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If you've been looking at email warmup tools, you've probably come across MailReach. It's one of the more popular names in the space, and for good reason. The spam testing feature is solid, the dashboard is clean, and support actually responds when you reach out. For a single B2B inbox at $25/month, it gets the job done.
But the cracks show up fast once you scale past a couple of inboxes. At 10 mailboxes you're paying $195/month. At 20, it's $390/month. And that's just for warmup. MailReach doesn't bundle email verification, monitors fewer blacklists than we'd like, doesn't support B2C warmup, and doesn't offer a free trial for its warmup engine. The network tops out around 20,000 inboxes, which limits the diversity of engagement signals your mailbox gets during warmup.
At Mailivery, we built the pricing around daily warmup volume instead of per-inbox charges. Connect as many mailboxes as you want, starting at $29/month, with a 100,000+ mailbox network and every deliverability tool included. This post breaks down exactly how both tools compare so you can decide which one fits your setup.
Even at 1-3 inboxes, Mailivery gives you more for roughly the same price. MailReach charges $25/month per inbox and doesn't include email verification, monitors fewer blacklists, offers no B2C warmup, and has no free trial. Mailivery's Starters plan at $29/month includes all of that plus a 7-day free trial to test before you commit.
The gap only widens from there. If you're running 5+ inboxes, want unlimited mailbox connections, need B2B and B2C warmup, or you're an agency managing client accounts, Mailivery is the clear pick. You'll pay a fraction of what MailReach costs at scale, connect to a warmup network that's 5x larger, and get blacklist monitoring, email verification, and inbox placement testing bundled in without paying extra.
Credit where it's due. MailReach has strengths that have earned it a loyal user base. If you're wondering "is MailReach legit," the short answer is yes. It's a legitimate warmup tool with thousands of active users.
Their warmup network uses real business inboxes across Google Workspace and Microsoft 365. MailReach also includes inbox placement testing (what they call "spam testing"), where you send a test email and see a report showing where it landed across providers. Most standalone warmup tools don't include this.
The dashboard is clean, with a deliverability score (0-100), warmup progress tracking, and domain health checks for SPF, DKIM, DMARC, and blacklist status. Customer support also gets consistently positive mentions across G2, Capterra, and Reddit.
The biggest issue with MailReach comes down to pricing at scale, but there are other gaps that matter too.
MailReach charges per inbox. The Starter tier is $25/month per mailbox (1-5 inboxes). At 6-20 inboxes, the cost drops to $19.50 per inbox. Above 20, it drops further. But even with volume discounts, the math gets painful quickly.
Here's what that looks like in practice: warming 10 inboxes costs roughly $195/month. Warming 20 inboxes costs around $390/month. If you're an agency managing 50 client inboxes, you're looking at well over $750/month just for warmup. That's a significant line item before your team has sent a single outreach email.
Smaller warmup network. MailReach operates a network of around 20,000 inboxes. That's not tiny, but it limits the diversity of engagement signals your mailbox receives during warmup. When inbox providers like Gmail and Outlook evaluate your sender reputation, they look at who's interacting with your emails and how varied those interactions are. A smaller network means more repetitive patterns, which can reduce the quality of the reputation signals being built.
No free trial for warmup. MailReach lets you run a few free spam tests, but there's no way to trial the actual warmup engine before committing. You're buying blind, which is frustrating when the tool starts at $25/month per inbox.
B2B only. MailReach is built specifically for B2B cold outreach. If you're an e-commerce brand, a newsletter sender, or anyone doing B2C email warmup, MailReach isn't designed for your use case.
Spam test accuracy concerns. Multiple user reviews on G2 and Reddit mention that MailReach's spam test scores don't always match real-world campaign performance. Some users report seeing perfect deliverability scores inside MailReach while their actual open rates stay low.
Limited feature bundling. MailReach focuses on warmup and spam testing. Email verification and other deliverability tools require separate subscriptions or third-party integrations.
Mailivery takes a different approach to warmup, and the differences go beyond just pricing.
A warmup network built for quality signals. Mailivery's peer-to-peer network includes over 100,000 active mailboxes, 5x the size of MailReach's. But size alone isn't the point. What matters is diversity. Mailivery's network includes a mix of big brands, seed mailboxes, CRM users, cold emailers, and dedicated warmup inboxes. When your email gets opened, replied to, and moved out of spam by this range of senders, inbox providers see a natural engagement pattern. That's what builds real reputation, not just volume from a smaller pool of similar accounts. A network this large also means your warmup interactions are less likely to repeat with the same inboxes, which keeps the engagement signals fresh and credible over time.
Flat pricing with unlimited mailboxes. Instead of charging per inbox, Mailivery charges by daily warmup volume. The Starters plan ($29/month) gives you 200 warmup emails per day, the Professional plan ($79/month) gives you 800 per day, and the Business plan ($199/month) gives you 2,500 per day. On every plan, you can connect unlimited mailboxes and split the volume however you want across them. Warming 10 inboxes costs the same as warming 3, as long as you have enough daily volume to cover them.
Every deliverability tool in one platform. Every Mailivery plan includes the full feature set with no feature gating. Blacklist monitoring across 70+ lists, email verification credits, inbox placement testing, full REST API access, and team management are all available on every plan, including Starters. There's no need to pay for separate verification tools or third-party blacklist checkers.
Trusted by agencies and SaaS platforms. Mailivery powers leading email infrastructure platforms and is trusted by agencies and SaaS companies to handle warmup at scale. The full REST API on every plan makes it straightforward to integrate Mailivery into existing platforms, white-label setups, or multi-client workflows. When your business depends on email deliverability across hundreds of client accounts, you need a warmup layer that can keep up without pricing you out.
B2B and B2C warmup. Mailivery supports both B2B and B2C warmup. If you're warming inboxes for an e-commerce brand, a newsletter, or a transactional email setup alongside your cold outreach accounts, Mailivery handles both without needing a separate tool.
The Starters plan comes with a free 7-day trial, so you can test the platform before committing.
Here's how the two tools stack up across the features that matter most for email warmup:
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Feature data sourced from each tool's official website and documentation as of April 2026.
This is where the comparison gets concrete. Below is a side-by-side look at what each tool costs as you add more inboxes.
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How we calculated Mailivery's plan mapping: We used a rough guideline of 30-50 warmup emails per inbox per day. Five inboxes at 40 emails each = 200 warmup emails/day, which fits the Starters plan. Ten to twenty inboxes fit comfortably within the Professional plan's 800 emails/day. Fifty inboxes need the Business plan's 2,500 emails/day capacity. MailReach pricing is based on their published rates: $25/inbox (1-5), $19.50/inbox (6-20), with additional discounts above 20.
At 1 inbox, MailReach is $4/month cheaper on the sticker price. But Mailivery includes email verification, 70+ blacklist monitoring, B2C warmup support, and a free trial at that price point. By the time you hit 5 inboxes, you're saving over $1,100/year with Mailivery. At 20 inboxes, the gap is nearly $4,000/year. And at 50 inboxes, the savings exceed $6,600 annually.
For a more detailed look at how email warmup tools compare on pricing, check our full roundup where we break down 11 tools at different inbox counts.
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MailReach might work if:
You're a solopreneur running a single inbox for B2B cold outreach, you don't need email verification or B2C support, and you're okay committing without a free trial. For that narrow use case, MailReach is a functional tool.
Mailivery is the better fit if:
You want more features for similar or lower cost, even at 1 inbox. You're an agency managing warmup for multiple clients. You need B2C warmup support. You want email verification, inbox placement testing, and 70+ blacklist monitoring in one tool. You want access to a 100,000+ mailbox warmup network instead of 20,000. Or you're a SaaS platform that needs API-level warmup integration. Mailivery handles all of these on a single flat-rate plan.
Check out our deep dive into MailReach reviews from real users for more detail on what people like and dislike about the platform.
MailReach works for very small setups (1-2 inboxes, B2B only). But even at that scale, Mailivery offers more features for $4/month more, including email verification, 70+ blacklist monitoring, a 5x larger warmup network, and a free trial. Once you scale past 3 inboxes, Mailivery becomes significantly cheaper too.
MailReach charges $25/month per inbox for 1-5 inboxes, $19.50/inbox for 6-20 inboxes, and lower rates for 20+. So 10 inboxes costs roughly $195/month, and 20 inboxes costs around $390/month. Mailivery covers 20 inboxes for $79/month on its Professional plan.
MailReach does not offer a free trial for its warmup feature. You can run a few free spam tests every 24 hours, but you can't test the actual warmup engine without paying. Mailivery offers a 7-day free trial on its Starters plan so you can evaluate the warmup before committing.
No. MailReach is designed specifically for B2B cold outreach. If you need to warm up inboxes for B2C campaigns, e-commerce sends, or newsletters, MailReach is not built for that use case. Mailivery supports both B2B and B2C warmup on all plans.
Mailivery is the strongest MailReach alternative for agencies because of its unlimited mailbox connections at a flat monthly rate and its 100,000+ mailbox warmup network. Agencies managing 20-50+ client inboxes save thousands per year compared to MailReach's per-inbox model. Every plan also includes API access, which is why leading agencies and SaaS platforms trust Mailivery to power their email infrastructure.
Mailivery uses volume-based pricing ($29-$199/month) with unlimited mailbox connections, while MailReach charges per inbox ($25/inbox/month). Even at 1 inbox, Mailivery bundles more value. At 5+ inboxes, Mailivery becomes significantly more affordable. At 20 inboxes, Mailivery costs $79/month versus MailReach's ~$390/month.
MailReach has a clean interface and decent spam testing, but Mailivery wins on nearly every other comparison point: a 5x larger warmup network (100,000+ vs 20,000+), unlimited mailboxes at flat pricing, bundled email verification and 70+ blacklist monitoring, B2B and B2C support, a free trial, and API access trusted by agencies and SaaS platforms. MailReach's only advantage is a $4/month lower price at the single-inbox level.
Yes, MailReach works with Outlook and Microsoft 365 accounts through SMTP connections. Their warmup network includes both Google Workspace and Microsoft 365 inboxes. Mailivery also supports Outlook, Gmail, and any email provider that allows SMTP/IMAP connections.
Ready to see how Mailivery handles your warmup? Check out our pricing plans or start your free 7-day trial to test it yourself.
The easiest way to get responses to your cold emails.
