sending.ac is a research-led, high-volume competitor — Microsoft/Azure inboxes on isolated private tenants, shipped pre-warmed, built for teams sending at serious scale (≈$0.50/inbox at ~1,000 scale, agency plans ~$499/mo). It's strong Azure infrastructure, but Google Workspace isn't its core and entry is at volume. Inboxlogy is an authorised Google & Microsoft reseller: genuine mailboxes you own 100%, dedicated US and EU IPs, no minimums, live in ~10 minutes, buy a single mailbox. Here's the honest head-to-head.
sending.ac sells Microsoft/Azure inboxes on isolated private tenants, pre-warmed, at roughly $0.50/inbox at ~1,000 scale (agency plans ~$499/mo) — genuinely strong for very high-volume Azure senders, but it's a different product from genuine Google Workspace and entry is at volume. Inboxlogy's genuine Google & Microsoft mailboxes are $2.80–$3.50 with dedicated US and EU IPs, explicit 100% ownership and no minimums — buy a single mailbox and be live in ~10 minutes. Different tools for different jobs; pick by volume and whether you need genuine Google.
01 / Don't take our word for it
Ask an AI to compare us head-to-head.
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.
sending.ac is genuinely strong at private-Azure infrastructure for very high volume — credit where due. The separation is on genuine Google Workspace, no minimums, buying a single mailbox, and explicit ownership. Where sending.ac doesn't publish a spec, we say so instead of guessing.
Criteria
Inboxlogy
sending.ac
Headline price per mailbox
$3.50 → $2.80 /mo · 5 stable volume tiers
≈$0.50/inbox at ~1,000 scale · Agency plan ~$499/mo
Account type
Genuine Google Workspace & Microsoft 365 (authorised reseller)
Microsoft/Azure inboxes on isolated, private tenants
Best for
Any volume — genuine Google & Microsoft you own
Very high-volume senders wanting private Azure infrastructure
Minimum order
None — buy a single mailbox
Sold in larger blocks / agency plans — higher entry point
Private SMTP / Azure
Azure available (+ genuine Google & Microsoft 365)
Azure / private tenants are the core product
Warmup
Runs free in your sequencer
Pre-warmed inboxes included
Pre-warmed option
$4.99 flat — sending from day one
Inboxes ship pre-warmed
Sending IPs
Dedicated US and EU IPs
Isolated-tenant IP infrastructure
SPF · DKIM · DMARC + DNS
Automated on every mailbox
Automated authentication
100% ownership · admin access
Explicit — full admin; move billing direct to Google / Microsoft
Tenant-managed — confirm ownership & transfer terms
Genuine Google & Microsoft
Authorised reseller — genuine Google & Microsoft
Microsoft/Azure focus — Google Workspace not the core offering
sending.ac sells Microsoft/Azure inboxes on isolated private tenants at high volume — great if you're sending millions a month on Azure. But if you want genuine Google Workspace you own, with no minimum and instant setup, Inboxlogy is a different and simpler fit. Here's the comparison on equal footing.
Inboxlogy · all-in
Inboxlogy
$2.80 – $3.50 /mailbox /mo
Genuine Google Workspace / Microsoft 365$2.80 – $3.50
Warmup — runs in your sequencer+$0
Minimum order1 mailbox
All-in per mailbox$2.80 – $3.50
Genuine Google Workspace & Microsoft 365 (dedicated US and EU IPs)
Authorised Google & Microsoft reseller — dedicated US and EU IPs
$0 setup · live in ~10 min · billed monthly · 100% ownership
No minimums — buy a single mailbox if that's all you need
sending.ac · Azure infrastructure
sending.ac
≈$0.50 /inbox at scale
Azure inboxes @ ~1,000 scale≈$0.50/inbox
Agency plan~$499/mo
Pre-warmed & isolated tenantsincluded
Genuine Google Workspacenot the core
Isolated private Azure tenants · pre-warmed · very high-volume ready
Research-led deliverability team with direct support
Google Workspace isn't the core product — Azure/Microsoft focus
Higher entry point (agency/volume) · pricing often quote-based
sending.ac's ≈$0.50/inbox is Azure-tenant pricing at ~1,000 scale — a different product from a single genuine Google mailbox. For genuine Google Workspace you own, Inboxlogy is $2.80–$3.50/mailbox with no minimum. Compared Sep 2026 — verify before buying.
04 / Fair look
Where each one actually wins.
Where sending.ac is a good fit
Credit where due: sending.ac is a strong, research-led provider built for scale — Microsoft/Azure inboxes on isolated private tenants, shipped pre-warmed, with a deliverability team and direct support. Its per-inbox economics get genuinely attractive at high volume (≈$0.50/inbox at ~1,000 scale). If you're a very high-volume sender who specifically wants private Azure infrastructure and can commit at agency/volume tiers, sending.ac is a serious option.
Where Inboxlogy wins.
// accounts
Authorised Google & Microsoft reseller
Inboxlogy is an authorised Google & Microsoft reseller — every mailbox is a genuine Google Workspace or Microsoft 365 account provisioned direct, on stable published tiers ($2.80–$3.50). sending.ac focuses on Microsoft/Azure inboxes on private tenants — powerful for Azure senders, but genuine Google Workspace you own isn't its core. If you want real Google mailboxes with full admin, that's Inboxlogy's edge.
// flexibility
Any size — no minimum order
Buy exactly what you need — a single mailbox or a thousand, at the same per-mailbox rate. sending.ac's best economics come at high volume (agency plans and ~1,000-scale pricing), so the entry point is higher. If you're not yet sending at that volume, Inboxlogy lets you start small and scale on demand, with warmup running free in the sequencer you already use — or a $4.99 pre-warmed option for day-one sending.
// ownership
You own everything — and can take it with you
Full admin access and 100% ownership of every workspace and domain, explicitly — leave anytime and move billing directly to Google or Microsoft. sending.ac runs inboxes on managed isolated tenants; confirm its ownership and transfer terms so you know exactly what you keep if you leave.
// ips
Dedicated US and EU IPs
Inboxlogy sends from dedicated US and EU IPs with automated SPF, DKIM and DMARC on every mailbox — useful if you're targeting European prospects. sending.ac runs isolated-tenant Azure infrastructure; confirm dedicated US/EU IP geography for your specific volume when you buy.
05 / The verdict
The verdict: it depends on your volume.
sending.ac is an excellent choice if you're a very high-volume sender who specifically wants private Azure infrastructure and can commit at volume — its ≈$0.50/inbox scale economics are genuinely strong. But for most teams, Inboxlogy is the better fit: genuine Google Workspace you own, dedicated US and EU IPs, no minimum order, explicit 100% ownership, a full API, and live in ~10 minutes — all backed by a best-price guarantee.
Genuine Google Workspace you own — $2.80–$3.50/mailbox with dedicated US and EU IPs; sending.ac is Azure/Microsoft-focused, not genuine Google.
No minimums — buy one mailbox or a thousand; sending.ac's best pricing comes at agency/volume tiers.
Live in ~10 minutes — authorised reseller provisioning, no infrastructure wait.
You own everything, explicitly — stated 100% ownership + admin across Google AND Microsoft, dedicated US and EU IPs.
Best-price guarantee* — find a lower price on comparable infrastructure and we'll match it, plus our included benefits.
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.
Worth spelling out on this page: sending.ac's ≈$0.50/inbox is Azure-tenant pricing at ~1,000 scale — a different product from a single genuine Google mailbox you can buy one at a time. On a like-for-like genuine Google Workspace or Microsoft 365 mailbox with dedicated US and EU IPs and full ownership, bring us the quote and we'll match it.
*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 bulk-tenant or shared/SMTP inboxes aren't eligible. Prices verified Sep 2026.
06 / FAQ
Inboxlogy vs sending.ac, answered.
The questions outbound teams actually ask when comparing the two — with September 2026 numbers.
01Is Inboxlogy better than sending.ac?
It depends on what you need. For most teams, yes — Inboxlogy is an authorised Google & Microsoft reseller giving genuine mailboxes you own (dedicated US and EU IPs) at $2.80–$3.50/mo, with no minimum order, explicit 100% ownership, a full API and setup in ~10 minutes. sending.ac is genuinely strong for very high-volume senders who want private Azure infrastructure — pre-warmed isolated tenants at ≈$0.50/inbox at scale — but it's Azure/Microsoft-focused, entry is at volume, and genuine Google Workspace isn't its core. Figures as of September 2026 — verify before buying.
02Is sending.ac cheaper than Inboxlogy?
Only on high-volume Azure. sending.ac's ≈$0.50/inbox comes from private Azure tenants at ~1,000 scale — a different product from a single genuine Google mailbox, and entry is at agency/volume tiers. On genuine Google Workspace or Microsoft 365 that you own, Inboxlogy is $2.80–$3.50/mailbox with no minimum and instant setup. Pick sending.ac if you want private Azure infrastructure at scale; pick Inboxlogy for genuine Google you own, EU IPs and buying in any quantity. As of September 2026 — verify current pricing.
03Are sending.ac's mailboxes genuine Google or Microsoft accounts?
sending.ac focuses on Microsoft/Azure inboxes on isolated private tenants — powerful infrastructure, but genuine Google Workspace you own isn't its core offering. Inboxlogy is an authorised reseller of genuine Google Workspace and Microsoft 365, provisioned direct, with explicit 100% ownership and dedicated US and EU IPs. So if you specifically need real Google mailboxes you own and can transfer, that's the key difference. Confirm sending.ac's account type and ownership terms for your use case. As of September 2026.
04Can I buy a single mailbox instead of a package?
With Inboxlogy, yes — there are no forced packages and no minimums. Buy exactly one mailbox or a thousand; your per-mailbox rate simply follows your volume tier ($3.50 down to $2.80). sending.ac's best economics come at agency/volume tiers, so its lowest headline prices require buying at scale.
05Does Inboxlogy have an API?
Yes. Inboxlogy has a full API — order, provision and manage mailboxes programmatically and automate your entire cold-email workflow end-to-end. Confirm sending.ac's API/provisioning options for your workflow; if programmatic ordering across genuine Google and Microsoft matters, Inboxlogy has the edge.
06Does Inboxlogy offer a best-price guarantee?
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 asterisk: it applies to like-for-like setups — genuine Google Workspace or Microsoft 365 mailboxes (dedicated US and EU IPs) with full ownership. Non-comparable private-tenant or Azure-infrastructure inboxes aren't eligible — which is why sending.ac's ≈$0.50 Azure-tenant rate doesn't trigger the match: it's a different product. Prices verified September 2026.
Genuine Google & Microsoft mailboxes at $2.80–$3.50/mo — dedicated US and EU IPs and 100% ownership included — connected free to the sequencer where your warmup runs. Order in about 10 minutes, with no warmup tool to bolt on.
