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Inframail
Flat-fee cold email infrastructure — unlimited Microsoft-backed inboxes, auto DNS, and dedicated IPs at $147/mo, with vendor-graded deliverability claims and a 3-month lock on the done-for-you tier.
$147/mo (Unlimited plan, ~400 mailboxes; yearly saves 30%)
Try Inframail Full review →
Salesforge
Unlimited-sender cold outreach with a bundled AI SDR — the sending layer is one invoice, the mailboxes, credits, and Agent Frank are others.
$40/mo billed annually (Pro plan; ~$48 monthly; 14-day trial)
Try Salesforge Full review →Our pick
Inframail
Best for Agencies and volume senders who want managed mailbox infrastructure at a flat cost — $147/mo Unlimited (~400 mailboxes), yearly saves 30%; done-for-you tier $797/mo with a 3-month lock.
These are two layers of the same stack, and the choice is where you want the invoice: teams that want mailboxes handled — domains, DNS, warm-up-adjacent hygiene, dedicated IPs for a flat fee — pick Inframail at $147/mo and attach any sender. Teams that want sending intelligence — sequences, AI SDR, unified reply inbox — pick Salesforge at $40/mo annual and buy mailboxes from a sibling. Running an agency's entire cold email infra on Inframail's flat fee beats per-inbox DIY (about $3 per Google seat) past roughly 50 inboxes; below that, Salesforge's entry price wins the floor.
Feature comparison
| Feature | Inframail | Salesforge | Winner |
|---|---|---|---|
| Starting price (verified Oct 2026) | $147/mo flat — unlimited inboxes (~400) | $40/mo annual — sending platform; mailboxes extra via siblings | — |
| Core job | Infrastructure: domains, DNS records, inboxes, IPs, monitoring | Sending: sequences, AI SDR, rotation, warm-up, unified inbox | — |
| Mailboxes included | Yes — unlimited Microsoft-backed, auto DNS, 3-click creation | No — connections only; hosting via Mailforge/Primeforge | — |
| Warm-up | Warm-up adjacent tooling; minority of Trustpilot reviewers report warm-up failures | Warmforge warm-up included in the subscription | — |
| Dedicated IPs | Dedicated US IPs + phantom-redirect + blacklist auto-delisting | Dynamic IPs with rotation | — |
| Sender exports | Instantly, Smartlead, ReachInbox | Native — it is the sender | — |
| Review record | Trustpilot 4.5/36, praise for named-human support; G2 unclaimed/0 reviews; self-issued '98% deliverability' grade | Trustpilot 59%/28% split; no-refund terms on renewals | — |
Side-by-side deep dive
What it does best
- Per-inbox economics collapse the category math: unlimited inboxes at a flat $147/mo with no per-inbox fee, where DIY Google Workspace seats run about $3 each.
- The whole setup choreography is automated — domain purchase, SPF/DKIM/DMARC records, redirects, and 3-click mailbox creation, with exports to Instantly, Smartlead, and ReachInbox.
- Deliverability tooling goes beyond hosting: dedicated US IPs, a Phantom-redirect feature that hides domain redirects from ESPs, and blacklist monitoring with auto-delisting requests.
- Trustpilot's 36-review base (4.5/5) consistently praises responsive, personal customer service — named humans, fast replies.
The catch
- The grades are self-issued: 'Best Cold Email Infrastructure. Ever.', '98%+ deliverability', and '5000% faster' carry no methodology, and the G2 profile is unclaimed with zero reviews.
- A minority of Trustpilot reviewers allege warm-up failures — domains that 'land in spam' with blame deflected to Google and Microsoft; the company disputes this in replies.
- Two post-purchase grievances appear on Trustpilot: continued card charges after cancelation, and one reviewer's claim that a refund was used as leverage to remove a critical review.
What it does best
- The unlimited-sender model is real: unlimited mailbox connections on every plan, unlimited LinkedIn senders and unlimited users on Growth — no per-seat math as the team grows.
- Deliverability machinery ships free: unlimited Warmforge warm-up, smart mailbox rotation, dynamic IPs, and Heat Score monitoring built into the subscription.
- Primebox unifies email and LinkedIn replies — including responses sent to different addresses — with AI analysis and sentiment tagging in every tier.
- Agent Frank is a full-loop AI SDR (prospecting, copy, follow-ups, booking) with a co-pilot mode, not just a copy generator.
The catch
- "Unlimited mailboxes" counts connections, not mailboxes — the mailboxes themselves are paid siblings (Mailforge, Primeforge), a split the company's own Trustpilot replies admit was under-explained.
- Getting out has friction: Leadsforge subscriptions can't be canceled from settings, and the terms allow no refund once a renewal has processed.
- Pro caps you at 1 LinkedIn sender — the unlimited-sender promise effectively starts at Growth, $80/mo billed annually.
Pricing showdown
| Plan | Inframail | Salesforge |
|---|---|---|
| Free plan | No | No |
| Pricing type | paid | paid |
| Starting price | $147/mo (Unlimited plan, ~400 mailboxes; yearly saves 30%) | $40/mo billed annually (Pro plan; ~$48 monthly; 14-day trial) |
| Enterprise | Custom | Custom |
Use-case matching
Choose Inframail if...
- Agencies and volume senders who want managed mailbox infrastructure at a flat cost — $147/mo Unlimited (~400 mailboxes)
- yearly saves 30%; done-for-you tier $797/mo with a 3-month lock.
Choose Salesforge if...
- Teams buying the sending layer — Pro $40/mo annual (~$48 monthly) with warm-up and rotation included; mailboxes hosted separately via Mailforge/Primeforge.
Final verdict
Our pick: Inframail
These are two layers of the same stack, and the choice is where you want the invoice: teams that want mailboxes handled — domains, DNS, warm-up-adjacent hygiene, dedicated IPs for a flat fee — pick Inframail at $147/mo and attach any sender. Teams that want sending intelligence — sequences, AI SDR, unified reply inbox — pick Salesforge at $40/mo annual and buy mailboxes from a sibling. Running an agency's entire cold email infra on Inframail's flat fee beats per-inbox DIY (about $3 per Google seat) past roughly 50 inboxes; below that, Salesforge's entry price wins the floor.
Full comparison
Method
Researched from both vendors' pricing pages, docs, and review profiles, verified 2026-10-26/27. Research-only — no domains were purchased or warmed on either platform. The DIY cost benchmark ($3/seat Google Workspace) comes from Inframail's own comparison copy.
The catch on each side
Inframail's catch is self-graded homework. The grades — '98%+ deliverability', '5000% faster' — are self-issued with no methodology, and G2 is unclaimed with zero reviews. A minority of Trustpilot reviewers allege warm-up failures with blame deflected to Google and Microsoft; two post-purchase grievances appear (continued charges after cancellation; one allegation that a refund was offered in exchange for removing a critical review). The done-for-you tier locks 3 months at $797/mo.
Salesforge's catch is the composite bill. The $40/mo headline buys sending, not mailboxes — the Forge stack prices Mailforge/Primeforge separately, so the true cost is sender + infrastructure + (optionally) Leadsforge data. Leadsforge subscriptions can't be cancelled from settings, renewals are non-refundable once processed, and Trustpilot's 28% one-star share includes the Primeforge incident where paid domains vanished from a dashboard.
When to use both
This is the stack pairing, not a rivalry: Inframail as the flat-fee infrastructure layer (domains, inboxes, IPs, monitoring) feeding a sending platform — Salesforge on the sending side if you want warm-up and the AI SDR bundled, Instantly/Smartlead if you prefer the tools Inframail exports to natively. One Inframail $147 invoice typically outlives several sending-tool trials underneath it.
The one-liner
Inframail is where mailboxes live; Salesforge is where sequences run — buy the layer your bottleneck is actually on.
Full breakdowns: Inframail · Salesforge · the full build: the cold email stack for agencies · also compare HeyReach vs Salesforge. Long-form decision guide: Inframail vs Salesforge.
Commission note: Inframail pays 18% and Salesforge 15% recurring per network data verified 2026-10-27. Figures above are from vendor pricing pages verified 2026-10-26/27. We also recommend tools with no affiliate program when they're the best fit.
Frequently asked questions
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