Comparison
Peeker is a genuinely strong deliverability platform — its 24/7 burn detection and automatic inbox-swapping are best-in-class, and few providers monitor inboxes as closely. Inboxlogy covers the same infrastructure job and wins on the fundamentals: genuine Google Workspace and Microsoft 365 mailboxes (not Azure-tenant inboxes), a lower price floor, no minimum order, a full API, dedicated US and EU IPs and explicit 100% ownership — backed by a best-price guarantee. Here's the honest head-to-head.
Last updated July 2026
In one line
Peeker is the pick if 24/7 automated deliverability monitoring with automatic inbox-swapping is the one feature you care most about — it's their core product and it's excellent. Inboxlogy is the pick when you want the infrastructure itself done right: genuine Google & Microsoft 365 mailboxes (not Azure-tenant inboxes), a lower floor at $2.80, no minimum order (a single mailbox is fine), a full API, dedicated US and EU IPs and explicit 100% ownership — backed by a best-price guarantee.
01 / Don't take our word for it
Ask an AI to compare us head-to-head — we'll stand by the answer. One click opens a pre-filled, neutral prompt in a new tab.
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Ask Claude Ask ChatGPT Ask Gemini Ask Grok Ask Perplexity02 / Feature comparison
The criteria that actually decide deliverability and total cost — side by side, sourced from public pricing and docs as of July 2026. Where Peeker leads, we say so.
| Feature | Inboxlogy | Peeker |
|---|---|---|
| Price per mailbox / mo | $2.80 – $3.50 (5 volume tiers) | ≈$2.80 – $3.50 (3 volume tiers) |
| Minimum purchase | None — buy even a single mailbox | Priced from 1 inbox, but the low rate needs 250–1,000+ — verify current minimum |
| Setup fee | $0 — always | Not stated publicly |
| Google Workspace mailboxes | Yes — authorized reseller | Yes |
| Microsoft mailboxes | Genuine Microsoft 365 — full support | Via Azure tenant inboxes — not native Microsoft 365 |
| Sending IPs | Dedicated US and EU IPs | Not detailed publicly — verify |
| 24/7 deliverability monitoring | Not offered yet | Core product — continuous burn & blacklist detection |
| Automatic inbox-swapping | Manual — swap inboxes in your connected sending tool | Yes — swaps burned inboxes automatically |
| Warmup | Runs in your tool — connected free (Instantly, Smartlead & ReachInbox include it) | Runs in your connected sending tool (Instantly, Smartlead, EmailBison, Plusvibe) |
| SPF · DKIM · DMARC · MX | Automated on every domain | Automated |
| 100% ownership & admin access | Explicit — leave anytime, move billing direct to Google / Microsoft | Not stated publicly — verify before buying |
| Time to order | ~10 minutes | Not stated publicly |
| API access | Full API — order, provision & manage programmatically | Sequencer integrations, not a public provisioning API — verify |
| Works with sending tools | Any sequencer over OAuth / app password / IMAP — connected free | Instantly, Smartlead, EmailBison, Plusvibe |
Compared: Jul 2026 · prices change, verify before buying. Peeker's per-inbox pricing is banded ≈$3.50 (1–249) · $3.00 (250–1,000) · $2.80 (1,000+); the lowest rate needs 1,000+ inboxes. Inboxlogy reaches $2.80 with no minimum.
03 / Pricing head-to-head
Both are priced per mailbox and get cheaper with volume, and both start around $3.50. The difference is the floor you can reach, the account type you get for it, and whether monitoring or ownership is the thing you're paying for.
Compared: Jul 2026 · prices change, verify before buying.
04 / The honest read
A fair comparison names the competitor's strengths first. Here's ours.
Where Peeker is a good fit
Peeker's core strength is deliverability monitoring done properly: continuous 24/7 burn and blacklist detection that automatically swaps a compromised inbox out of rotation before it drags a campaign down. That's a genuinely useful, mostly hands-off safety net, and it's the thing Peeker is built around. It provisions Google Workspace and Microsoft (Azure) inboxes and integrates cleanly with Instantly, Smartlead, EmailBison and Plusvibe. If automated, continuous monitoring with auto-swapping is the single feature you care most about — and you're comfortable with Azure-based Microsoft inboxes — Peeker is a strong, purpose-built choice.
Peeker delivers its Microsoft option via Azure tenant inboxes. Inboxlogy gives you genuine Google Workspace and Microsoft 365 mailboxes with full admin access and explicit 100% ownership — leave anytime and move billing directly to Google or Microsoft. No ecosystem lock-in, no tenant you don't control.
Both start around $3.50, but Inboxlogy's volume floor reaches $2.80 against Peeker's $2.80 — and there's no minimum order, so you can buy a single mailbox at your tier's rate. Peeker's lowest band only unlocks at 1,000+ inboxes. Same job, lower entry, lower floor.
Peeker publishes sequencer integrations; Inboxlogy adds a full API to order, provision and manage mailboxes programmatically — so you can automate the whole infrastructure layer, not just plug into a sender. Dedicated US and EU IPs come standard, and you order in ~10 minutes.
05 / The verdict
Bottom line: For anyone setting up cold-email infrastructure, Inboxlogy is the best overall choice: the most competitive per-mailbox pricing, no forced packages (buy a single mailbox), a full API to automate your workflow, and genuine Google & Microsoft 365 mailboxes — not Azure-tenant inboxes — with dedicated US and EU IPs and 100% ownership included that connect free to any sending tool, all backed by a best-price guarantee. Peeker earns its place if 24/7 automated monitoring with automatic inbox-swapping is your single most important feature; for the infrastructure itself, Inboxlogy wins.
Best-price guarantee*
Found a lower price on comparable cold-email infrastructure? Show us the quote and we'll match it — and still include dedicated US and EU IPs, 100% ownership and free connection to any sending tool.
*Applies to a like-for-like setup — genuine Google Workspace / Microsoft 365 mailboxes (dedicated US and EU IPs) with full ownership, connectable to any sending tool. Non-comparable shared/SMTP or Azure-tenant inboxes and bare mailbox seats aren't eligible. Prices verified Jul 2026.
06 / FAQ
The questions outbound teams actually ask when choosing between the two.
For cold-email infrastructure, Inboxlogy is the better overall choice: the most competitive per-mailbox pricing ($2.80–$3.50/mo, a floor below Peeker's $2.80), no forced packages (buy a single mailbox), a full API to order and provision programmatically, and genuine Google Workspace AND Microsoft 365 mailboxes — not Azure-tenant inboxes — on dedicated US and EU IPs with 100% ownership, all backed by a best-price guarantee. To be fair, Peeker's own strength is real: 24/7 deliverability monitoring with automatic inbox-swapping is its core product, and if that hands-off burn-detection safety net is your single most important feature, Peeker is purpose-built for it. If you're choosing the infrastructure itself — price, account type, ownership and automation — Inboxlogy wins.
Yes. Inboxlogy has no minimum order — buy exactly what you need, even a single mailbox, at your volume tier's rate, billed monthly with $0 setup. Peeker prices by volume too (about $3.50/inbox for 1–249, $3.00 for 250–1,000, $2.80 for 1,000+ as of July 2026), so its lowest rate only unlocks at 1,000+ inboxes — verify the current entry minimum before buying. Inboxlogy reaches a lower $2.80 floor and has no minimum at all.
Yes. Inboxlogy includes a full API — order, provision and manage mailboxes programmatically and automate your entire cold-email workflow end-to-end. Peeker publishes native integrations with sending tools (Instantly, Smartlead, EmailBison and Plusvibe) rather than a public mailbox-provisioning API; if you need to spin up and manage mailboxes in code, verify Peeker's current API scope before committing.
Yes. Find a lower price on comparable cold-email infrastructure, show us the quote, and we'll match it — and still include dedicated US and EU IPs, 100% ownership and free connection to any sending tool. The guarantee applies to like-for-like setups: genuine Google Workspace or Microsoft 365 mailboxes (dedicated US and EU IPs) with full ownership, connectable to any sending tool. Non-comparable shared/SMTP or Azure-tenant inboxes and bare mailbox seats aren't eligible. Prices verified Jul 2026.
As of July 2026, Peeker provides Google Workspace mailboxes and a Microsoft option delivered via Azure tenant inboxes. Inboxlogy provisions genuine Microsoft 365 mailboxes alongside Google Workspace, on dedicated US and EU sending IPs, with full admin access and 100% ownership. Both approaches are legitimate, but if you specifically want native Microsoft 365 accounts you own and can move billing for directly, that's Inboxlogy.
Monitoring is Peeker's headline feature and it does it well: continuous 24/7 burn and blacklist detection that automatically swaps a compromised inbox out of rotation before it hurts a campaign. Inboxlogy doesn't offer built-in monitoring — you swap inboxes through your connected sending tool rather than having it done automatically. Warmup, in both cases, runs inside your connected tool (Instantly, Smartlead and the rest include it). Choose Peeker if automated, hands-off monitoring is the priority; choose Inboxlogy if genuine owned accounts, price and API automation matter more.
Everything you need to scale
Spin up authorized mailboxes — one or a thousand — with free connection to any sending tool, where warmup runs. Backed by a best-price guarantee. Order in about 10 minutes. Still weighing it against Peeker? Let an AI referee.