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SpamDuster Cloud plans and how to choose

SpamDuster Cloud comes in seven plans, from Micro to Enterprise Plus, which differ in the size of your dedicated server and so in how much mail it handles. Prices are monthly or yearly (10 months' price for 12), slightly higher for servers in Jakarta and São Paulo, with optional backups. Each plan includes a number of domains and email addresses on one gateway (mail) server; domain expansion packs add more. Micro does not include antivirus scanning.

The SpamDuster Cloud plans

Plan Server Domains included Addresses included Monthly Yearly
Micro 1 CPU core, 1 GB RAM, 25 GB SSD 100 1,000 $19 $190
Small 1 CPU core, 2 GB RAM, 50 GB SSD 250 2,500 $35 $350
Standard 2 CPU cores, 4 GB RAM, 80 GB SSD 500 5,000 $70 $700
Professional 4 CPU cores, 8 GB RAM, 160 GB SSD 1,000 10,000 $120 $1,200
Business 6 CPU cores, 16 GB RAM, 320 GB SSD 2,500 25,000 $200 $2,000
Enterprise 8 CPU cores, 32 GB RAM, 640 GB SSD 5,000 50,000 $360 $3,600
Enterprise Plus 16 CPU cores, 64 GB RAM, 1,280 GB SSD 10,000 100,000 $660 $6,600

These prices apply in every region except Jakarta and São Paulo (see below). Each price is one charge that covers your dedicated server and SpamDuster together.

The Micro plan does not include antivirus scanning. Every other plan does.

The included domains and addresses are your plan's allowance, not a promise of capacity. How much mail a server handles comfortably depends on how it is used: the volume and size of the mail, how many attachments need scanning, and how busy each domain is. A server carrying heavy mail may need a larger plan before it reaches its allowance, while a quiet one may never come close. You can move to a larger plan when you need to (see Changing plan later).

Paying yearly

Paying yearly costs the same as 10 monthly payments of the plan (2 months free). This applies to the plan only, not to backups: a year of backups costs 12 times the monthly backup price.

Prices in Jakarta and São Paulo

A server in Jakarta or São Paulo costs more:

Plan Jakarta monthly Jakarta yearly São Paulo monthly São Paulo yearly
Micro $23 $230 $27 $270
Small $42 $420 $49 $490
Standard $84 $840 $98 $980
Professional $144 $1,440 $168 $1,680
Business $240 $2,400 $280 $2,800
Enterprise $432 $4,320 $504 $5,040
Enterprise Plus $792 $7,920 $924 $9,240

Backups

Backups of your server are an optional add-on, charged per month on top of the plan:

Plan Backups per month In Jakarta In São Paulo
Micro $2.50 $3.00 $3.50
Small $3 $4 $5
Standard $6 $8 $9
Professional $12 $15 $17
Business $24 $29 $34
Enterprise $48 $58 $68
Enterprise Plus $96 $116 $135

Domain expansion packs and automatic capacity

A domain expansion pack adds the same number of domains and email addresses again as your plan includes, at the same price in every region:

Pack for plan Adds Monthly Yearly
Micro +100 domains, +1,000 addresses $12 $120
Small +250 domains, +2,500 addresses $25 $250
Standard +500 domains, +5,000 addresses $35 $350
Professional +1,000 domains, +10,000 addresses $55 $550
Business +2,500 domains, +25,000 addresses $120 $1,200
Enterprise +5,000 domains, +50,000 addresses $220 $2,200
Enterprise Plus +10,000 domains, +100,000 addresses $400 $4,000

With Add capacity automatically switched on, which is the default, SpamDuster adds a pack when your server goes over the domains or addresses your plan includes. Each pack added is emailed to you and invoiced pro-rata. You can switch the option off at any time, and change it later.

Domains are never refused: a domain you add is always served, and you are shown when you are over what your plan includes. Email addresses have a limit. If a server is at its address limit and no pack can be added, mail for a new address is asked to try again later: sending servers retry, so mail is not lost. Addresses that received mail in the last 30 days always get their mail.

What every plan includes

Every SpamDuster Cloud plan includes:

  • your own dedicated SpamDuster server, deployed, updated and monitored by us;
  • the domains and email addresses shown for your plan, with one gateway (mail) server, and domain expansion packs for more;
  • spam and phishing filtering, and virus scanning on every plan except Micro;
  • the management console;
  • control panel integration for cPanel & WHM, Plesk on Linux or Windows, and DirectAdmin;
  • automatic, signed updates.

See What SpamDuster Cloud includes.

How to choose a plan

Choose by how much mail you receive, not by how many users or domains you have. A larger server processes more messages at the same time and has more room for the filter's work. If you are unsure, start smaller: you can move to a larger plan later. If you need antivirus scanning, choose Small or larger.

Changing plan later

You can move a SpamDuster Cloud plan to a larger plan as your mail volume grows. Contact us and we move your filter to the bigger server. See Change to a different plan.

A SpamDuster Cloud plan cannot be moved to a smaller plan, because a server's disk cannot be made smaller. That is why it is fine to start with a smaller plan and move up when you need to.

How to buy

Order SpamDuster Cloud on its order page in the PortWall billing portal: Order SpamDuster Cloud. Choose your plan there; plans for Jakarta and São Paulo are listed separately. For how ordering, payment and your account work, see Place an order.

Updated 2026-11-01Need help? Open a ticket in the billing portal.