Mailwarm 2.0 - The email warmup tool, upgraded for deliverability.
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Most founders rely on email to grow, but emails don’t land in the inbox by magic. Mailwarm 2.0 is the premium email warmup and deliverability system built to give your emails the best chance of reaching the inbox. It combines automated warmup, real engagement, monitoring, infrastructure checks, and experts call available for every subscriber.
Replies
Mailwarm
Hi Product Hunt 👋
Mailwarm 2.0 was interesting because email deliverability looks simple from the outside, but technically there are a lot of moving parts behind it.
Warmup activity, inbox interactions, sending behavior, domain setup, reputation signals, monitoring… everything needs to work together if you want the system to be useful and reliable.
From a dev perspective, the challenge was not just to automate email warmup, but to make the whole process easier to track, understand, and act on.
A lot of deliverability problems are invisible until performance starts dropping, so we focused on building something that helps teams see issues earlier and avoid guessing.
Excited to launch Mailwarm today and hear what people think.
The landing page look is pristine. Quick question on the "infrastructure checks"does the tool actively monitor for configuration drift (like if a teammate accidentally messes up the SPF/DKIM records downstream), or is it just an onboarding check? good job team
Mailwarm
Hi everyone 😁
Email deliverability is usually something people notice only when results start dropping, and it’s not a good thing as this negativity affects your campaigns.
That’s exactly why we worked on Mailwarm, to help teams warm up their inboxes properly, keep track of what’s happening, and understand what needs to be fixed before deliverability becomes a bigger problem.
We are excited to launch this today, and we are also curious to know how the Product Hunt community is handling email deliverability.
Integuru
Congrats on the launch!
Mailwarm
@richardzhang Thank you for the support !
Mailwarm
@richardzhang Thanks, I made a quick check for your domain, happy to share with you some quick wins .
Ormedo
@othman_katim congratulations on the launch 🙌, this is a big problem you're tackling as email rules have become way stricter with the new wave of agents!
I'm curious how long does it usually take to warm up, and what's the reasoning behind the default numbers? (did you test on different ones before settling on those?)
Mailwarm
@skander_karoui Usually 4-6 weeks from a cold start, faster if there's an existing reputation. The defaults come from patterns across +19000 customers. We tested steeper and flatter curves early; both underperformed the current model. Are you warming a fresh IP or one with sending history?
Flowlu
Cool! Crush it! Let's do an integration with Flowlu.com
Mailwarm
@gb1010 Done!
We use a similar service. How many warm-up accounts do you have, and how often are they rotated? Because if, for example, the warm-up is done using the same 100 mailboxes over and over, it will lose its effectiveness after a month.
Mailwarm
@natalia_iankovych You're right, small networks kill the warm-up positive effect; we operate +50 000 across the major providers, and they rotate daily.
Mailwarm
@natalia_iankovych To be honest, I am happy and proud to write this answer.
And you’re 100% right. If warmup runs on the same small pool of inboxes over and over, it quickly becomes repetitive and loses value.
Mailwarm runs on a network of 50,000+ real and aged inboxes (by the way, mailwarm exist since 2020). The goal is not just to “send warmup emails,” but to create diverse, positive inbox interactions across providers, with enough rotation, email provider mix, and engagement behavior to support sender reputation over time.
That’s also why we built Mailwarm 2.0 beyond basic warmup: monitoring, infrastructure checks, provider visibility, and expert review. We want teams to know if their reputation is actually improving, not just see activity running in the background.
Are you mainly using warmup for cold outreach or for a larger email marketing setup?
@thamibenjelloun Cold personalized outreach campaigns.
Congrats.
Just a question, does it work for cold outreach domains or mainly for newsletters?
Mailwarm
@felixlandicho Thanks! 😊
Mailwarm works for both cold outreach and newsletters. We support B2B and B2C use cases, so whether you're sending sales emails, outbound campaigns, or newsletter content, the goal is the same: helping you build and maintain a healthy sender reputation for better inbox placement.
Just to be sure, what's your primary use case right now cold outreach, newsletters, or a mix of both?
Mailwarm
@felixlandicho It applies to all the email senders that consider this channel seriously to generate revenue and deliver a great customer experience
How much time we need to wait for warm up to complete before starting email campaign. Is this fully automated?
Mailwarm
@mavelstech Usually 3-4 weeks for noticeable improvement, depending on your starting reputation. The platform is fully automated, and the setup takes you literally 2 minutes.
Mailwarm
@mavelstech I wouldn’t think of warmup as something that “finishes” once and then you forget about it. The timeline depends on your domain age, past sending activity, current reputation, provider, and the volume you want to reach.
For a new domain, I’d start with warmup first, then add campaigns progressively while watching inbox placement and spam signals.
Mailwarm automates the warmup itself, but Mailwarm 2.0 also adds monitoring and access to our deliverability team when you need help adjusting the strategy.
Are you preparing a brand-new domain or already sending from this inbox today?
Mailwarm
Hi Product Hunt Community!
I’m Naim, and I handle the technical account management side of things at Mailwarm. If there’s one thing I’ve learned the hard way, it’s this: when your emails start hitting spam, it’s almost never for just one reason.
It’s a ghost in the machine. Maybe a DNS record is slightly off. Maybe a sudden spike in sending volume triggered a filter. Or worse ... your domain reputation has been quietly tanking for weeks, and you only notice when your reply rates hit zero. It is incredibly painful to waste days tweaking random settings in the dark, hoping something works.
That frustration right there is why Mailwarm was built.
The goal is to turn the black box of email deliverability into a transparent dashboard. Mailwarm helps you safely warm up your sender reputation, track the right technical signals, spot infrastructure issues early, and understand exactly what needs attention.
Cold outreach and email marketing are still unmatched growth channels but only if your audience actually sees what you send...
We are back with Mailwarm 2.0 🤘🏻! We’d love your support, your feedback, and for any email questions just drop them in the comments below :))