Compare sending capacity and domain count before price. Frostmailer lists €30 per month for one tenant, one .com domain, and 25, 50, or 100 inboxes. ScaledMail lists $50 per month per domain with 25 mailboxes. Keep the currencies separate until you apply an exchange rate.
The catch? More inboxes don’t always mean more sending capacity. Frostmailer lists about 200 emails per tenant per day. ScaledMail lists up to 10 emails per Outlook mailbox per day, so up to 250 per domain. Neither figure guarantees delivery.
Quick Comparison
| Detail | Frostmailer | ScaledMail |
|---|---|---|
| Base monthly price | €30 per tenant | $50 per domain |
| Included inboxes | 25, 50, or 100 | 25 |
| Daily sending | About 200 per tenant | Up to 10 per mailbox, 250 per domain |
| Domain coverage | One .com domain | Domain registration or connection included |
| Setup | DNS authentication and warm-up | SPF, DKIM, DMARC and mailbox setup; warm-up runs in your sequencer |
| Provisioning | About 24 hours | 24 to 72 hours |
| Separate costs | Pre-warmed option: €50 per tenant, two-tenant minimum | Optional reporting: $5 per domain a month |
For 100 inboxes on one domain, compare Frostmailer’s €30 tenant against ScaledMail’s four-domain, $200 package total, while checking whether those different domain counts fit your needs.
Before ordering, confirm sending limits, setup fees, commitments, and cancellation terms. Then add taxes, currency conversion, warm-up costs, and any sending-platform subscription to the quote.
Billing Units, Included Services, and Contract Terms
The table below shows what each provider publishes. Check any unlisted fees or commitments before paying, and compare how much mailbox capacity each monthly price covers.
| Billing detail | Frostmailer Standard Azure | ScaledMail Outlook |
|---|---|---|
| Billing unit | One tenant = one .com domain | One domain package with 25 mailboxes |
| Inboxes included | 25, 50, or 100 inboxes | 25 Outlook mailboxes |
| Monthly price | €30 per tenant | $50 per domain |
| Domain coverage | One .com domain included | Domain registration or connection included |
| Setup included | SPF, DKIM, DMARC, and warm-up | SPF, DKIM, DMARC, mailbox setup and monitoring |
| Minimum order | 1 tenant for Standard Azure; pre-warmed Azure requires 2 tenants | Not publicly specified |
Neither provider publishes separate setup fees, minimum commitments, or cancellation terms.
Frostmailer: €30 per Month for 25, 50, or 100 Inboxes
Frostmailer’s Azure Standard plan costs €30 per tenant, including one .com domain and 25, 50, or 100 inboxes. Frostmailer recommends 50 inboxes per tenant. Provisioning takes about 24 hours, and warm-up is included.
ScaledMail: $50 per Month for 25 Inboxes per Domain
ScaledMail’s Outlook plan costs $50 per domain package for 25 Outlook mailboxes. Every package includes domain registration or connection, so you can buy the domain through ScaledMail or bring your own, plus SPF, DKIM and DMARC, mailbox setup, deliverability monitoring and a Slack support channel. Each Outlook mailbox sends up to 10 emails a day. ScaledMail quotes 24 to 72 hours to configure everything.
Warm-up is not part of the ScaledMail package: it runs in your sequencer, and ScaledMail recommends about two weeks before scaling. Pre-warmed domains are available, with no price on its pricing page.
Pre-Warmed Inboxes and Separate Costs
Frostmailer’s pre-warmed Azure option costs €50 per tenant and includes four weeks of warm-up. It requires at least 2 tenants, bringing the minimum to €100 per month.
Keep taxes, currency conversion, and sending-platform subscriptions, such as Smartlead or EmailBison, separate from the mailbox total. ScaledMail's optional reporting add-on costs $5 per domain a month.
Monthly Costs for 25, 50, and 100 Inboxes
Frostmailer vs ScaledMail: Inbox Costs and Sending Capacity
Base Prices and Optional Reporting Costs
The table compares matching inbox counts, showing both the monthly price and the sending volume each plan supports.
| Provider | Billed units | Domains | Inboxes | Base monthly cost | Cost per inbox | Daily sending guidance | Included setup | Recurring add-ons |
|---|---|---|---|---|---|---|---|---|
| Frostmailer | 1 tenant | 1 | 25 | €30 | €1.20 | About 200 emails per tenant per day | .com domain, DNS authentication, warm-up | No separate reporting fee listed |
| Frostmailer | 1 tenant | 1 | 50 | €30 | €0.60 | About 200 emails per tenant per day | .com domain, DNS authentication, warm-up | No separate reporting fee listed |
| Frostmailer | 1 tenant | 1 | 100 | €30 | €0.30 | About 200 emails per tenant per day | .com domain, DNS authentication, warm-up | No separate reporting fee listed |
| ScaledMail | 1 domain | 1 | 25 | $50 | $2.00 | Up to 250 a day (10 per mailbox) | Domain registration or connection; SPF, DKIM, DMARC; mailbox setup | $5 reporting (optional) |
| ScaledMail | 2 domains | 2 | 50 | $100 | $2.00 | Up to 500 a day | Domain registration or connection; SPF, DKIM, DMARC; mailbox setup | $10 reporting (optional) |
| ScaledMail | 4 domains | 4 | 100 | $200 | $2.00 | Up to 1,000 a day | Domain registration or connection; SPF, DKIM, DMARC; mailbox setup | $20 reporting (optional) |
How Unused Inboxes and Exchange Rates Affect Cost
Frostmailer's fixed tenant price means adding inboxes doesn't increase the monthly charge or the listed daily sending capacity. ScaledMail charges by domain, so costs increase as you add domains.
Using 26 inboxes would require a second $50 package and leave 24 of that package unused.
Compared on sending volume instead, about 1,000 emails a day takes 5 Frostmailer tenants (€150 a month, with warm-up included) or 4 ScaledMail domains ($200 a month, at up to 250 each, with warm-up run separately in your sequencer).
For a like-for-like comparison, convert both prices to the same currency and use the inbox count your agency actually needs.
Choosing Inbox and Domain Counts for Your Agency
Match your inbox needs to the tenant and domain counts below. The cheapest package depends on how many domains you need across tenants.
| Required inboxes | Client domains | Frostmailer tenants | ScaledMail domain packages |
|---|---|---|---|
| 1 to 24 | 1 | 1 | 1 |
| 25 | 1 | 1 | 1 |
| 50 | 1 | 1 | Requires 2 domains |
| 50 | 2 | 2 | 2 |
| 100 | 1 | 1 | Requires 4 domains |
| 100 | 4 | 4 | 4 |
Monthly totals use base pricing and exclude ScaledMail reporting.
Buying 25 Inboxes or Fewer
Need fewer than 25 inboxes? Both providers still require a 25-inbox package. At exactly 25 inboxes, Frostmailer costs €30 per month. ScaledMail costs $50 per month.
Buying 50 or 100 Inboxes Across Client Domains
When inboxes span multiple client domains, pricing depends on tenant count. Frostmailer stays at €30 per month for 50 or 100 inboxes in one tenant with one domain. ScaledMail requires two domains for 50 inboxes and four for 100.
At 50 inboxes across two client domains, Frostmailer needs two tenants at €60 per month; ScaledMail needs two domains at $100.
At 100 inboxes across four client domains, Frostmailer needs four tenants at €120 per month; ScaledMail needs four domains at $200.
Conclusion: Compare the Total Cost for Your Required Capacity
Compare total monthly costs at the inbox count you need. Frostmailer bills by tenant, while ScaledMail bills by domain. The cheaper option depends on both your inbox and domain counts.
| Package | Monthly cost and inclusion |
|---|---|
| Frostmailer tenant | €30; one .com domain included |
| ScaledMail base | $50 per domain; 25 inboxes |
| ScaledMail with reporting | $55 per domain; 25 inboxes |
Choose Frostmailer for a lower monthly cost at the same inbox count. Choose ScaledMail only if its per-domain packages suit your setup better. Match both domain and inbox counts before comparing totals.
Convert prices to one currency and add taxes, reporting, and pre-warming costs. Then get the full recurring quote in writing.
FAQs
How many Frostmailer tenants do I need for my daily sending goal?
Start with your daily email goal. Each tenant sends about 200 emails per day in total, so you’ll need more tenants for higher volumes. Each Frostmailer tenant includes one .com domain and your choice of 25, 50, or 100 inboxes for a flat €30.00 per month.
For example, sending 1,000 emails per day takes about 5 tenants, or 250 inboxes at the recommended 50 per tenant.
How do I calculate my total monthly cost in U.S. dollars?
Start with your daily sending volume and your provider’s sending limits to work out how many mailboxes you need. Multiply that number by the price per mailbox. If your provider charges by tenant, multiply the tenant count by the fee per tenant instead.
Next, add the monthly equivalent of recurring sending-domain costs, including the domains themselves if your provider’s package doesn’t cover them. Add everything together to get your total monthly cost in U.S. dollars.
What contract terms should I confirm before ordering?
Before ordering, check whether domain registration is included or you need to supply or buy a domain separately. Confirm whether reporting, warm-up services, and support channels come with the plan or require monthly add-ons.
Also, check the minimum number of tenants or accounts, the expected provisioning timeline, and daily sending limits per mailbox. Make sure these match your outreach volume.