By Chris Aylott
TrulyInbox is a focused email warmup and placement tool — not a cold outreach platform bundling warmup as an afterthought. It automates warmup through a real-inbox seed network, tests spam placement, and monitors domain health. This page covers where it is genuinely strong, where the two tools differ, and what the credential access model means for your mailbox.
TrulyInbox is focused on the same core problem as InboxPlease: building and maintaining sender reputation so mail lands in the inbox rather than spam. Its warmup mechanism uses a network of real mailboxes to simulate genuine engagement — emails are sent, received, and marked as important in a way that signals positive sender behavior to ISPs. That peer-engagement model is the standard approach in the category, and TrulyInbox executes it as a primary product rather than a feature bundled into an outreach platform.
The tool includes spam placement testing — the ability to send a test message through its seed panel and see which folders it lands in across major providers. This is the same category of test that InboxPlease offers. TrulyInbox also provides domain health monitoring and some blacklist checking, giving users a consolidated view of their sender status without having to switch between multiple tools. For a small team or solo sender who wants warmup and placement testing under one roof, that scope is coherent and covers the fundamentals.
TrulyInbox offers a limited free plan, which lowers the barrier to testing the product before committing. That is a genuine advantage over tools that require a paid trial or a sales conversation to get started.
This is the most significant structural distinction between the two tools, and it is worth explaining clearly rather than listing it as a bullet point.
Warmup tools that operate through a real-inbox seed network need to do two things: send warmup emails outbound, and process incoming warmup emails — opening them, engaging with them, marking them as important. The second half of that loop requires read access to your mailbox. TrulyInbox, like most warmup tools in this model, requires full inbox access to function.
InboxPlease was designed from the start around a different constraint: send-only OAuth. The warmup engine only ever sends outbound warmup messages. It never reads your inbox, never accesses your existing mail, and never requires read permission to your account. The OAuth grant is scoped to sending, and nothing else.
For most senders, this may not be a deciding factor. For teams operating under strict data handling requirements — regulated industries, companies with legal hold obligations, or anyone whose IT or security team reviews third-party credential grants — send-only OAuth is a structurally different risk profile. The comparison is not about trustworthiness; it is about what credential access the tool requires by design.
Because the two tools are close in scope — both focused on warmup and deliverability, neither a full outreach platform — the comparison is more granular than it is for tools like Saleshandy or Smartlead. The differences are specific features rather than fundamental scope mismatch.
InboxPlease includes DMARC reporting. TrulyInbox does not. DMARC data shows you who is sending on behalf of your domain, how much mail is authenticating correctly, and whether spoofing attempts are appearing. For teams sending from multiple domains or subdomains, DMARC is how you detect authentication failures before they affect sender reputation. Without it, a misconfigured third-party integration can degrade deliverability silently.
InboxPlease scans across 95 blacklist engines. TrulyInbox includes some blacklist checking. The difference in coverage matters because major sending blacklists — Spamhaus, Barracuda, Invaluement, and others — are checked independently, and a listing on a second-tier engine can still affect delivery at specific hosts. Broad coverage means a listing is caught earlier.
InboxPlease includes an AI assistant that answers questions about your specific domain, authentication records, and placement data. TrulyInbox does not have an equivalent. The assistant is most useful when placement degrades and you need to diagnose whether the issue is authentication, blacklist, warm-up state, or content.
InboxPlease runs a free placement test with no account required. You can see how your domain places across Gmail, Outlook, Yahoo, and iCloud before signing up for anything. TrulyInbox requires account creation to access its placement testing. Running the free test first is a better way to establish a baseline — before any tool is touching your sending.
InboxPlease shows you the warm-up plan before it executes — volume ramp, timing, and approach — so you can review it before any warmup mail goes out. TrulyInbox does not report a comparable preview feature. Seeing the strategy before execution is particularly useful for high-volume senders where an aggressive warmup ramp would be a problem.
TrulyInbox offers a free plan with limited capacity, and paid tiers that start in the range of $18/month for basic warmup. Pricing changes, so verify current figures directly at trulyinbox.com before making a decision. The free entry point is a genuine advantage for teams that want to test warmup before committing.
InboxPlease is priced at €79/month for up to 5 mailboxes with all features included — warmup, placement testing, 95-engine blacklist scan, DMARC analytics, and the AI deliverability assistant. There is no separate add-on tier for DMARC or placement testing; the full feature set is available on a single plan. The 14-day trial requires no card.
TrulyInbox pricing verified at trulyinbox.com — verify current figures directly before making a decision, as tiers change.
TrulyInbox pricing verified at trulyinbox.com. Verify current figures before citing — tiers and features change over time.
| Feature | TrulyInbox | InboxPlease |
|---|---|---|
| Primary purpose | Dedicated email warmup and inbox placement tool | Dedicated warm-up, placement testing, blacklist monitoring, and DMARC analytics |
| Free placement test | Requires account signup | Yes — unlimited, no account required |
| Free trial | Limited free plan available | 14 days, no card required |
| Inbox access model | Full inbox access required — warmup reads and engages with incoming emails | Send-only OAuth — no inbox read access, ever |
| Warm-up focus | Core product — warmup and placement are the primary offering | Core product — entire roadmap focused on deliverability |
| Blacklist monitoring | Some blacklist checks included | 95-engine blacklist scan, included |
| DMARC analytics | Not included | Included |
| AI deliverability assistant | Not included | Included — answers questions about your domain, authentication, and placement |
| Warm-up strategy preview | Not reported | Visible before execution |
| Domain health monitoring | Included | Included |
| Spam placement testing | Included | Included — runs across Gmail, Outlook, Yahoo, iCloud |
| Pricing | Free plan available; paid tiers from ~$18/month — verify current pricing at trulyinbox.com | €79/month for up to 5 mailboxes, all features included |
See how your domain places before committing to any tool. Then trial InboxPlease for 14 days, no card required.
