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Mailreef gives cold email teams their own mail server and dedicated IP. Before signing up, ask these four questions because the answers will show whether it fits your team.
Do you need a full mail server for a few campaigns? Mailreef starts at $240 a month, requires a demo or quote, and locks you into an annual contract on its cheapest plan.
Why does your bill change each month? Mailreef charges $0.001 for every email you send on top of your plan.
Who warms up your mailboxes? Mailreef recommends sending one warmup email for every cold email, but you must find and pay for the warmup tool yourself.
What happens when one domain gets flagged? Mailreef puts 150 or more mailboxes on one server and IP, so one flagged domain can affect the others.
If that setup does not match how your team sends, consider the five tools below. Each handles at least one of these areas better than Mailreef, though each comes with trade-offs.
All five providers run their own sending infrastructure, like Mailreef. The main differences are how quickly you can start, what you pay for, and how much deliverability work they handle.
Infraforge is my top choice for teams that want dedicated servers and IPs with room to start small and scale.
I compared each provider across six areas where Mailreef’s model is either strongest or weakest, making the differences easier to see.
Some providers let you sign up and buy mailboxes within minutes. Others require a demo and sell plans designed for a full server. If you want to test one campaign first, the minimum commitment matters more than the headline price.
When several domains share a single IP address, a domain receiving complaints can hurt the others. I checked how each provider limits that risk through smaller server groups, separate workspaces, or rotating IPs.
Infrastructure may be priced per mailbox, per email, or through a flat plan with a sending cap. That pricing model determines whether a busy month costs more than a quiet one.
New domains and IPs need warmup before sending at scale. Some providers include it, others sell pre-warmed setups, and some leave it to your own tool.
Most senders eventually appear on a blacklist. The difference is whether you discover it through a dashboard or falling reply rates, and whether the provider handles delisting and replacement.
A free trial, refund window, or monthly plan lets you test inbox placement with your list before committing. An annual contract does not.
Best for: Teams that want dedicated servers and IPs without a sales call or high monthly minimum.
Infraforge provides dedicated servers and an IP address through a self-serve setup. There is no demo to book. Sign up, buy at least 10 mailbox slots, and launch your first domain and mailbox in about five minutes. DMARC, SPF, DKIM, and custom tracking are configured for you.
If you do not want to wait for warmup, Infraforge offers pre-warmed domains and mailboxes, letting a new setup send the same day.
Agencies can separate clients. Each workspace can use its own IP, and you can move domains and mailboxes between workspaces as clients change. Masterbox brings every reply from a workspace into one inbox.
You also retain control of your domains. You can edit DNS records as you would with any registrar, make bulk updates across domains, and transfer them in or out when needed.
Every Mailreef plan begins with a demo and a monthly price designed for a full server. Infraforge lets you begin with a few mailboxes, test one campaign, and add capacity when the results support it.
There is no free trial because the product needs domains and mailboxes to work, but you can explore the app before buying.
Mailreef’s cheapest plan costs $240 a month with a 12-month commitment or $249 month-to-month, plus $0.001 per email. Ten Infraforge slots cost about $40 a month with quarterly billing and no per-send fee.
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Best for: Teams sending cold, transactional, and compliance emails that want every message checked before it leaves.
Mission Inbox runs your email on isolated servers with dedicated IPs. It separates cold, transactional, and compliance messages into different lanes. If your product sends password resets and invoices alongside outreach, a poor cold campaign cannot harm emails customers are waiting for.
Its standout feature is the Pre-send Shield. It checks each email for spam triggers, weak structure, and broken DNS before sending, then blocks messages likely to land in spam. Most tools warn you after an email goes out. Mission Inbox catches the problem first.
It is designed for developers, offering a RESTful API, SDKs in six languages, and webhooks. Before buying, confirm which plan includes API access and note that refunds only cover the two days after renewal.
Mailreef monitors your server and mailboxes. Mission Inbox also checks each email, stopping spammy templates or broken DNS records before they damage your reputation
Each plan includes a fixed number of sends, with added charges beyond that amount. If you send heavily, calculate your monthly volume before choosing a plan. Mission Inbox has a 4.4/5 Trustpilot rating based on 10 reviews.
For 100,000 monthly emails across 100 mailboxes, Mission Inbox costs $429 to $499 compared with Mailreef’s $349.
Best for: Teams that want a bad domain contained within a small group and warmup managed by the provider.
Aerosend builds private sending infrastructure on aged IPs. These IPs already have sending history, so you are not starting from zero while waiting for inbox providers to trust them.
It also works as a managed service. Aerosend handles warmup, checks every domain daily, runs inbox placement tests every two weeks, and alerts you when a domain goes bad so you can replace it.
Plan your inbox count around a lower sending rate. Aerosend limits each inbox to 20 to 25 emails daily, so reaching the same volume requires more inboxes than providers with higher limits.
When many domains share a server and IP address, one domain receiving spam complaints can hurt the others. Mailreef places at least 150 mailboxes on one server. Aerosend puts every 10 domains on a dedicated server, keeping problems within that group.
Aerosend’s limit of 20 to 25 daily emails per inbox is half Mailreef’s recommended 50.
Sending 100,000 emails a month requires about 200 Aerosend inboxes, costing roughly $700 versus Mailreef’s $349.
The difference includes warmup you would otherwise manage separately.
Best for: Teams that want managed blacklist recovery and unlimited inboxes under one plan.
Inframail runs on Microsoft’s cloud platform using dedicated US IPs, and every plan allows unlimited inboxes. Moving from a new domain to active inboxes takes about three minutes, and you can export them directly to Instantly, Smartlead, or ReachInbox.
Every self-serve plan includes a one-on-one deliverability consultant. For a more hands-off option, its done-for-you plan covers account setup, warmup, and campaign building with a dedicated coach.
Inframail claims deliverability of at least 98%, measured through MailReach, GlockApps, and Inboxally. It does not explain its testing process, so run your own placement test during the first week.
Removing a domain from blacklists usually means submitting requests manually, one list at a time. Inframail shows every listed domain in its dashboard and submits requests for you. Mailreef monitors servers and mailboxes but does not mention automatic delisting.
Unlike Mailreef, each plan limits monthly sending volume. Choose your plan based on email volume rather than the number of inboxes.
For 100,000 emails a month, you need the Agency Pack at $327 monthly or $228.90 billed yearly, compared with Mailreef’s $349. The Unlimited plan caps sending at 80,000.
Best for: Teams that want SMTP and Google Workspace mailboxes from one provider.
Maildoso sells SMTP mailboxes and Google Workspace accounts through the same account. This lets you combine lower-cost SMTP volume with a smaller group of Google mailboxes.
Its SMTP mailboxes send through a rotating pool of IPs. If an IP becomes blacklisted, Maildoso replaces it automatically, so you do not need to wait for support to move you. The trade-off is that you do not own a dedicated IP.
Maildoso also rests every mailbox for a set period every two weeks to clear provider flags. Before buying, note that it recommends 15 daily emails per mailbox, does not offer Microsoft 365 or Azure, and has not added warmup yet.
Google Workspace mailboxes cost more but use Google’s infrastructure. SMTP mailboxes are cheaper and better suited to volume. Mailreef only sells SMTP and IMAP mailboxes. Maildoso lets you use both options without adding another provider.
Maildoso orders start at $25. Mailreef’s lowest plan costs $240 per month with a 12-month commitment, or $249 per month with a 12-month commitment, plus $0.001 per send. Because Maildoso recommends 15 daily emails per mailbox, you may need more mailboxes for the same volume. Compare both using your actual daily sending needs.
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I recommend Infraforge for most teams moving away from Mailreef. You still get dedicated servers and IPs, but you can sign up without a demo, begin with 10 mailbox slots, and avoid per-email charges.
You also do not need to switch everything immediately. Move one campaign to Infraforge, compare its inbox placement and replies with Mailreef for two weeks, and migrate the rest once the results hold.
Some teams need a more specialized option. Aerosend handles warmup and domain monitoring. Mission Inbox checks every email before sending, making it useful for teams that also send product emails. Inframail manages blacklist delisting requests, while Maildoso combines SMTP and Google Workspace in one account.