with $0 marketing budget and you'd actually get far with it.

[Matt Novak | PostmasterOPS @mattnovakemail]

Stop thinking of sender reputation like a credit score. It's a constantly changing profile based on data, complaints, authentication, links, blocklists, IP, and engagement. Receivers are building a living picture, not a number.

[Matt Novak | PostmasterOPS @mattnovakemail]

Authentication creates identity. Reputation is trust. Identity lets receivers hold you accountable for what you send. Trust is earned by sending what people want. Don't confuse the two.

[Matt Novak | PostmasterOPS @mattnovakemail]

@charlesordo what did you post that went viral? i hope it wasn't a post about growth...

seriously though, what were the posts? would love to know what type of content does well here on x.

[Matt Novak | PostmasterOPS @mattnovakemail]

@markproduct Depends on your target audience. Mailers aren't hanging around on X.

[Matt Novak | PostmasterOPS @mattnovakemail]

@JonnAllard 32 million emails sent last month on my own campaigns. I'm rolling out optimization updates to get those numbers up this month. Deliverability is hanging around 90-99% average of around 95%.

[Matt Novak | PostmasterOPS @mattnovakemail]

Changing your IP doesn't reset your reputation. Filters evaluate your IP range, domains, DKIM signing domain, tracking domain, sending platform, audience, and history. A new IP with the same bad ecosystem is just a new IP.

[Matt Novak | PostmasterOPS @mattnovakemail]

@Isaac_Dev0 It builds vanity metrics, much like the people that only post about growth in X. Keep adding real value, even if nobody seems to be answering.

[Matt Novak | PostmasterOPS @mattnovakemail]

"My deliverability is 98%" usually means 98% accepted. Not 98% inbox. A 250 response can land straight in spam. Two different problems: bounces vs classification. Know which one you have.

[Matt Novak | PostmasterOPS @mattnovakemail]

I honestly don’t understand the value of X. I can’t even find affiliate mailers on this platform. Yet I have many connections and conversations with them on LinkedIn. Even Reddit massively outperforms X. Perhaps I should have gone into the “grow your x account” sass business, it seems to be the only thing people care about on here.

[Matt Novak | PostmasterOPS @mattnovakemail]

DMARC is about alignment: your From domain must match what SPF/DKIM authenticated. Even p=none is allowed for Gmail bulk. But DMARC reports reveal who's really sending for you - sometimes systems you forgot existed.

[Matt Novak | PostmasterOPS @mattnovakemail]

One-click unsubscribe is not "put the word at the bottom." It's RFC-compliant List-Unsubscribe headers. Gmail requires it for bulk marketing. Get the infrastructure right or risk filtering.