One wallet, every feature. Each plan grants a monthly pool of SieveGuard Credits that you spend on detection, blacklist checks, inbox-placement tests, verification, and phone validation — at the per-action cost shown below.
Bot Detection + Verification only. Every /v1/emails call runs both layers as one coupled action against your credit wallet.
Prices shown excl. VAT. EU businesses with a valid VAT ID pay no VAT (reverse charge). Non-EU customers pay no VAT. Consumers pay VAT at their country's rate — added at checkout.
Every billable action draws from one credit pool. Bot Anomaly Detection and Email Verification run together on every signup screening at a combined per-call weight; blacklist checks, inbox placement, phone validation, and domain health each add their own weight when you use them. Whatever your monthly workload shape, the same wallet pays for all of it.
Example. 30,000 credits buys you any single one of the following workloads (not additive — pick your mix):
Need more mid-month? One-shot credit packs top up your wallet without changing your subscription — see the Add-ons section below.
| Action | Credits |
|---|---|
Bot Anomaly Detection + Email Verification per signup screening — always coupled | 5 |
Domain Health per domain | 1 |
Blacklist check per domain | 15 |
Inbox placement test per test | 150 |
Phone verification per lookup | 3 |
Every action is billed in SieveGuard Credits — one wallet, one currency. Cache hits on repeat lookups are free within their TTL. The euro cost per credit depends on the plan or credit pack you buy — see the plan cards above for exact rates.
With the credit wallet on, detection, verification, blacklist checks, inbox placement, phone lookups and domain health all draw from the same monthly credit pool — see How credits work above. Warmup is the only feature still sold as a discrete add-on because it's billed per warming mailbox, not per action. Pick a tier when you connect each mailbox; it's Stripe-billed monthly at the tier's price, and each addition is charged immediately (removals credit your next invoice).
Auto-warm your sending mailboxes (Gmail / Microsoft / SMTP). Pick a tier per mailbox — connect as many as you need and our partner network builds sender reputation via send/reply loops. Per-ESP reputation 0-100, per-mailbox health-check; higher tiers add your own templates, topic + language control and scheduling. The natural complement to Inbox Placement: diagnose where mail lands, then fix it. IP-level warmup is on our near-term roadmap.
per mailbox · Stripe-billed · immediate on new mailbox
SPF / DKIM / DMARC / MX checker. Every domain you ingest gets a 0–100 score that surfaces as a record badge — so weak senders get flagged before they cause damage. Each fresh lookup draws from your credit wallet at the weight shown in the cost table above; results are cached so repeat lookups within the TTL are free. Pro plans grant enough monthly credits that typical workloads never notice the weight.
Deep dive on Domain Health →Bot Anomaly Detection + Email Verification is the core product — one always-coupled action every /v1/emails call runs, on every tier. Pro plans additionally unlock blacklist, inbox placement, phone, and domain health from the same credit wallet; Basic plans keep the wallet gated to the coupled screening action only. Rows marked Wallet-metered draw from the same monthly credit pool at the per-action weights shown in the per-action cost table above.
| Feature | Basic | Pro |
|---|---|---|
| Bot Anomaly Detection + Email Verification Merged into one always-coupled action. Every /v1/emails call runs near-duplicate clustering, structural risk scoring, AND the authoritative mailbox-level check (deliverable / invalid / disposable / spamtrap). Draws from your credit wallet at the combined per-call weight (see per-action cost table). | ✓ Wallet-metered | ✓ Wallet-metered |
| Risk score + reasons 0–100 score per address with human-readable reasons. Included in every screening — no separate charge. | ✓ | ✓ |
| Manual review queue Records that score in the review band sit pending until a human accepts/declines. | ✓ | ✓ |
| Spamtrap detection Bundled inside the coupled screening action — no extra charge. Spamtrap addresses harm sender reputation; they're forced to review regardless of other signals. | ✓ | ✓ |
| Disposable-address flagging Both tiers use the same authoritative disposable-domain list surfaced by the mailbox verifier (kept fresh). | Provider-grade | Provider-grade |
| Blacklist checks 50+ industry blacklists per domain. Paid from your credit wallet at the blacklist weight. | — | ✓ Wallet-metered |
| Inbox-placement tests Send-to-seed-list tests reporting inbox vs spam vs missing per ESP. Paid from your credit wallet at the inbox-placement weight. | — | ✓ Wallet-metered |
| Phone validation Country / carrier / line-type lookup per number. Paid from your credit wallet at the phone-validation weight. | — | ✓ Wallet-metered |
| Domain Health (SPF · DKIM · DMARC · MX) Per-domain deliverability posture. Paid from your credit wallet at the domain-health weight (typically the lightest per-action cost). | — | ✓ Wallet-metered |
| Warmup mailboxes Auto-warm sending mailboxes. Pro-only, billed per-mailbox by tier OUTSIDE the credit wallet. Pro 50k / 100k include 2–3 Starter mailboxes for free. Basic plans have no warmup access; upgrade to Pro to unlock. | — | Bundle + per-mailbox |
| Credit pack top-up One-shot Stripe purchase that adds credits to your wallet. Never expires. Credit packs EXTEND capacity but do NOT unlock feature gates — a Basic tenant with a pack still can't run blacklist / IP / phone / DH. | Extends screening + verification | Extends full-feature wallet |
| Outbound webhooks (emails.scored, email.reviewed, email.duplicate_detected) | ✓ | ✓ |
| Slack / Email / Intercom alerts | ✓ | ✓ |
| Real-time updates (SSE) | ✓ | ✓ |
| REST API + multiple keys | ✓ | ✓ |
| Audit log + API activity log | ✓ | ✓ |
One pool, every feature. Each billable action — detection, verification, blacklist check, inbox-placement test, phone lookup — draws credits from your wallet at the per-action cost shown on the pricing page. Mix and match against your monthly volume.
402 Payment Required with the remaining-balance number, so your client code can prompt the user to top up. Detection, verification, and the rest all use the same error shape./v1/emails) is the cheapest paid action, Domain Health is a fair-share guard weight, Phone Validation sits next, Blacklist Checks are heavier, and Inbox Placement is the priciest single call because it fires real mail to real seed mailboxes.['detection'] — credits can only be spent on bot/anomaly detection. Upgrade to any Pro tier (same headline credit count, ~3× the pool size to cover the wider feature surface) to unlock verification, blacklist, inbox placement, and phone validation.Higher allowances and annual commitments are available — start free and reach out from the console.