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EMAIL WARM-UP / INBOX PLACEMENT

Email warm-up and inbox placement advice for small B2B senders, read from vendor pages and mailbox provider rules.

Independent guides for small B2B senders whose email lands in spam: what to fix first, how long warm-up takes, and whether Warmy or a rival is worth the cost.

Bottom lineWarmy is a paid email warm-up and deliverability service. Whether it helps depends on your setup: authentication, sending pace and list quality come first, and the vendor's own pages say warm-up cannot repair failing records. These guides read the vendors' pages and the mailbox providers' rules and show where the claims stop.
✓ 30 sources recorded↻ Last materially reviewed 2026-10-23↗ Limitations included
Best for: Senders who run several mailboxes and want warm-up, placement tests and DMARC monitoring in one dashboardStart with: Warmy review & pricingBuilt around: evidence → fit → action
Try Warmy →
Built forSmall B2B senders
Trial (vendor)7 days, one mailbox
IncludesWarm-up, tests, DMARC monitoring
CheckedOct 23, 2026
Use the guide well

What matters before the feature list.

These field notes explain the product, workflow, and tradeoffs that can change the decision.

Field note

Who Inbox Placement Desk is for

Inbox Placement Desk is an independent guide for small B2B senders, such as agency owners, SaaS founders and outbound leads, whose campaigns or new sending domains land in spam. It asks what to fix first, how long warm-up really takes, when warm-up does not help, and whether a paid deliverability tool is worth its monthly cost against free fixes. Everything here is read from vendor pages, help articles and terms, plus platform, regulator and standards sources, dated October 23, 2026. Start with the Warmy review or go straight to the free warm-up steps.

Field note

Where Warmy fits and where it does not

Warmy is a subscription service that warms up mailboxes through a network of other inboxes, runs placement tests and monitors authentication. It can help a sender with several mailboxes keep that work in one place. It cannot get mail past failing SPF, DKIM or DMARC records, a provider block or a Gmail spam rate that has reached 0.3%, and its own calculator page says so. The pricing guide shows how it bills, and Warmy vs MailReach sets it beside a rival that charges per mailbox.

Field note

Fix the setup before you pay for a tool

Spam-folder email has several causes, and warm-up addresses one of them: a new sender with no history. Google, Yahoo and Microsoft publish sender requirements for authentication, spam complaint rates and unsubscribe handling, and each is dated here because they change. The best email warmup tools guide sorts six options by how they bill, and how to warm up a new email domain gives the free manual route.

Field note

How these pages are sourced

Plan facts come from each vendor's own pages and are dated, because plans, limits and mailbox provider rules change. Where a vendor page is silent, the guide says the page does not state it. Vendor results, network sizes and placement percentages are the vendors' own claims and are labeled that way, in line with the FTC's endorsement guides. Prices stay on the vendors' live pages and are not repeated here. This is not legal advice, and deliverability results depend on your own sending.

Choose your question

What are you deciding?

Start with the question closest to your spam folder.

01 · 3 guides

Warmy review, pricing and what it is

What Warmy is, how it bills, what its plan includes and where its limits start, read from the vendor's own pages on October 23, 2026.

Follow this path →02 · 2 guides

Email warm-up tools compared by name

Named warm-up tools side by side from each vendor's published pages, starting with Warmy and MailReach: how each bills, what each tests and who should pick which.

Follow this path →03 · 2 guides

Best email deliverability tools for small senders

Six warm-up options and one placement suite grouped by billing unit and what else they include, each read from its own pages, with when free fixes come first.

Follow this path →04 · 2 guides

How to authenticate, warm up and test a sending domain

Step-by-step help for authenticating a new sending domain, ramping volume, reading Postmaster data and deciding whether a warm-up tool is needed.

Follow this path →
Evidence strength

Read from the vendor, dated, with limits stated.

Every plan fact is dated and linked to the vendor page it came from.

Explore the guides

Fix the setup. Then judge the tool.

Choose the question closest to your situation, then follow the related guides when they help you take the next step.

Buying guide

Warmy review: what the email warm-up tool includes, where its limits are and who it fits

A review of Warmy, the warmy.io email warm-up and inbox placement service, read from its own pages: features, trial and billing terms, limits and fit.

Read the guide →Buying guide

Warmy pricing: how the plans are built, what the trial covers and how to compare the cost

How Warmy prices its email warm-up plans, what its trial and renewal terms say, and how to compare the cost with MailReach, Warmup Inbox and Instantly.

Read the guide →Practical guide

What is Warmy? An email warm-up and deliverability service explained

What Warmy (warmy.io) is, how its email warm-up works, what else the service includes and where warm-up has limits, read from vendor and platform pages.

Read the guide →Side-by-side comparison

Warmy vs MailReach: how each bills, what each tests and who should pick which

Warmy and MailReach side by side from each vendor's own pages: billing unit, warm-up volume, placement tests, authentication tools and who should pick which.

Read the guide →Buying guide

Best email warmup tools: six options sorted by how they bill and what they include

Six email warm-up options and one placement suite sorted by billing unit and extras, read from vendor pages, with when free fixes beat any paid tool.

Read the guide →Practical guide

How to warm up a new email domain: the order of steps, how long it takes and when a tool helps

Authenticate first, start with low volume to people who want your mail, raise it in steps and watch complaints. How long it takes and when a tool helps.

Read the guide →