MailDeck vs ScaledMail: two managed vendors for Outlook, Google and SMTP inboxes
MailDeck and ScaledMail sell the same three inbox types, build them for you and load them into your sequencer, and both leave warm-up to that sequencer. They differ in how they package Outlook: MailDeck puts 100 inboxes on one $30 tenant, ScaledMail 25 mailboxes on a $50 domain. ScaledMail publishes higher sends per mailbox, a public API and sells domains; MailDeck is cheaper per inbox and wants your registrar login.
- Warm-up and sending included
- $2.50 a mailbox, 12 minimum
- Month-to-month billing
MailDeck
ScaledMail
- Price per mailbox
- from $0.30 (Outlook, $30 a tenant of 100)from $0.94 (SMTP, $3.75 per domain of 4)
- Smallest order
- 2 Outlook tenants (200 inboxes, $60 a month); Google 10 inboxes ($39); SMTP 100 inboxes ($50)No minimum stated; monthly billing, no long-term contract
- Mailbox types
- Google, Microsoft, SMTPGoogle, Microsoft, SMTP
- Warm-up
- MailDeck switches it on in your sequencer, which runs it; 3–7 days on Outlook, 15 days on Google, 3–4 weeks on SMTP before cold emailRuns in your sequencer; about 2 weeks recommended before scaling
MailDeck vs ScaledMail, line by line
Each cell links to the vendor's page it comes from.
| Feature | MailDeck | ScaledMail |
|---|---|---|
| Smallest order | 2 Outlook tenants (200 inboxes, $60 a month); Google 10 inboxes ($39); SMTP 100 inboxes ($50) source (opens the vendor's page in a new tab) | No minimum stated; monthly billing, no long-term contract source (opens the vendor's page in a new tab) |
| Setup time | 48–72 hours by MailDeck's team; Google instant, SMTP within 24 hours, Outlook 2–3 business days per the FAQ source (opens the vendor's page in a new tab) | 24–72 hours on the pricing page; 2–4 business days on the home page source (opens the vendor's page in a new tab) |
| Mailbox types | Microsoft 365 tenants (up to 100 inboxes on one domain), Google Workspace and private SMTP (5 inboxes per domain) source (opens the vendor's page in a new tab) | Google Workspace, Microsoft 365 and SMTP, mixable in one package source (opens the vendor's page in a new tab) |
| Domains | Bring your own, bought at a registrar other than Cloudflare; domains cannot be bought in the app source (opens the vendor's page in a new tab) | Bought through ScaledMail or connected from another registrar; pre-aged and pre-warmed domains sold too source (opens the vendor's page in a new tab) |
| Sending limits | Pricing page: Outlook 4–5 (Premium 8–10), Google 20, SMTP 10–15 cold emails per inbox a day; help docs: Outlook 10, Premium 12, Google about 20, SMTP 8 source (opens the vendor's page in a new tab) | Google up to 25 emails per mailbox a day; Outlook and SMTP up to 10 source (opens the vendor's page in a new tab) |
| Warm-up | Partly, or at extra costMailDeck switches it on in your sequencer, which runs it; 3–7 days on Outlook, 15 days on Google, 3–4 weeks on SMTP before cold email source (opens the vendor's page in a new tab) | Not includedRuns in your sequencer; about 2 weeks recommended before scaling source (opens the vendor's page in a new tab) |
| Sequencers | Team adds inboxes to Instantly, Plusvibe, Smartlead, EmailBison or Manyreach with your sequencer login; the site lists more SMTP tools source (opens the vendor's page in a new tab) | Smartlead, Instantly, EmailBison, PlusVibe, Apollo, Lemlist, Saleshandy and others source (opens the vendor's page in a new tab) |
| API | Partly, or at extra cost"Full API access with webhooks" listed on the Google plans; no public API documentation found source (opens the vendor's page in a new tab) | IncludedPublic REST API: workspaces, domains, orders, mailboxes, reporting; 5 requests a second source (opens the vendor's page in a new tab) |
| MCP server | Not includedNone found on the site or in the help docs source (opens the vendor's page in a new tab) | Not includedNone found on the site or in the API docs source (opens the vendor's page in a new tab) |
| Support | Live chat in the app, a private Slack channel per customer, email and the Maya AI assistant; "24/7 priority support" on the home page source (opens the vendor's page in a new tab) | A dedicated Slack channel with every package; email support source (opens the vendor's page in a new tab) |
| Refunds | Only for trial users with one tenant, within 30 days, if mailboxes were not delivered working within 10–14 business days; one refund per customer source (opens the vendor's page in a new tab) | All fees non-refundable, including after a block by Google or Microsoft; cancel for the end of the billing period source (opens the vendor's page in a new tab) |
| Trial | Not published; the refund policy refers to "trial users with a single tenant" source (opens the vendor's page in a new tab) | Free account without a card; no free mailboxes source (opens the vendor's page in a new tab) |
Smallest order
- MailDeck
- 2 Outlook tenants (200 inboxes, $60 a month); Google 10 inboxes ($39); SMTP 100 inboxes ($50) source (opens the vendor's page in a new tab)
- ScaledMail
- No minimum stated; monthly billing, no long-term contract source (opens the vendor's page in a new tab)
Setup time
- MailDeck
- 48–72 hours by MailDeck's team; Google instant, SMTP within 24 hours, Outlook 2–3 business days per the FAQ source (opens the vendor's page in a new tab)
- ScaledMail
- 24–72 hours on the pricing page; 2–4 business days on the home page source (opens the vendor's page in a new tab)
Mailbox types
- MailDeck
- Microsoft 365 tenants (up to 100 inboxes on one domain), Google Workspace and private SMTP (5 inboxes per domain) source (opens the vendor's page in a new tab)
- ScaledMail
- Google Workspace, Microsoft 365 and SMTP, mixable in one package source (opens the vendor's page in a new tab)
Domains
- MailDeck
- Bring your own, bought at a registrar other than Cloudflare; domains cannot be bought in the app source (opens the vendor's page in a new tab)
- ScaledMail
- Bought through ScaledMail or connected from another registrar; pre-aged and pre-warmed domains sold too source (opens the vendor's page in a new tab)
Sending limits
- MailDeck
- Pricing page: Outlook 4–5 (Premium 8–10), Google 20, SMTP 10–15 cold emails per inbox a day; help docs: Outlook 10, Premium 12, Google about 20, SMTP 8 source (opens the vendor's page in a new tab)
- ScaledMail
- Google up to 25 emails per mailbox a day; Outlook and SMTP up to 10 source (opens the vendor's page in a new tab)
Warm-up
- MailDeck
- Partly, or at extra costMailDeck switches it on in your sequencer, which runs it; 3–7 days on Outlook, 15 days on Google, 3–4 weeks on SMTP before cold email source (opens the vendor's page in a new tab)
- ScaledMail
- Not includedRuns in your sequencer; about 2 weeks recommended before scaling source (opens the vendor's page in a new tab)
Sequencers
- MailDeck
- Team adds inboxes to Instantly, Plusvibe, Smartlead, EmailBison or Manyreach with your sequencer login; the site lists more SMTP tools source (opens the vendor's page in a new tab)
- ScaledMail
- Smartlead, Instantly, EmailBison, PlusVibe, Apollo, Lemlist, Saleshandy and others source (opens the vendor's page in a new tab)
API
- MailDeck
- Partly, or at extra cost"Full API access with webhooks" listed on the Google plans; no public API documentation found source (opens the vendor's page in a new tab)
- ScaledMail
- IncludedPublic REST API: workspaces, domains, orders, mailboxes, reporting; 5 requests a second source (opens the vendor's page in a new tab)
MCP server
- MailDeck
- Not includedNone found on the site or in the help docs source (opens the vendor's page in a new tab)
- ScaledMail
- Not includedNone found on the site or in the API docs source (opens the vendor's page in a new tab)
Support
- MailDeck
- Live chat in the app, a private Slack channel per customer, email and the Maya AI assistant; "24/7 priority support" on the home page source (opens the vendor's page in a new tab)
- ScaledMail
- A dedicated Slack channel with every package; email support source (opens the vendor's page in a new tab)
Refunds
- MailDeck
- Only for trial users with one tenant, within 30 days, if mailboxes were not delivered working within 10–14 business days; one refund per customer source (opens the vendor's page in a new tab)
- ScaledMail
- All fees non-refundable, including after a block by Google or Microsoft; cancel for the end of the billing period source (opens the vendor's page in a new tab)
Trial
- MailDeck
- Not published; the refund policy refers to "trial users with a single tenant" source (opens the vendor's page in a new tab)
- ScaledMail
- Free account without a card; no free mailboxes source (opens the vendor's page in a new tab)
MailDeck and ScaledMail prices
MailDeck
| Plan | Price | Mailboxes | Per mailbox | Billing | Includes |
|---|---|---|---|---|---|
| Outlook Normal | $30 a month | per tenant, 100 inboxes | $0.30 | monthly | One Microsoft 365 tenant on one domain; 4–5 cold emails per inbox a day on the pricing page source (opens the vendor's page in a new tab) |
| Outlook Mixed | $35 a month | per tenant, 50 Normal + 50 Premium | $0.35 | monthly | Normal and Premium licences on one domain source (opens the vendor's page in a new tab) |
| Outlook Premium | $40 a month | per tenant, 100 inboxes | $0.40 | monthly | Extra deliverability configuration; 8–10 cold emails per inbox a day on the pricing page source (opens the vendor's page in a new tab) |
| Pre-warmed Outlook | $40 a month | per tenant, 100 inboxes | $0.40 | monthly | Runs on MailDeck's own warmed domains; availability varies source (opens the vendor's page in a new tab) |
| Google Workspace Starter | $39 a month | 10 (extra $3.50) | $3.90 | monthly | Up to 20 cold emails per inbox a day; 5 inboxes per domain source (opens the vendor's page in a new tab) |
| Google Workspace Growth | $99 a month | 30 (extra $3.25) | $3.30 | monthly | Same; covers 6 domains source (opens the vendor's page in a new tab) |
| Google Workspace Enterprise | $299 a month | 100 (extra $2.99) | $2.99 | monthly | Same; covers 20 domains, Slack support source (opens the vendor's page in a new tab) |
| Private SMTP | $0.50 a month | per inbox, 100 minimum | $0.50 | monthly | Dedicated IP per client; 5 inboxes per domain source (opens the vendor's page in a new tab) |
| Diversified Starter | $99 a month | 200 Outlook Premium + 10 SMTP + 5 Google | $0.46 | monthly | 40,000 cold sends a month per MailDeck; 5 domains to bring source (opens the vendor's page in a new tab) |
| Diversified Growth | $399 a month | 1,000 Outlook Premium + 100 SMTP + 30 Google | $0.35 | monthly | 215,000 cold sends a month per MailDeck; 36 domains to bring source (opens the vendor's page in a new tab) |
| Diversified Enterprise | $3,499 a month | 10,000 Outlook Premium + 1,000 SMTP + 300 Google | $0.31 | monthly | 2.15M cold sends a month per MailDeck; 360 domains to bring source (opens the vendor's page in a new tab) |
ScaledMail
| Plan | Price | Mailboxes | Per mailbox | Billing | Includes |
|---|---|---|---|---|---|
| Google Workspace | $3.50 a month | per mailbox, 2–3 per domain | $3.50 | monthly | SPF, DKIM, DMARC; up to 25 emails per mailbox a day source (opens the vendor's page in a new tab) |
| Microsoft Outlook | $50 a month | per domain, 25 mailboxes | $2.00 | monthly | SPF, DKIM, DMARC; up to 10 emails per mailbox a day source (opens the vendor's page in a new tab) |
| SMTP server | $3.75 a month | per domain, 4 mailboxes | $0.94 | monthly | SPF, DKIM, DMARC; up to 10 emails per mailbox a day source (opens the vendor's page in a new tab) |
List prices from MailDeck's pricing page and ScaledMail's pricing page, checked . Taxes and card fees excluded.
Cost at 2,000 cold emails a day
Outlook: MailDeck Premium sends 8 to 10 a day per its pricing page, so 2,000 a day takes 200 to 250 inboxes, 2 or 3 tenants at $40: $80 to $120 a month at the current sale price, on 2 or 3 domains you buy. ScaledMail Outlook sends up to 10 a day, so 200 mailboxes on 8 domains at $50: $400 a month.
Google: MailDeck says about 20 a day per inbox, so 100 inboxes, the $299 Enterprise plan. ScaledMail allows up to 25, so 80 mailboxes at $3.50: $280 a month. ScaledMail's reporting add-on is $2 a mailbox more.
Both bills leave out the same item: the sequencer that runs warm-up and every send. Domains are separate at both; ScaledMail does not publish its domain price.
Where they differ
Inboxes per domain
MailDeck's Outlook tenant is one domain with up to 100 mailboxes. ScaledMail's Outlook domain carries 25, and its Microsoft tenant IPs rotate every 15 days. Google and SMTP sit at 5 per domain on MailDeck, 2 to 3 (Google) and 4 (SMTP) on ScaledMail.
Fewer domains means fewer to buy and renew. It also means one burned domain takes 100 MailDeck inboxes with it, against 25 at ScaledMail. MailDeck replaces burned domains for free.
Setup and what you hand over
ScaledMail buys domains for you or connects yours, and quotes 24 to 72 hours (2 to 4 business days on the home page). MailDeck needs domains you already own, your registrar login with two-factor login switched off during setup, and your sequencer password; it quotes 48 to 72 hours.
Both give every customer a private Slack channel. ScaledMail has a public REST API for workspaces, domains, orders and mailboxes. MailDeck lists API access on its Google plans but publishes no API docs. Neither runs an MCP server.
Refunds and ratings
ScaledMail's terms make every fee non-refundable, including after a block by Google or Microsoft. MailDeck refunds only trial users with one tenant whose mailboxes were not delivered working within 10 to 14 business days, once per customer.
On Trustpilot ScaledMail had 4.8 from 46 reviews and MailDeck 4.3 from 29 when we checked. MailDeck's home page shows 4.8, and Trustpilot flags it for displaying Trustpilot content incorrectly.
Which one to pick
Pick MailDeck if
- You want the lowest Outlook price per inbox and accept 4 to 10 sends per inbox a day
- You already own your domains and can share registrar access
- You want a ready mix of Outlook, SMTP and Google in one bundle
Pick ScaledMail if
- You want more sends per Outlook mailbox and fewer inboxes per domain
- You want domains bought for you and a public API
- You value a higher Trustpilot score from more reviews
Where Outreach2day fits
We sell cold email mailboxes too, so this section is ours. The comparison above does not rank us.
Outreach2day is a third route. Both of these sell inboxes and leave warm-up and sending to a sequencer you pay for. We sell SMTP/IMAP mailboxes at $2.50 with warm-up and a built-in sequencer in that price, and each mailbox sends up to 25 cold emails a day: 2,000 a day is 80 mailboxes, $200 a month, with no sequencer plan on top.
We sell no Outlook or Google accounts. If your list needs Microsoft or Google senders, pick one of these two; if you want mailboxes, warm-up and sending on one bill, set up in minutes, we fit better.
From 1,000 mailboxes Outreach2day quotes a volume price below the per-mailbox list price of every vendor in our comparisons, including Maildoso's $0.49, with warm-up and sending in the price. Book a call and we quote your volume.
MailDeck vs ScaledMail: questions
Is MailDeck cheaper than ScaledMail?
Per Outlook inbox, yes: $0.30 to $0.40 on a 100-inbox tenant against $2 on ScaledMail's 25-mailbox domain. MailDeck's inboxes send fewer emails a day, and its prices are marked as a sale over higher regular prices. On Google, ScaledMail's $3.50 at 25 a day costs less per email than MailDeck's plans at about 20.
Do MailDeck and ScaledMail include warm-up?
Both set up warm-up in your sequencer, which runs it. Neither sells warm-up of its own.
Which sells domains?
ScaledMail sells domains or connects yours. MailDeck does not sell domains; you buy them at a registrar other than Cloudflare.
Which has an API?
ScaledMail publishes a REST API. MailDeck lists API access on its Google plans but publishes no documentation. Neither has an MCP server.
Do they give refunds?
ScaledMail refunds nothing. MailDeck refunds only single-tenant trial users within 30 days when the mailboxes were not delivered working.
Deliverability call
Talk to our deliverability team
Book a call with the people who run our mailbox infrastructure. We look at your current setup and tell you what to change. Running 1,000+ mailboxes? We also quote a volume price below every vendor list price in our comparisons, warm-up and sending included.
- Review your domains, DNS records and current inbox placement
- Size the setup: domains, mailboxes per domain and daily volume per mailbox
- Plan warm-up and the move from your current provider or sequencer
- 1,000+ mailboxes: a volume price per mailbox for your setup
Free call
See open times in your time zone and book on this page.
Or open the booking pageLoading available times…
Open the booking page insteadMore on MailDeck and ScaledMail
- MailDeck reviewPlans, limits, warm-up, API and MCP, support and refunds, with sources
- MailDeck alternativesOptions side by side with prices and mailbox types
- MailDeck vs MaildosoTwo vendors side by side
- ScaledMail reviewPlans, limits, warm-up, API and MCP, support and refunds, with sources
- ScaledMail alternativesOptions side by side with prices and mailbox types
- ScaledMail pricing 2026Every plan and what it costs at 25, 100 and 400 mailboxes
- Microsoft 365 and Outlook Sending LimitsBlog
- ScaledMail Pricing 2026: Plans, Add-Ons and Real CostBlog
Sources
Each vendor's own pages. Vendors change prices and plans; if something here is out of date, write to support@outreach2day.com and we will fix it.
MailDeck
- maildeck.co/about
- maildeck.co/legal/terms
- maildeck.co/pricing
- docs.maildeck.co/plans/pricing
- maildeck.co
- maildeck.co/faq
- docs.maildeck.co/domains-dns/domains
- docs.maildeck.co/deliverability/sending-limits
- docs.maildeck.co/deliverability/warmup
- docs.maildeck.co/getting-started/connect-your-sequencer
- docs.maildeck.co/support/getting-help
- maildeck.co/legal/refund
- docs.maildeck.co/getting-started/your-first-order
- maildeck.co/legal/cancellation
- trustpilot.com/review/maildeck.co
- g2.com/products/maildeck/reviews
First cold emails on day 14, full volume on day 21
Add domains, create mailboxes and turn on warm-up. You see every mailbox's warm-up numbers from day one.