# Maildoso review (2026): is it worth $75 a month? > Cold email mailboxes and domains sold by the mailbox Checked Nov 12, 2026 ยท graded Nov 12, 2026 by ToolGPA. Maildoso supplies mailboxes and domains built for outbound email and sets up SPF, DKIM and DMARC for them. It is infrastructure rather than a sequencer: you export the mailboxes to a tool such as Instantly or Smartlead. Pricing is a monthly fee for a block of mailboxes, with domains bought separately. - **Category:** Cold Outreach - **Made by:** BacklinkSwappers, inc. - **Website:** https://maildoso.ai - **Runs on:** Web - **Who should skip it:** Skip it if you need just a few mailboxes, since 30 is the smallest block. - **Facts last checked:** Nov 12, 2026 ## Pricing As of Nov 12, 2026, Maildoso is a paid product, starting at $75 per month for 30 mailboxes. - **Pricing model:** Paid - **Free plan:** None. - **Free trial:** None listed. | Plan | Price | What you get | | --- | --- | --- | | 30 mailboxes | $75 per month for 30 mailboxes ($2.50 each) | Aimed at early-stage teams. Up to 15 cold emails a day per mailbox, plus the features every plan includes. | | 300 mailboxes | $225 per month for 300 mailboxes ($0.75 each) | Aimed at expanding teams. Same features and 15-a-day limit per mailbox as the smaller block. | | 1,000 mailboxes | $499 per month for 1,000 mailboxes ($0.49 each) | Aimed at large-scale campaigns. Same features and per-mailbox limit. | Read from https://maildoso.ai/pricing on Nov 12, 2026. Prices change, so confirm with Maildoso before buying. ## Key features - **Mailboxes built for outbound:** Dedicated mailboxes on the vendor's own servers and IPs, with IP rotation and automatic replacement of IPs that stop working. - **Automatic DNS setup:** SPF, DKIM and DMARC records are configured when you register mailboxes under a domain bought or connected through the dashboard. - **Self-healing and health scores:** Burned-out mailboxes are disconnected from campaigns for 14 days, and inbox placement tests run every 3 days with a health score per mailbox. - **Sequencer export:** Mailboxes can be exported to outreach platforms; Instantly, Smartlead and EmailBizon sync with one click, and the vendor says 9 sequencers are supported. - **API and MCP server:** Register domains, create mailboxes and push them to a sequencer from code or from an AI assistant such as Claude. - **Pre-warmed domains:** Domains warmed in advance, each holding up to 50 mailboxes, so new mailboxes can start sending without the usual 14-day wait. ## Good for - Agencies and sales teams that send from many secondary domains - Teams that already use a sequencer and want cheap extra mailboxes - Buyers who want mailbox setup done through an API ## Worth knowing - Each mailbox sends at most 15 cold emails and 80 warm-up emails a day, and new mailboxes still need about 14 days of warm-up unless they sit on pre-warmed domains. - Domains are not included in monthly plans: registration is $15 a year and a pre-warmed domain is $11.90 a month. - Quarterly plans with domains included are labeled legacy on the pricing page; the monthly blocks are the current plans. - Subscriptions are canceled through support chat or email, and the page says it has a no-discount policy with no promotions. ## ToolGPA grades **GPA: 1.4 out of 4**, graded Nov 12, 2026. Maildoso supplies mailboxes and domains for outbound email and sets up SPF, DKIM and DMARC. You export them to a sequencer like Instantly or Smartlead. The floor is $75 a month for 30 mailboxes, domains cost extra, and each mailbox sends at most 15 cold emails a day. - **Value for money: D.** $75 a month for 30 mailboxes is the smallest plan, which is where the category's dearest tenth begins. Domains aren't included. It is cheaper per mailbox as blocks grow. - **Free plan and trial: F.** No free plan and no trial on record. It also has a no-discount policy. - **Features: D.** Mailboxes and DNS only. It is infrastructure and needs a separate sender, and each mailbox is capped at 15 cold emails a day. - **Ease of use: C.** No store rating on record. Mailboxes come set up, but new ones need about 14 days of warm-up and a sender to connect. - **Platforms and integrations: B.** Web, exporting to Instantly, Smartlead, Saleshandy and EmailBizon. These are ToolGPA's own grades. Graded from this listing, whose facts were read from Maildoso's own pages on 12 November 2026. Not based on using the product, and shorter than our full reviews. ## Where it stands among cold outreach tools - Maildoso's GPA of 1.4 is higher than 0 of the 47 other cold outreach tools we grade, and level with 2. - It stands best on platforms and integrations (B, above 9 of 47) and worst on free plan and trial (F, above 0). - Its paid plans start at $75 a month, against a middle price of $39 for the category: 39 of the 43 others that charge start lower. - On features, ease of use and platforms it scores 2.0 out of 4. 30 tools score higher and cost less. The category's chart of price against score: https://toolgpa.com/charts/cold-outreach ## Keep it, or make your own? **You could make this.** What Maildoso does at its core is plain work, and that is the kind of thing an AI app builder makes well. You would give up 2 things, listed below, and little else. It costs $900 a year. An AI app builder starts at about $20 a month on our listings, and you only need it while you build. - You could make: It runs in a browser, which is where something home-made would run too. - You could not: Reading the reports inbox providers send about your domain. - You could not: It plugs into other products, Instantly, Smartlead and Saleshandy among them, and has an API. A judgement by ToolGPA from this listing, by rules that are the same for every tool. Nothing was built to test it. ## Works with Instantly, Smartlead, Saleshandy, EmailBizon **Tags:** Public API, DMARC ## Alternatives - [Mailforge](https://toolgpa.com/tools/mailforge): Shared-IP domains and mailboxes built for cold email sending. [Compare](https://toolgpa.com/compare/maildoso-vs-mailforge) - [Infraforge](https://toolgpa.com/tools/infraforge): Private cold email infrastructure on dedicated IPs. [Compare](https://toolgpa.com/compare/infraforge-vs-maildoso) - [Inboxkit](https://toolgpa.com/tools/inboxkit): Google and Microsoft mailboxes for cold email, priced per mailbox. [Compare](https://toolgpa.com/compare/inboxkit-vs-maildoso) - [Instantly](https://toolgpa.com/tools/instantly): Cold email from unlimited inboxes, priced by emails and contacts. [Compare](https://toolgpa.com/compare/instantly-vs-maildoso) - [Smartlead](https://toolgpa.com/tools/smartlead): High-volume cold email with unlimited mailboxes and client workspaces. [Compare](https://toolgpa.com/compare/maildoso-vs-smartlead) ## Sources The prices, plans, platforms and features above were read from these pages on Nov 12, 2026: - https://maildoso.ai/pricing - https://maildoso.ai/ Page: https://toolgpa.com/tools/maildoso Listed by ToolGPA (toolgpa.com).