Inboxkit vs Mailreef (2026): which should you pick?
As of Nov 13, 2026, Inboxkit grades higher than Mailreef: 1.8 against 1.4 out of 4.0.
Checked Nov 12, 2026 and Nov 13, 2026 · graded Nov 12, 2026 and Nov 13, 2026 by ToolGPA
Inboxkit grades higher on value for money. They get the same grade on the free plan, features, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Inboxkit
Google and Microsoft mailboxes for cold email, priced per mailbox
Which one is for you
Pick Inboxkit if
- Fits if you run a sequencer and need a lot of mailboxes fast
- Works for teams who want Google or Microsoft mailboxes, not shared SMTP
Look elsewhere if
- Skip it if you want a sending tool, since you still need a sequencer
- Not for you if you want a free trial, as there isn't one
- Watch out: warmup and InfraGuard are paid add-ons and their rates aren't shown
- Tight if you can't top up a prepaid wallet by card
Pick Mailreef if
- Fits if you send more than 20,000 cold emails a month and want your own server
- Works for agencies that already run Smartlead or Instantly
Look elsewhere if
- Not for you if you send a few hundred emails a month, as the plan starts at $240
- Pricey if you can't commit for 12 months: month to month is $249
- Skip it if you want to try before paying, since both plans go through a demo
- Watch out: $0.001 a send is added to the monthly price
- Too light on its own, because campaigns are sent from a separate tool
How we grade them
| 1.8GPAInboxkitWeak | 1.4GPAMailreefWeak | |
|---|---|---|
| Value for money | B$2.50 a mailbox a month on yearly billing, $3 monthly. Ten mailboxes is $25, in the cheapest quarter ($25). Domains cost extra, from $12.50 each, once. | D$240 a month on a 12-month commitment ($249 month to month), plus $1 per 1,000 emails. The dearest tenth of cold-outreach tools starts at $120, though you do get a whole dedicated server. |
| Free plan and trial | FNo free plan and no trial. Each mailbox is charged from the first month, out of a prepaid wallet. | FNo free plan and no trial; both plans are booked through a demo. |
| Features | DIt supplies mailboxes and DNS, and needs a sequencer like Instantly or Smartlead to do anything. Warmup and InfraGuard are add-ons. | DA dedicated server, mailboxes, monitoring and an API, but no sending tool, leads or sequences. It needs another product to be useful. |
| Ease of use | CNo store rating on record. DNS is automated, but you still connect mailboxes to another tool. | CNo store rating on record. You book a demo, then connect mailboxes to a separate sender. |
| Platforms and integrations | BWeb with an API, plus Instantly, Smartlead, Apollo, Google Workspace and Microsoft 365. | BWeb, with an API and Smartlead and Instantly connections. |
| Best for | Google and Microsoft mailboxes for cold email | a dedicated cold email server for high volume |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Inboxkit and Mailreef. How we grade
Price against what you get
Inboxkit starts at $2.50 a month and scores 2.0 out of 4 on features, ease of use and platforms. Mailreef starts at $240 a month and scores 2.0.
They score the same, and Inboxkit starts $237.50 a month lower. Of the other cold outreach tools on the chart, none scores higher than Inboxkit for less, and 48 score higher than Mailreef for less.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Where they differ
At a glance
| Inboxkit | Mailreef | |
|---|---|---|
| Pricing | Paid | Paid |
| Starts at | $2.50 per mailbox / month, billed yearly ($3 billed monthly) | $240 per month on a 12-month commitment, plus $0.001 per send |
| Free plan | None | None |
| Free trial | None listed | None listed |
| Web | ||
| Made by | Inboxkit | Mailreef, LLC |
| Price read from | inboxkit.com | mailreef.com |
| Checked | Nov 12, 2026 | Nov 13, 2026 |
Worth knowing
Inboxkit
- Mailboxes are paid from a prepaid wallet topped up by card, with NET-30 invoicing offered only for large volumes.
- Warmup and InfraGuard are paid add-ons; the pricing page does not give their rates.
- There is no free trial: creating an account is free, but each mailbox is charged from the first month.
- The page says there is no promo code; the saving comes from choosing quarterly or annual billing.
Mailreef
- A per-send fee of $0.001 is added to the monthly price, which is $1 for every 1,000 emails.
- The cheaper Agency price needs a 12-month commitment; month-to-month costs $249.
- Both priced plans are booked through a demo, and no free plan or trial is listed.
- It supplies mailboxes only: campaigns are sent from a separate tool.
Key features
Inboxkit
- Official Google and Microsoft accounts
- Mailboxes are real Google Workspace or Microsoft 365 accounts with admin panel access and 2FA for each domain.
- Automated DNS setup
- SPF, DKIM and DMARC records are configured for you, and an isolated panel is kept per domain.
- Sequencer connections
- The vendor lists 24+ integrations with sequencers such as Instantly, Smartlead and Apollo, plus a full REST API with webhooks.
- Mailbox analytics
- Per-mailbox bounce and reply metrics, real-time monitoring and weekly mailbox reports.
- Warmup and InfraGuard add-ons
- Warmup runs on an isolated network, priced per mailbox; InfraGuard watches blacklists and DNS every 6 hours, with the first month free.
- MCP server
- An Inboxkit MCP server lets an AI assistant query mailboxes, domains, DNS and warmup, with hard-to-undo changes waiting for approval.
Mailreef
- Dedicated server and IP
- Each plan includes a dedicated mail server and IP address, with 150 or more mailboxes per server and no shared resources.
- One-click domains and mailboxes
- Domains can be bought and mailboxes created in one click, or you can bring your own domain. SPF, DKIM and DMARC records are created automatically.
- Pre-warmed setup
- The comparison table lists a pre-warmed server, domains and mailboxes so campaigns can start on the first day.
- Monitoring and screening
- Server and mailbox monitoring is included, and the vendor says it screens new accounts for spammers.
- API and sender integrations
- Developer API access is included, along with integrations for Smartlead and Instantly.
Plans
Inboxkit
Google or Microsoft 365 mailbox$2.50
per mailbox / month, billed yearly ($3 billed monthly)
Same rate at any volume. Includes DNS setup, a domain admin panel, API access and unlimited team members.
Azure tenant$30
per tenant / month, up to 100 mailboxes
Microsoft 365 mailboxes on Azure; each tenant holds up to 100 mailboxes.
Pre-warmed mailbox$6
per mailbox / month, domain warmed 2-4 weeks
$7 at 4-8 weeks and $9 at 8+ weeks of warming, billed monthly; each domain also has a one-time fee from $12.50.
Mailreef
Agency$240
per month on a 12-month commitment, plus $0.001 per send
A dedicated server and IP with 150+ mailboxes per server. Bought through a demo booking.
Agency Flex$249
per month, month-to-month, plus $0.001 per send
The same server setup without a commitment, cancelable at any time. Bought through a demo booking.
EnterpriseCustom
Custom infrastructure with special pricing, available by requesting a quote.
Ways to pay less
Inboxkit
- Annual discount
Annual billing saves 17%
Inboxkit's pricing page lists $2.50 per mailbox a month on annual billing against $3 monthly, and 10% off quarterly billing.
Mailreef
No public discounts listed.
Common questions
Which is cheaper, Inboxkit or Mailreef?
As of Nov 13, 2026, Inboxkit is cheaper to start with: $2.50 a month, against $240 a month for Mailreef. Inboxkit starts at $2.50 per mailbox / month, billed yearly ($3 billed monthly), and Mailreef starts at $240 per month on a 12-month commitment, plus $0.001 per send.
Which has a free plan, Inboxkit or Mailreef?
As of Nov 13, 2026, neither Inboxkit nor Mailreef has a free plan.
More comparisons
How this page was made
- The verdict at the top follows a fixed rule. When both tools are in the same category and either is in our top three for it, the verdict follows that ranking: the higher-placed tool is our pick. The top three weigh who each tool suits as well as its grades, so a pick can go against the GPA. Otherwise the page does not pick one and says which grades higher: the higher GPA first; on a tie, the one with a free plan, then the one that starts cheaper in dollars a month, counted the same way for both; if they are still level, what the choice depends on.
- The grades are our own, from each tool’s review or report card. The GPA is their average.
- Prices, plans and platforms come from each tool’s listing. The table above says where each price was read and when.
- The differences and the answers to the questions are worked out from those listings.