The email deliverability space is crowded. Tools promise warm-up automation, inbox placement, and better sender scores.
But which ones do actually work?
Folderly is one of the most talked-about platforms in this space, so we took a closer look. We sifted through reviews from G2, Capterra, Reddit, and beyond to understand how it really performs.
This post breaks down what users are saying. Where Folderly stands out, where it falls short, and what to keep in mind if you’re considering using it.
Folderly calls itself an AI-powered email deliverability platform. It’s not just for warm-up, but also included: diagnostics, spam fix support, domain audits, consulting, and monitoring.
And to their credit, the product delivers on many of those promises.
But when you read between the lines of reviews on G2, Capterra, and Reddit, some consistent themes show up, both good and bad.
Folderly digs deep into your domain infrastructure, including SPF, DKIM, DMARC, PTR, and more. Their reports help users identify misconfigurations fast.
Some people highlight responsive help from Folderly’s deliverability consultants, particularly on premium plans. If you’re newer to the game, this can be useful.
The platform gives you warm-up tools and human support, so you’re not left guessing. It’s structured to be hands-off if you want it to be.
Folderly doesn’t publish pricing. You’ll need to talk to sales, and reviewers say quotes can climb quickly depending on your inbox count or use case.
You can’t deeply customize warm-up logic or send behavior. For operators who want full control, speeds, templates, scheduling, inbox-level logic, Folderly may feel too rigid.
Users in cold email forums often ask: How authentic is Folderly’s engagement network? There’s no public insight into inbox pool quality or how behavior is monitored, which makes it hard to assess what mailbox providers are actually seeing.
Folderly works best if you:
But if you’re scaling outbound, running dozens of inboxes, or building a product that relies on predictable deliverability?
That’s where teams often go looking for something more hands-on, and land on Mailivery.
Mailivery gives you complete access to warm-up, deliverability testing, inbox monitoring, and API-level control, all without inflated pricing or black-box logic.
Folderly’s pricing grows with your usage. Mailivery’s doesn’t.
You get unlimited inboxes under your plan, priced by total daily warm-up volume, not how many seats or domains you add.
This model works especially well for:
And for SaaS integrations, mailbox-based pricing is available too.
Mailivery isn’t trying to upsell you on “premium features.” Every plan includes the full toolkit:
Mailivery makes sure your entire sending setup is healthy.
Warm-up networks are easy to fake. Mailivery’s isn’t.
The result: warm-up that trains mailbox providers to trust you, because it looks and behaves like a real conversation.
Mailivery’s API isn’t an afterthought. It’s a core part of the product.
This is why Mailivery is often chosen by platforms building deliverability into their product. it works at a system level, not just a UI level.
Folderly’s support is solid, if you’re on the right plan.
But Mailivery’s support is founder-led and directly tied to product development. Feedback from users turns into features. Edge cases don’t get closed, they get solved.
Whether you’re managing 10 inboxes or 1,000, the team behind Mailivery treats your problem like it’s theirs.
Folderly offers a solid service, especially if you want a consultative experience. But when inbox placement is mission-critical, Mailivery’s flexibility and transparency give it the edge.
Folderly reviews show a clear pattern:
The good? Useful diagnostics, helpful support, decent UI. The negative? Limited transparency and growing costs.
Folderly works for some teams. But if you want to build cold email into a long-term growth engine, you need infrastructure that gives you:
Mailivery is that infrastructure.
Whether you're running outbound for clients, scaling a SaaS platform, or launching a new sales motion, Mailivery gives you the system, not just the stats.
📌 Try Mailivery free for 7 days
The easiest way to get responses to your cold emails.
