Infraforge Pricing: Line-Item Economics of Dedicated-IP SMTP
Infraforge prices each isolation component separately: the mailbox, the dedicated IP, the SSL certificate, the domain masking. Here is how the bill assembles itself across volume tiers.
Bottom line
Infraforge's pricing model is the most unbundled in the cold email infrastructure category. The per-mailbox SMTP rate (between $3 and $4 depending on volume) is one line. The dedicated IP is its own monthly fee ($99).
SSL and domain masking is metered per domain ($2 each). API access and the masterbox are bundled into the per-mailbox rate. Multi-IP provisioning is bundled.
Pre-warmed domains are bundled. The result is a pricing surface with one base unit and three add-on dials, which is unusual at this price point. Most competitors pick either flat-per-mailbox or contract-based pricing; Infraforge picks line-item, which gives compliance-led teams the granular control to specify exactly what isolation looks like at their volume.
The same line-item structure makes the bill harder to predict for buyers who have not modeled their domain count yet.
Infraforge Plans
| Plan | Price | What you get | Watch out for |
|---|---|---|---|
| SMTP Mailbox rate varies by volume bracket | $3-$4/mailbox/mo |
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| Dedicated IP Block flat monthly per IP block | $99/mo |
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| SSL + Domain Masking per domain, per month | $2/domain/mo |
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Infraforge bill at typical fleet configurations
| Usage scenario | Monthly cost | Notes |
|---|---|---|
| 25 mailboxes, 5 domains | ~$197/mo | 25 x $3.50 + $99 IP + 5 x $2 masking. Per-mailbox cost effectively $7.88 once you include the fixed IP fee, which is why small fleets feel expensive. |
| 50 mailboxes, 10 domains | ~$294/mo | 50 x $3.50 + $99 IP + 10 x $2 masking. Per-mailbox cost falls to $5.88 because the IP fee amortizes across more mailboxes. |
| 100 mailboxes, 20 domains | ~$489/mo | 100 x $3.50 + $99 IP + 20 x $2 masking. Per-mailbox cost stabilizes around $4.89. This is the size where Infraforge's line-item pricing becomes competitive. |
| 200 mailboxes, 40 domains | ~$879/mo | 200 x $3.50 + $99 IP + 40 x $2 masking. Per-mailbox cost drops to $4.40. Volume bracket may also drop the per-mailbox rate to $3 at this scale; confirm with sales. |
| Agency with 3 client IP isolations | ~$687/mo for 100 mailboxes | 100 x $3.50 + 3 x $99 IPs + 20 x $2 masking. Three IP blocks for separate client reputation isolation pushes the bill 40 percent higher than the single-IP equivalent. |
How the four-line-item pricing actually assembles
Infraforge's bill is a sum of four components: mailboxes ($3-$4 each), dedicated IP blocks ($99 each), SSL/masking ($2 per domain), and optional add-ons for multi-IP allocation. The structure rewards teams who understand exactly what they need at each level. Mailboxes scale linearly with your sending fleet.
IP blocks scale with how granular your reputation isolation needs to be (one block covers everything; multiple blocks separate client books or campaign cohorts). Domain SSL scales with how many sending domains you operate, which is typically 1 domain per 5 to 10 mailboxes for reputation diversification. The most common bill mistake is provisioning more domains than you need because the $2/domain fee feels small.
At 50 domains, that line alone is $100/mo, equal to a full IP block.
Key takeaways
- Mailboxes scale with fleet size, $3-$4 each
- IP blocks scale with isolation granularity, $99 each
- SSL/masking scales with domain count, $2 each
- Multi-IP provisioning is bundled into the IP block, not separate
Where the Infraforge bill breaks predictably
Three patterns where the bill diverges from a buyer's initial estimate: First, at small fleets (under 25 mailboxes), the $99 IP fee dominates the bill. Effective per-mailbox cost is two to three times the headline rate because the fixed fee amortizes over too few mailboxes. Teams in this band often complain about price; the fix is either scaling up or accepting that small SMTP fleets are not the target market.
Second, at multi-client agencies, the IP block multiplication can surprise. Three separate client reputations need three IP blocks = $297/mo just for IPs. The agency model on Infraforge is more expensive than the in-house model at equivalent mailbox count.
Third, at heavy-domain-rotation fleets, the masking fee compounds. Teams that rotate domains aggressively for cold email safety (a common pattern with anti-spam measures) can have 40+ domains, pushing masking past $80/mo.
Key takeaways
- Small fleets pay 2-3x effective per-mailbox cost
- Multi-client agencies pay per-client IP block stacks
- High-domain-rotation fleets pay heavy masking fees
- Mid-size fleets at 50-150 mailboxes hit the sweet spot
How Infraforge fits in the Salesforge ecosystem
Infraforge is the dedicated-IP tier of the Salesforge infrastructure stack. Mailforge is the shared-IP sibling at $2-$3 per mailbox. Buyers in the Salesforge ecosystem treat the two as the same product with different isolation guarantees, not as separate vendors.
The practical implication for pricing: if you start on Mailforge and grow into Infraforge, the migration is in-account (same login, same masterbox, same DNS setup). You do not re-onboard. The Mailforge-to-Infraforge upgrade is essentially adding the $99 IP block fee and moving mailboxes to the dedicated-IP fabric.
The Salesforge ecosystem assumption matters because it shapes who Infraforge is sized for. The pricing is aggressive for teams already invested in Salesforge sequences. It is less competitive for teams shopping cold and comparing across vendor families.
Key takeaways
- Infraforge is the dedicated-IP tier of the Salesforge stack
- Mailforge to Infraforge is an in-account upgrade, not a migration
- Pricing assumes you are already in the Salesforge ecosystem
- Cold buyers comparing across vendors see less of the advantage
Why compliance-led teams prefer the line-item structure
For most cold email buyers, flat per-mailbox pricing is easier to budget. Compliance-led buyers (regulated industries, financial services, healthcare-adjacent SaaS) often prefer line-item structures because they can audit exactly what isolation is included at what cost. The line items on Infraforge map cleanly to compliance requirements: dedicated IP (one tenant per IP for SPF auditability), SSL per domain (TLS auditability), multi-IP provisioning (cross-client isolation for B2B2B agencies), per-mailbox pre-warming (reputation history auditability).
The trade-off is that compliance buyers also pay more per unit because they need every component. Cost-conscious buyers usually find the same isolation level cheaper inside a bundled product like InboxKit. Choose by which side of the compliance/cost axis you operate from.
Key takeaways
- Line items map to compliance audit requirements
- Dedicated IP, SSL, masking, and warmup history are each verifiable
- Compliance buyers pay more but get auditable isolation
- Cost-conscious buyers prefer bundled-IP alternatives
Keep reading
Got questions? We've got answers.
Roughly $489/mo at typical configuration: 100 mailboxes at $3.50 each = $350, plus $99 for the dedicated IP block, plus $40 for SSL/masking on 20 domains. Per-mailbox effective cost is $4.89. The exact rate depends on your volume bracket; confirm with sales before sizing your bill.
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