Short answer: In an antispam reseller program you offer a ready-made spam filtering gateway to your customers as your own service. You add the customer's domain to your reseller panel and point its MX records to the gateway; spam, viruses and phishing are stopped before they reach the customer's server. You set your own price and keep the margin over the per-domain fee.
Why resell spam filtering?
Spam is one of the most common support topics for anyone selling hosting or business email: "my mailbox is full", "we got a fake invoice", "finance clicked a phishing link". Server-side filters such as SpamAssassin catch basic spam but don't offer central quarantine, phishing and malicious-attachment protection, per-user lists or reporting.
- Recurring revenue: spam filtering renews every year; a domain you set up once keeps paying.
- Fewer support tickets: spam complaints and "where is my email?" questions are answered from the quarantine.
- Easy upsell: a security add-on your existing hosting and email customers immediately understand.
- No infrastructure to run: no servers, antivirus licences or blocklist and rule maintenance.
How it works
- Apply and get approved: after approval, commercial terms are shared and your reseller panel is opened.
- Add customer domains: in the panel, by CSV import or through the API, with the server mail should be delivered to.
- Point MX records: the customer's MX records are replaced with the two Spambil gateway records shown in your reseller panel.
- Protection starts: every incoming message is scanned; clean mail goes to the customer's existing server, suspicious mail waits in quarantine.
- You stay in control: quarantine, allow/block lists and statistics for all your customers in one panel.
No change is needed on the customer's server, mail clients or outgoing mail. More on the technology: what is an email security gateway?
Who can become a reseller?
- Hosting providers: as an add-on to shared, reseller or business email plans.
- MSPs and IT service companies: to manage the mail security of the businesses you support from one panel.
- Web agencies: as a yearly security service for clients whose websites and domains you manage.
- Business email providers: to add a strong filtering layer in front of your own mail platform.
How pricing works
Spambil reseller pricing is per domain, per year, with unlimited mailboxes per domain. As your number of active domains grows, newly added domains get lower tiers, and each domain renews at the price it was added at.
This is predictable for customers with many mailboxes: a 5-mailbox and an 80-mailbox customer cost you the same, so you can build your own packages (for example by mailbox count). Pricing and billing options are shared after your application is approved and are always visible in your reseller panel.
What you get: reseller panel and API
| Feature | What it's for |
|---|---|
| REST API | Add and cancel domains, check MX and mail host, manage quarantine, lists and statistics with an API key. |
| Bulk import | Add dozens of domains from a CSV file or a single API call. |
| Team access | Give your support staff their own logins; no shared passwords. |
| Central quarantine | See and release mail for all customer domains in one place. |
| Stats and CSV export | Report the last 30 days of mail, spam and virus counts to your customers. |
Full endpoint list: reseller API docs. Connecting to WHMCS: WHMCS spam filter integration.
Run a hosting company, MSP or IT service? Apply for the Spambil reseller program; applications are usually reviewed within 1–2 business days.
Frequently asked questions
Do I need my own infrastructure?
No. Spambil runs the gateway; you add the customer's domain and point its MX records. Optionally, connect your own systems through the API.
Will my customers see the Spambil name?
Your customers receive no Spambil-branded emails; you sell and invoice the service as your own. Technically, the gateway hostnames are visible in their MX records.
Is there a mailbox limit?
No. Pricing is per domain; mailboxes per domain are unlimited.
Why aren't reseller prices on the website?
Commercial terms depend on your business model and are shared after the application is reviewed. After approval, the current price tiers are always visible in your panel.