Mailreach vs TrulyInbox: Email Warmup Tool Comparison

Mailreach vs TrulyInbox: Email Warmup Tool Comparison

These two tools answer the same question with different units. Mailreach charges $19.50 for each mailbox you warm. TrulyInbox charges for the warmup emails sent and lets you connect as many mailboxes as you like. At three inboxes that is a difference of about thirty dollars a month. At fifty it is a difference of about eight hundred, and the reason is arithmetic rather than any feature either one ships.

The short answer

Pick TrulyInbox if you warm more than about four mailboxes, or if the number changes as clients arrive and leave. Its pricing page states the position plainly: pay for emails sent, not accounts connected. Starter is $29 a month for 200 warmup emails a day across unlimited accounts.

Pick Mailreach if you want spam placement testing in the same subscription as the warmer, or if you are warming a handful of mailboxes and want each one to have its own volume rather than share a pool. Its slider publishes $19.50 per mailbox per month, and every warmed mailbox carries at least 20 spam test credits.

The two products are closer in capability than in shape. Both warm through real accounts, both monitor DNS records and blacklists, and both report a per-inbox health score. What differs is what you are buying a unit of.

One prices mailboxes, the other prices volume

Mailreach pricing

Mailreach's pricing page carries no named tiers. It renders a slider: choose the number of mailboxes to warm and the page shows $19.50 per mailbox per month, with an annual toggle marked Save 20%. Spam test credits run on a second slider from 20 to 10,000 or more, and at least 20 come with the warmer at every position. The published warmup ceiling is up to 100 emails per day per mailbox.

One correction worth stating, because our own records had it wrong: the pricing dataset behind this site carried a named "1 mailbox" tier at $25 a month. A byte search of the live page finds no $25 token on it at all. The figure above is the page's.

Source: Mailreach pricing

TrulyInbox pricing

TrulyInbox publishes two things most warmup vendors leave implicit. It states the sizing rule it expects you to use, a 2:1 ratio of warmup emails to cold emails every day and ongoing. And it states a reply-rate ceiling per tier rather than one number for the product: up to 25% on Starter, 45% on Growth, 60% on Scale and 65% on Scale Plus.

Source: TrulyInbox pricing

$19.50Mailreach

per mailbox per month, on a slider

$29TrulyInbox Starter

200 warmup emails a day, unlimited accounts

2:1TrulyInbox sizing rule

warmup emails per cold email, published on its pricing page

The arithmetic, at four sizes

Here is an invented but arithmetically honest worked example. The inbox counts are chosen to show the shape of the two curves. No part of it comes from a customer, and both rates are the published ones on monthly billing.

Sizing TrulyInbox takes one step, using the vendor's own rule: an inbox sending 30 cold emails a day needs 60 warmup emails a day, so the plan's daily volume divided by 60 gives the inboxes it covers.

The Mailreach column is a straight line and the TrulyInbox column is a staircase with wide treads, so the gap widens with every mailbox and never closes. At three inboxes the difference is about thirty dollars a month, which nobody should change tools over. At fifty it is about seven hundred and seventy-five, which is a hiring decision.

Two things the table does not price. Mailreach's figure includes spam testing, which on TrulyInbox is not part of the product, so a team that needs placement testing is comparing Mailreach against TrulyInbox plus a third tool. And TrulyInbox's volume is pooled, so twenty inboxes on a Starter plan warm at a tenth of the rate three would.

The daily ceilings, and what they mean at your send volume

Both vendors publish a daily warmup ceiling, and they express it differently enough that comparing them takes a step of arithmetic.

Mailreach publishes up to 100 emails per day per mailbox. Because you buy mailboxes, ten mailboxes carry up to 1,000 warmup emails a day between them, and the ceiling grows automatically as you add mailboxes.

TrulyInbox publishes a daily volume per plan rather than per mailbox: 200 on Starter, 1,000 on Growth, 3,000 on Scale and 5,000 on Scale Plus, shared across however many accounts you connect. Ten mailboxes on Growth get 100 a day each, which happens to match Mailreach exactly, and twenty mailboxes on the same plan get 50 each.

So the two ceilings coincide at the tier sizes TrulyInbox itself recommends and diverge as soon as you push past them. That is the practical cost of pooling, and it is entirely manageable if you size the plan properly and entirely invisible if you do not.

The habit worth taking from this is to read the daily ceiling before the monthly price on either vendor. The price tells you what the plan costs; the ceiling tells you whether it does the job at the volume you actually send.

Where the two feature lists actually differ

Every claim below is about what a vendor lists on its own page. A capability absent from one list is a fact about the list rather than proof the product lacks it, and both of these warm through networks of real accounts.

Mailreach lists

• A smart AI warming algorithm with dozens of parameters
• Automated spam testing with at least 20 credits included
• MailReach Co-Pilot, an AI deliverability assistant
• Blacklist, SPF, DKIM and DMARC monitoring
• A reputation tracking dashboard per inbox
• Multiple ESP warm up covering Google and Outlook
• Warmup for Mailgun, SendGrid and Amazon SES

TrulyInbox lists

• Billing by warmup emails sent rather than accounts connected
• Unlimited connected accounts on every paid tier
• Four warmup strategies selectable by mailbox profile
• AI warmup content by topic and industry
• Deliverability intelligence and a daily score
• Analytics broken out by email provider
• A free tier that warms one account indefinitely

Two divergences survive an honest reading. Mailreach sells spam placement testing inside the same subscription, which TrulyInbox does not. TrulyInbox offers four selectable warmup strategies and per-provider analytics, which is finer control than Mailreach documents on its pricing page. Everything else on those two lists describes broadly the same job.

Who should pick which

Mailreach or TrulyInbox

• ✓Yes: You warm more than four mailboxes and warmup is a standalone line. Pick TrulyInbox.
• ✓Yes: You want spam placement testing in the same subscription as the warmer. Pick Mailreach.
• ✓Yes: Your mailbox count changes month to month. Pick TrulyInbox, where adding an account does not add a line.
• ✓Yes: You want each mailbox warming at full speed regardless of how many others you run. Pick Mailreach, where volume is not pooled.
• ~Depends: You warm from Mailgun, SendGrid or Amazon SES rather than Gmail and Outlook. Check Mailreach first; it lists them.
• ~Depends: You are warming one or two mailboxes. The monthly difference is under twenty dollars, so pick either and spend the time on list quality.

Switching between them

Neither tool holds a list of yours, so there is nothing to export. Both connect mailboxes over OAuth for Google and Microsoft or SMTP for everything else, and the mechanical migration is a matter of disconnecting and reconnecting.

Run both in parallel for about a week rather than cutting over in a day. Warmup works through a sustained daily pattern, and a mailbox whose pattern stops and restarts reads worse to a provider than one that was never warmed at all.

Moving to TrulyInbox needs the sizing step. Total your daily cold sends across every mailbox, double it per the published 2:1 rule, and buy the tier that covers the result. Teams that skip it buy Starter for fifteen inboxes and then read the slow warming as the tool underperforming.

Moving to Mailreach needs the opposite check. Its warmup ramps gradually toward the stated 100 emails a day per mailbox, so a migrated mailbox is not at full volume on day one, and the per-mailbox bill rises with every account you add with no plan boundary to prompt a review.

Where warmup sits in a cold outbound stack

Warmup is infrastructure rather than strategy. It raises the probability that a message reaches somewhere a person will look, and it has no view on whether the message deserved to arrive.

That matters more in the way we run outbound than it does elsewhere. Campaigns send one message per prospect, with no bumps and no thread replies, so a first touch that lands in spam is the entire campaign for that person. There is no follow-up to rescue it. Placement carries the full weight, and warmup is the cheapest thing that moves placement.

It is also why the mailbox counts in the table above are larger than newcomers expect. Volume in cold outbound comes from many mailboxes each sending modestly, because per-mailbox velocity is what providers punish. A per-mailbox price is therefore a tax on the architecture that keeps you deliverable, which is the structural argument for TrulyInbox's model and the reason Mailreach's slider has to be read at your real inbox count rather than at one.

Neither tool measures the thing that matters, which is whether real prospects saw the mail. A deliverability score is a proxy; reply rate on real sends is the measurement. See the cold email pricing guide for how a warmup line sits against the rest of the budget and the warmup roundup for the wider field.

The decision, in one paragraph

Count your mailboxes and decide whether you need spam testing. Above four mailboxes TrulyInbox is cheaper by a margin that grows with every account and keeps growing, because one price is a straight line and the other is a staircase with very wide treads. Mailreach earns its per-mailbox rate in two situations: you want placement testing bundled rather than bought separately, or you are warming few enough mailboxes that pooled volume would slow each one down for no saving worth having.

Related Reading

• Best Mailreach Alternatives in 2026
• Best TrulyInbox Alternatives in 2026
• Lemwarm vs TrulyInbox: Email Warmup Tool Comparison
• Mailreach vs Warmbox: Email Warmup Tool Comparison
• Best Email Warmup Tools for Cold Email Teams

If you would rather not run the infrastructure at all, RevenueFlow books qualified meetings on a pay-per-meeting basis and publishes client results.

Pricing and features are taken from the vendors' own pages. Verify current terms with the vendor before relying on them.