Maildoso vs ScaledMail (2026): which should you pick?

Pick Maildoso if

• Fits if you need 30 or more mailboxes for an outbound team
• Works for senders who already run Instantly or Smartlead

Look elsewhere if

• Skip it if you need just a few mailboxes, since 30 is the smallest block
• Not for you if you want a trial or a discount, because neither exists
• Watch out: domains cost extra, $15 a year or $11.90 a month pre-warmed
• Tight if you want volume per mailbox: 15 cold emails a day each

Pick ScaledMail if

• Fits if you already have a sequencer and need mailboxes for it
• Works for agencies that want infrastructure set up for them

Look elsewhere if

• Skip it if you want to try it first, as there is no trial and no free plan
• Not for you if you want to send campaigns from it, since it only supplies mailboxes
• Tight if you send much, because each mailbox is capped at 25 emails a day on Google and 10 on Outlook and SMTP
• Pricey if you want reporting, as it adds $2 a mailbox a month and turns the page's 2,000-a-day example from $397.75 into $653.75

Maildoso

• 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.

ScaledMail

• It provides infrastructure only: warm-up and sending run in your sequencer, such as Smartlead, Instantly, EmailBison or PlusVibe.
• The listed mailbox limits are 25 emails a day on Google Workspace and 10 on Outlook and SMTP.
• The page's 2,000-emails-a-day example comes to $397.75 a month before reporting, $256 more with it on every account.
• Billing is monthly with no long-term contract; the volume can be adjusted.

Maildoso

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.

ScaledMail

Managed mailboxes

Google Workspace, Microsoft Outlook and SMTP mailboxes are created for you, and the three types can be mixed in one package.

Domain and DNS setup

ScaledMail registers a domain or connects one from another registrar, and configures SPF, DKIM and DMARC.

IP rotation and monitoring

Every package includes IP rotation and ongoing reputation and deliverability monitoring.

Volume calculator

A calculator sizes a package from a daily or monthly sending target and shows the cost, including an example for 2,000 emails a day.

Dedicated Slack support

Each package includes a dedicated Slack support channel, and setup is listed as taking 24 to 72 hours.

Maildoso

• 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.

ScaledMail

• Google Workspace$3.50

  per mailbox / month

  2 to 3 mailboxes per domain, up to 25 emails per mailbox a day, with SPF, DKIM and DMARC set up. Optional reporting add-on at $2 per mailbox a month.

• Microsoft Outlook$50

  per domain / month

  25 mailboxes per domain, up to 10 emails per mailbox a day. Optional reporting add-on at $5 per domain a month.

• SMTP Server$3.75

  per domain / month

  4 mailboxes per domain, up to 10 emails per mailbox a day. Optional reporting add-on at $2 per mailbox a month.