Warmerly
One ramp for every mailbox, with a daily limit you can lower per mailbox.
Warmerly
TrulyInbox
One-to-one · Warmup strategies and controls
Warmup strategies and controls
One row, in depth: what each tool does, the verified numbers, and who each suits.
TrulyInbox details read from its pricing page, home, features, how-it-works, network, why-trulyinbox and agencies pages, V2 blog post, refund policy, terms, privacy policy, API docs and help centre on 21 October 2026.
Warmerly
One ramp for every mailbox, with a daily limit you can lower per mailbox.
TrulyInbox
Four strategies, a reply-rate slider, schedules and provider targeting; its V2 post says one AI strategy replaces them.
The short answer
Warmup strategies and controls, in one look.
Warmerly runs one ramp for every mailbox and lets you lower the daily limit on each. TrulyInbox is ahead on controls: its pricing and features pages sell four warmup strategies, a reply-rate slider, schedules and provider targeting, though its V2 post says one AI strategy with a daily maximum replaces the four. Last checked 21 October 2026.
TrulyInboxTrulyInbox ahead on this row
Four strategies, a reply-rate slider, schedules and provider targeting; its V2 post says one AI strategy replaces them.
The picture
Drawn side by side.
What you choose
As each describes it
WarmerlyTrulyInbox
Warmerly
One ramp4 a day to 50 a dayLower the limit per mailbox
TrulyInbox
Four strategies on its pricing pageStarter has oneV2: one AI strategyYou set a daily maximum
TrulyInbox's V2 post says one AI strategy replaces the four. Both versions are live on its site while the rollout runs in phases.
How Warmerly does it
Warmerly, in detail.
One ramp, an age-and-health-driven quota, and a daily limit you can lower. Fewer dials, on purpose.
01
One ramp for every mailbox
Every mailbox follows the same curve, from 4 a day on day 0 to 50 a day by day 30. There is no strategy to pick, so there is no wrong choice to make on day one.
Warmerly product, checked 21 October 2026
02
A lower daily limit, per mailbox
Each mailbox can carry its own warmup daily limit set below the ramp, and a switch to pause or resume warmup. The limit only holds the quota down; it never raises it above what the ramp allows.
Warmerly product, checked 21 October 2026
03
Working hours in the mailbox's own time
Warmup sends happen between 08:00 and 20:00 in the mailbox's local timezone, so the pattern follows a working day.
Warmerly product, checked 21 October 2026
04
Default engagement behaviour
A warmup message is opened after a delay of 10 to 120 minutes, about 90 per cent are opened and about 20 per cent of those are starred. A reply has a default chance of 30 per cent, lower deeper in a thread, stopping at three messages.
Warmerly product, checked 21 October 2026
05
The reason for today's number
The warmup page names what limits a mailbox's quota today, whether age, provider cap, weekend or health, so you can see why it is not higher.
Warmerly product, checked 21 October 2026
06
Graduation changes a label, not the volume
After 30 days on which it really sent, a mailbox moves from aging to active. Nothing functional changes: the volume still comes from the ramp, and warmup keeps running while you send.
Warmerly product, checked 21 October 2026
How TrulyInbox does it
TrulyInbox, in detail.
Four strategies and a set of dials on the pages sold today, and a single AI strategy in the V2 rebuild rolling out since 2 October.
01
Four named strategies
AI Adaptive tunes daily volume to account health, Progressive ramps up for new accounts, Randomised fluctuates, and Flat holds a fixed volume for established accounts. You can switch at any time.
trulyinbox.com/features/; https://www.trulyinbox.com · read 21 October 2026
02
Starter has one, Growth has all four
The pricing page lists AI Adaptive on Starter and all four strategies, with adjustable settings, on Growth and above.
trulyinbox.com/pricing · read 21 October 2026
03
Reply rate, schedule and provider mix
A slider sets the reply rate and the system works out the replies from daily volume. Custom schedules cover timezone, sending days and time windows, and provider targeting splits warmup across Google, Microsoft and others.
trulyinbox.com/features · read 21 October 2026
04
AI-written content
Warmup emails cover 50+ industries with up to 5 topics, in 12 languages. The why-trulyinbox page says that if AI generation fails it silently falls back to default content.
trulyinbox.com/why-trulyinbox · read 21 October 2026
05
V2 replaces the four with one
The V2 post says the previous strategies are replaced by one AI strategy, and you set only a daily maximum send limit. Schedule, reply rate and provider mix settings carry over.
trulyinbox.com/blog/trulyinbox-v2-rebuilt-for-sender-reputation-management · read 21 October 2026
06
Guidance on changing settings
Its help says small changes made infrequently are far more effective than constant adjustments, and that pausing and restarting looks unpredictable, so slowing down is safer than stopping.
support.trulyinbox.com/en/articles/12928509-mistakes-that-can-ruin-warm-up-results-in-trulyinbox · read 21 October 2026
07
Templates, in beta
V2 adds custom subject lines and bodies that mix with the AI content. The post says Templates is in beta on Growth and above.
trulyinbox.com/blog/trulyinbox-v2-rebuilt-for-sender-reputation-management · read 21 October 2026
What TrulyInbox does not say
We looked, and found no statement on these. That is about its published pages only, not about the product.
- What each strategy's daily volume curve looks like in numbers
- Which accounts have already moved to V2 and which still see the four strategies
- Whether the reply-rate slider has limits, or what range is allowed
- The full list of the 12 languages: only English, Spanish, French and German are named
Where the sources disagree
We report each version rather than pick one.
- TrulyInbox's pricing and features pages describe four warmup strategies, and its V2 post says one AI strategy replaces them. Both are live on the site at once, and the post says features differ while the rollout runs in phases.
- The features page lists the strategy named Random and the pricing and V2 pages call it Randomised. We use Randomised.
The numbers
Only what we could verify.
| Measure | Warmerly | TrulyInbox |
|---|---|---|
| Warmup strategies and controls | One ramp for every mailbox, with a daily limit you can lower per mailbox. | Four strategies, a reply-rate slider, schedules and provider targeting; its V2 post says one AI strategy replaces them. |
| Strategies to choose from | 1 ramp | 4 on its pricing page, 1 in V2 |
| Strategies on the cheapest paid plan | 1 ramp | 1, AI Adaptive |
| Content languages | Not stated | 12 |
| Industries in the content | Not stated | 50+ |
| Warmup window | 08:00 to 20:00 local | Custom, from Growth |
| Default reply chance | 30% | A slider |
| Ramp length to the ceiling | 30 days | Not stated |
In practice
What it means for you.
Our reading of the facts above. Not a promise, and not the only reasonable reading.
More dials mean more ways to get it wrong
TrulyInbox's own help blames most warmup problems on behaviour such as sudden changes, restarting and over-adjusting. A product with fewer settings has fewer of those mistakes to make, and fewer ways to tune.
Check which version your account runs
TrulyInbox's V2 post says free accounts move first and API users last, with an email before your account moves. If the strategy picker you see differs from its pricing page, that is why.
Use the reply rate with care
TrulyInbox's slider lets you push the share of warmup mail that gets a reply. Warmerly's default is 30 per cent for a first message. A higher reply rate is more activity, not necessarily a better-looking pattern.
Timezone and hours matter for outreach too
If your prospects work in a different timezone from your mailboxes, TrulyInbox's schedule control lets you move the warmup window. Warmerly's campaigns have a separate recipient-local window, but its warmup window is the mailbox's own day.
Language and industry need a human check
TrulyInbox says it writes warmup content to match your industry and language. We could not test its output, so read a sample from your own account before you rely on it.
Who it suits
Pick the one that fits.
Warmerly
Warmerly is the better fit if
- You want warmup to run without choosing a strategy
- You would rather read why today's volume is what it is than tune it
- You want a ramp that holds to Gmail, Outlook and Zoho caps for you
- You want a lower limit on one mailbox without touching the others
TrulyInbox
TrulyInbox is the better fit if
- You want to pick a strategy, such as Flat for an established mailbox
- You want to set the reply rate, schedule and provider mix
- You want warmup text in a given language or industry
- You will watch results and adjust in small steps
Questions
What warmup strategies does TrulyInbox have?
Its features and pricing pages list four: AI Adaptive, Progressive, Randomised and Flat. Its V2 post says one AI strategy replaces them, with a daily maximum you set.
Which TrulyInbox plan includes all four strategies?
Growth and above. Starter lists AI Adaptive only, according to the pricing page.
Does Warmerly have warmup strategies?
No. Every mailbox follows one ramp, 4 a day on day 0 to 50 a day by day 30, adjusted for provider caps, weekends and health. You can lower a mailbox's daily limit.
Can I set the reply rate on Warmerly?
Warmerly's default is a 30 per cent chance of a reply to a first warmup message, lower deeper in a thread. Our docs do not publish a customer reply-rate setting, so we do not claim one.
Is it wise to switch strategy often?
TrulyInbox's own help advises against it: small changes, made rarely, work better than constant adjustment.
Sources
- TrulyInbox features page
- TrulyInbox pricing page
- TrulyInbox why-trulyinbox page
- TrulyInbox V2 post
- TrulyInbox help: mistakes that ruin warm-up
- Warmerly how warmup works
TrulyInbox pages were read on 21 October 2026. Plans and wording change, so check the vendor's own page before you decide. Warmerly details come from the product as it runs today.
More features
See it on your own mailbox.
Connect a mailbox. Warmerly runs alongside whatever you send from now, so you can compare before you move anything.
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