Mailivery sells shared daily warmup volume with unlimited mailboxes. Most tools you’ll be pointed at sell per inbox, which isn’t the same product with a different price tag.
So this page does the arithmetic nobody else publishes. What each tool costs per warmup email, and what that works out to at 5, 15 and 40 mailboxes.
Key Summary: Mailivery Alternatives at a Glance
- Teams leave Mailivery when the shared volume hits the per-mailbox ceiling. Starter gives you 200 warmup emails a day, capped at 100 per mailbox. That covers two mailboxes properly, or ten at 20 a day each, which isn’t a warmup.
- TrulyInbox for the same flat-volume model with a free plan, MailReach for warmup plus inbox placement testing, Warmup Inbox for one or two mailboxes, Warmforge for a Google and Microsoft only pool, Warmy.io for the deepest deliverability suite, Warmbox for wide SMTP coverage, and Instantly if you want warmup bundled with sending.
- Pricing splits three ways. Flat by daily volume ($29 to $199 a month, unlimited mailboxes), per inbox ($12 to $25 a mailbox before discounts), or bundled into a sending platform (from $47). Per-inbox is cheaper below roughly ten mailboxes. Flat volume wins above that and keeps winning.
- Check one number before you buy anything: your total daily warmup volume. That’s mailbox count times the warmup emails each mailbox needs.
- Two honest caveats. Mailivery and TrulyInbox cost within a fraction of a cent of each other per warmup email on the entry and middle tiers, so switching between them is a decision about caps and free tiers rather than price. And if you’re choosing a sending platform anyway, a bundled warmup may remove the need for any tool here.
Mailivery Alternatives Comparison Table
All prices are monthly list price, read from each vendor’s own pricing page on 31 August 2026.
Annual billing takes 20 to 25% off most of them, and the per-inbox tools discount by volume too. I’ve used monthly throughout because every vendor publishes it.
Pricing at a glance
| Tool | Pricing model | From (monthly) | Warmup volume | Free plan or trial |
|---|---|---|---|---|
| Mailivery | Flat, shared volume | $29 | 200 / 800 / 2,500 a day | 7-day trial |
| TrulyInbox | Flat, shared volume | Free, then $29 | 200 to 20,000 a day | Free forever, no card |
| MailReach | Per mailbox, banded | $25 per mailbox | ~100/day per mailbox | No free trial |
| Warmup Inbox | Per inbox | $15 per inbox | 75 / 250 / 1,000 a day | 7-day trial, no card |
| Warmforge | Per slot, banded | $12 per slot | Not published | 1 free slot |
| Warmy.io | Per inbox, quote only | Not published | By plan, quote only | 7-day trial, no card |
| Warmbox | Per plan, inbox tiers | $19 | 50 / 250 / 500 a day | Trial available |
| Instantly | Bundled with sending | $47 | “Unlimited” | 14-day trial |
Caps and coverage
| Tool | Per-mailbox cap | Reply-rate cap | Mailbox limit | Placement testing |
|---|---|---|---|---|
| Mailivery | 100/day Starter, 250/day above | 30% Starter, 55% above | Unlimited | 10 / 30 / 100 credits |
| TrulyInbox | None | 10% to 65% by plan | Unlimited | Not offered |
| MailReach | ~100/day | Not published | Per mailbox | Included, 20 credits |
| Warmup Inbox | 75 / 250 / 1,000 by plan | 25% / 45% / 50% | Per inbox | Not offered |
| Warmforge | Not published | Not published | Per slot | 1 free test/mo, then paid |
| Warmy.io | Not published | Not published | Per inbox | Included, seed list |
| Warmbox | Set by plan tier | Not published | 1 / 3 / 6 by plan | Not offered |
| Instantly | ~40/day reported | Not published | Unlimited | Separate paid product |
One thing to read carefully on Mailivery, because it catches people out.
The plan cards quote a shared daily volume across every mailbox you connect. The feature table quotes a separate per-mailbox ceiling: 100 a day on Starter, 250 above it. Those are two different limits and you’re bound by both.
The 7 Best Mailivery Alternatives
1. TrulyInbox
TrulyInbox is a standalone warmup and deliverability tool that prices by total daily warmup volume rather than by mailbox. That makes it the closest structural match to Mailivery on this list.
- Best for: teams already sold on the flat-volume model who want a free tier and no per-mailbox ceiling.
- How it prices: flat, by shared daily volume, unlimited accounts on every paid plan.
- Free forever for 1 account at 10 a day. Starter $29/mo for 200, Growth $99 for 1,000, Scale $199 for 3,000.
- Scale Plus runs 5,000, 10,000 and 20,000 a day from $479. Annual takes 15 to 24% off, and paid plans carry a 7-day trial with no card.
- Standout capability: no per-mailbox daily ceiling at all. The pricing confirms volume is shared across every connected account, following the 2:1 ratio.
So a plan’s volume can sit on three mailboxes or spread across thirty, without hitting a wall partway up.
Pros
- Same flat-volume model as Mailivery, with a forever-free tier and no card required
- No per-mailbox cap, and headroom to 20,000 a day where Mailivery stops at 2,500
- Reply-rate ceiling reaches 60% on Scale and 65% on Scale Plus, against Mailivery’s 55%
- API access from Starter up, and the only tool here that bulk-connects a whole Google Workspace or Microsoft tenant in one flow
Cons
- Inbox placement testing is not live yet. If you want to see where mail lands, that’s a second tool
- No embeddable connect form and no webhooks, so it can’t sit underneath your own product
- Volume is shared, so the harder you warm each mailbox, the fewer you can run
Verdict: The natural swap if you like Mailivery’s model and want a free plan and more headroom. Not if you need placement testing.
| Area | TrulyInbox | Mailivery |
|---|---|---|
| Pricing model | Flat, by shared daily volume | Flat, by shared daily volume |
| Cost per daily warmup email | $0.145 entry, $0.066 at 3,000/day | $0.145 entry, $0.080 at 2,500/day |
| Volume ceiling | 20,000 a day | 2,500 a day |
| Per-mailbox daily cap | None | 100/day Starter, 250/day above |
| Placement testing | Not offered | Included, 10 to 100 credits by plan |
| API | 33 endpoints, bulk tenant connect | ~61 endpoints, embed form, webhooks |
| Free plan or trial | Free forever, no card | 7-day trial |
Verified G2 Reviews:
“Easy-to-Use Email Warm-Up with a Smooth, Gradual Ramp-Up” – 4.5/5, Aaron B, Founder/CEO, Logistics and Supply Chain
“Easy to Use, Great Results” – 5/5, Joe L, Marketing Manager, Small-Business
“Simple Setup, Boosts Email Deliverability” – 4.5/5, Tim P, Small-Business
Connect a mailbox on the free plan, no credit card, and see whether the volume and reply rates hold up against what you’re paying for now.
2. MailReach
MailReach is a warmup and deliverability platform built on a network of real Google Workspace and Office 365 inboxes. It’s the only tool here that treats spam testing as part of the subscription rather than an upsell.
| Mailboxes | Monthly | Annual |
|---|---|---|
| 1 to 5 | $25/mailbox | $20/mailbox |
| 6 to 20 | $19.50/mailbox | $15.60/mailbox |
| 21 to 50 | $18/mailbox | $14.40/mailbox |
Pros
- Placement testing included, 20 credits minimum per mailbox
- Warmup network is real business mailboxes, not a mixed pool
- Up to 100 emails a day per mailbox
- Genuine volume discounts, and they start at 6 mailboxes rather than 50
Cons
- Still per-mailbox, so 40 mailboxes is $720 a month against Mailivery’s $199
- No free trial at all
- Network is Google and Microsoft, so it’s a poor fit for Zoho or SES senders
Verdict: The right answer under about ten mailboxes, especially if placement visibility matters. The wrong shape for a fleet.
| Area | MailReach | Mailivery |
|---|---|---|
| Pricing model | Per mailbox, banded | Flat, by shared daily volume |
| Cost at 15 mailboxes | ~$293/mo | $79/mo (Professional, 800/day) |
| Cost at 40 mailboxes | ~$720/mo | $199/mo (Business, 2,500/day) |
| Per-mailbox daily cap | Around 100/day per mailbox | 100/day Starter, 250/day above |
| Placement testing | Included, 20 credits minimum | Included, 10 to 100 credits by plan |
| Free plan or trial | No free trial | 7-day trial |
3. Warmup Inbox
Warmup Inbox is a per-inbox warmup service with a large network and one of the lowest entry prices here. The catch sits in the volume caps rather than the headline.
- Best for: one or two mailboxes where you want the cheapest credible option.
- How it prices: Basic from $15 per inbox a month, Pro $49, Max $79, with 20% off annually.
- Standout capability: spam monitoring, reputation checks and API access on every plan, including the entry tier.
Pros
- One of the cheapest entry points on this page
- Large warmup network, with multilingual content
- 7-day trial, no card
Cons
- Basic caps at 75 a day and a 25% reply rate, thin for a proper ramp
- Useful volume means Pro at $49 an inbox
- Volume discounts don’t start until 50 inboxes
Verdict: Excellent at one or two mailboxes on Basic. Past five, the per-inbox maths stops working.
| Area | Warmup Inbox | Mailivery |
|---|---|---|
| Pricing model | Per inbox | Flat, by shared daily volume |
| Cost at 15 mailboxes | ~$225/mo on Basic | $79/mo (Professional, 800/day) |
| Per-mailbox daily cap | 75 / 250 / 1,000 by plan | 100/day Starter, 250/day above |
| Placement testing | Not offered | Included, 10 to 100 credits by plan |
| Provider coverage | Gmail, Outlook, Zoho, SendGrid and others | Gmail, Workspace, M365, SMTP, SendGrid |
| Free plan or trial | 7-day trial, no card | 7-day trial |
4. Warmforge
Warmforge sells mailbox slots and runs its warmup pool exclusively on Google Workspace and Microsoft 365. That restriction is the entire product decision.
- Best for: B2B senders whose prospects are all on Google or Microsoft, and who want the pool to match.
- How it prices: per slot, banded by count, across three billing periods. See the bands below.
- Standout capability: a warmup network with no consumer mailboxes in it, which is higher signal if your recipients are all business addresses.
| Slots | Monthly | Quarterly | Annual |
|---|---|---|---|
| 1 to 10 | $12/slot | $10/slot | $9/slot |
| 11 to 50 | $11/slot | $9/slot | $6/slot |
One free slot is included. Placement testing is separate, one free test a month, then paid plans on top.
Pros
- Cheapest per-slot pricing here, and it halves to $6 on an annual plan past 10 slots
- One free slot, so you can try it properly
- The Google and Microsoft only pool is a real differentiator
- Blacklist scanning and AI warmup content included
Cons
- No use at all if you send from Zoho, SES or SendGrid
- Placement testing costs extra on top
- Daily volume limits per slot aren’t published
Verdict: The best-value warmup here if your stack is Google and Microsoft only. Unusable if it isn’t.
| Area | Warmforge | Mailivery |
|---|---|---|
| Pricing model | Per slot, banded | Flat, by shared daily volume |
| Cost at 15 mailboxes | $165/mo monthly, $90 on annual | $79/mo (Professional, 800/day) |
| Per-mailbox daily cap | Not published | 100/day Starter, 250/day above |
| Placement testing | 1 free test/mo, then paid | Included, 10 to 100 credits by plan |
| Provider coverage | Google Workspace and Microsoft 365 only | Gmail, Workspace, M365, SMTP, SendGrid |
| Free plan or trial | 1 free slot | 7-day trial |
5. Warmy.io
Warmy is the widest deliverability suite in this set, and the only one that splits its warmup network into separate B2B and B2C pools. It’s also the only one that won’t tell you what it costs.
- Best for: teams who send to consumer inboxes as well as business ones, and want the pool to reflect that.
- How it prices: per inbox, by volume, quote only. You book a demo or start the 7-day trial to see a number.
- Standout capability: genuinely separate B2B and B2C warmup pools, plus Google Postmaster integration and a named deliverability expert on higher tiers.
Pros
- The B2C pool has no real equivalent on this page
- Seed-list placement testing included
- Deliverability monitoring with actual recommendations
- 7-day trial, no card
Cons
- No published pricing, so it can’t be compared on this page’s axis
- Per-inbox economics get expensive at scale
- The B2C pool only earns its cost if you send B2C
Verdict: The pick if you send to consumer mailboxes. Otherwise you’re paying a suite premium for warmup you can get cheaper.
| Area | Warmy.io | Mailivery |
|---|---|---|
| Pricing model | Per inbox, quote only | Flat, by shared daily volume |
| Cost at 15 mailboxes | Not published | $79/mo (Professional, 800/day) |
| Per-mailbox daily cap | By plan, not published | 100/day Starter, 250/day above |
| Placement testing | Included, seed list | Included, 10 to 100 credits by plan |
| Provider coverage | Gmail, Outlook, Yahoo and more | Gmail, Workspace, M365, SMTP, SendGrid |
| Free plan or trial | 7-day trial, no card | 7-day trial |
6. Warmbox
Warmbox sells inboxes in fixed blocks of 1, 3 or 6, with team seats attached. Its provider coverage is the widest on this page.
- Best for: a small agency with a stable client roster and mail coming from unusual places.
- How it prices: Solo $19/mo for 1 inbox at 50 a day. Start-up $79 for 3 inboxes at 250 a day. Growth $159 for 6 inboxes at 500 a day, custom above that. Annual takes 12 to 20% off.
- Standout capability: warms mailboxes on Gmail, Outlook, Yahoo, iCloud, Yandex, Zoho, SendGrid, Sendinblue, Amazon SES, Mailgun and plain SMTP.
Pros
- The broadest provider and relay support on this page
- Team seats included in every block
- Simple to set up and stays out of the way
Cons
- Fixed blocks mean seven mailboxes costs you twelve
- 500 a day on the top block caps a growing fleet
- Anything above six inboxes is a custom quote
Verdict: Good if your inbox count is stable and your providers are unusual. Awkward if you’re growing.
| Area | Warmbox | Mailivery |
|---|---|---|
| Pricing model | Per plan, inbox tiers | Flat, by shared daily volume |
| Cost at 15 mailboxes | Custom pricing above 6 inboxes | $79/mo (Professional, 800/day) |
| Per-mailbox daily cap | Set by plan tier | 100/day Starter, 250/day above |
| Placement testing | Not offered | Included, 10 to 100 credits by plan |
| Provider coverage | Gmail, Outlook, Yahoo, iCloud, Zoho, SES, SMTP | Gmail, Workspace, M365, SMTP, SendGrid |
| Free plan or trial | Trial available | 7-day trial |
7. Instantly
Instantly is a cold email sending platform with warmup included rather than a warmup tool you buy separately. That changes what you’re comparing.
- Best for: teams choosing a sending platform anyway, who’d rather not run a second subscription.
- How it prices: warmup comes with the sending plans. Growth is $47/mo monthly, or $37.60/mo on annual billing, with unlimited email accounts and warmup described as unlimited at every tier.
- Standout capability: unlimited connected accounts and unlimited warmup at $47. That is the cheapest way to warm a large fleet on this page, by a wide margin.
Pros
- Cheapest per-mailbox economics here once you pass ten inboxes
- One subscription instead of two
- Warmup and sending share the same account list
Cons
- You’re buying a sending platform, so it’s wrong if you have one
- The per-inbox daily cap isn’t published; third parties report ~40/day
- Inbox placement is a separate paid product
- Warmup controls are shallower than a dedicated tool’s
Verdict: The right answer if you’re picking a sequencer today. The wrong one if you just want warmup.
| Area | Instantly | Mailivery |
|---|---|---|
| Pricing model | Bundled with sending | Flat, by shared daily volume |
| Cost at 15 mailboxes | $47/mo, warmup included | $79/mo (Professional, 800/day) |
| Per-mailbox daily cap | ~40/day reported | 100/day Starter, 250/day above |
| Placement testing | Separate paid product | Included, 10 to 100 credits by plan |
| Provider coverage | Gmail, Outlook, SMTP | Gmail, Workspace, M365, SMTP, SendGrid |
| Free plan or trial | 14-day trial | 7-day trial |
Tools That Did Not Make the Cut
4 credible products that don’t replace Mailivery for the reasons people actually leave it.
- Mailwarm starts at $69/mo for a single account at 50 warmup emails a day, with no free trial. A hard sell against Mailivery’s entry plan.
- InboxAlly is a different job. It routes real campaign mail to seed inboxes to repair burned domains, from $149/mo per sender profile.
- Folderly is enterprise-priced per mailbox on an annual commitment.
- Lemwarm is strongest as a retention feature for existing Lemlist customers, and prices per inbox, the wrong direction for anyone leaving a flat-volume tool.
What Mailivery Actually Costs Per Warmup Email
Both Mailivery and TrulyInbox sell shared daily volume, so comparing them per mailbox is meaningless. The honest unit is what you pay for one warmup email a day.
| Plan | Monthly | Daily volume | Per warmup email |
|---|---|---|---|
| Mailivery Starter | $29 | 200 | $0.145 |
| TrulyInbox Starter | $29 | 200 | $0.145 |
| Mailivery Professional | $79 | 800 | $0.099 |
| TrulyInbox Growth | $99 | 1,000 | $0.099 |
| Mailivery Business | $199 | 2,500 | $0.080 |
| TrulyInbox Scale | $199 | 3,000 | $0.066 |
| TrulyInbox Scale+ 5K | $479 | 5,000 | $0.096 |
Read the pairs. At the entry tier the two are identical to the tenth of a cent. At the middle tier they’re within 0.2%.
If you’re on Mailivery Starter or Professional and looking to save money, you won’t. That’s not what the switch is for.
The gap opens at the top. The same $199 buys 3,000 warmup emails a day from us against 2,500 from Mailivery, about 17% more volume for the money.
Note the last row honestly: Scale at $199 is the best rate on this table, and Scale Plus is not cheaper per email. Scale Plus buys ceiling, not efficiency. Mailivery stops at 2,500 a day; TrulyInbox runs to 20,000, and that headroom is what the higher tiers are for.
That’s why TrulyInbox sits above Mailivery despite matching list prices.
One caveat on the arithmetic. We recommend a 2:1 warmup-to-cold ratio and Mailivery recommends 1:1, and the reasoning is in our email warmup guide. Following ours doubles the volume you need to buy, whichever tool you pick.
Why Teams Look for a Mailivery Alternative
- The shared volume runs into the per-mailbox ceiling. This is why most people arrive here. Starter’s 200 a day with a 100-per-mailbox cap works for two mailboxes and falls apart at ten.
- The reply rate is capped at 30% on the entry plan. Reply rate is a warmup quality lever, not a cosmetic setting, and the entry plan holds it well below the 55% available above it.
- The ceiling is 2,500 a day. Fine for most teams. A hard stop if you’re running forty mailboxes at real volume.
- Every mailbox connects one at a time. There’s no domain-wide delegation and no tenant-wide admin consent, so onboarding a Workspace of eighty means eighty separate authorisations.
- The pool is mixed-provider, and its size is disputed. Mailivery warms across a peer-to-peer network spanning Gmail, Yahoo and others, which is lower signal than a Google and Microsoft only pool if your prospects sit on Workspace and Microsoft 365. Mailivery states a network of more than 100,000 mailboxes; a competitor puts it nearer 30,000. Neither figure is independently audited, so treat both as claims.
- Public reviews name recurring frustrations. Reviewers mention provider support skewed toward Gmail, slow support at times, gaps at enterprise scale, and missing inbox rotation. Mailivery sits at 4.5 on G2 from 17 reviews, which is a good rating on a thin sample, so read the lowest-rated ones rather than the average.
How We Picked These Tools
Six criteria, applied the same way to every tool including ours.
- Warmup pool composition, which providers the network is made of, and whether the vendor discloses it
- Real cost once every mailbox is counted, not the headline price
- Per-mailbox control and caps, including daily volume ceilings and reply-rate limits
- Placement or reputation visibility, whether you can see where mail lands, or only that warmup ran
- Standalone engine or bundled feature, since those are different purchases
- Public review evidence, with the count as well as the rating
Which Tools Cover Your Email Providers
Provider coverage removes tools from your shortlist before price comes into it.
Google and Microsoft only pools: Warmforge, and MailReach’s network is mostly these two. Higher signal for B2B, because that’s where your prospects are. Not an option if you send from Zoho, SES, SendGrid or Yahoo.
Broad SMTP coverage: TrulyInbox, Warmbox and Mailwarm. More flexible, and the pool quality is mixed by definition.
In the middle: Mailivery supports Gmail, Google Workspace, Microsoft 365, SMTP and SendGrid, warming across a mixed peer-to-peer pool.
Which One Should You Pick
Answer four questions about yourself first.
How many mailboxes are you warming? What’s your total daily volume at the ratio you believe in? Do you need to see inbox placement, or only to run warmup? And are you picking a sending platform anyway?
| If you need | Use |
|---|---|
| Flat pricing across a large fleet of mailboxes | TrulyInbox |
| The cheapest warmup for one or two mailboxes | Warmforge or Warmup Inbox |
| Warmup plus real inbox placement testing | MailReach, or stay on Mailivery |
| A Google and Microsoft only warmup pool | Warmforge |
| Warmup for Zoho, SES, iCloud or unusual SMTP | TrulyInbox or Warmbox |
| Warmup for consumer inboxes as well as business | Warmy.io |
| More than 2,500 warmup emails a day | TrulyInbox |
| To connect a whole Workspace or Microsoft tenant at once | TrulyInbox |
| An embeddable warmup engine under your own product | Stay on Mailivery |
| Warmup bundled with your sending platform | Instantly |
- If you run an agency with many client domains, per-inbox pricing is what hurts. Every client you onboard raises your cost of goods. Flat volume is the right shape, sized on total volume across the whole roster.
- If you’re an in-house SDR team with a fixed domain set, you probably have fewer mailboxes at higher volume each. Watch the per-mailbox cap rather than the total. If placement visibility matters, MailReach earns its premium here.
- If you’re a solo sender with one or two inboxes, don’t buy a flat-volume plan. Warmforge’s free slot or Warmup Inbox’s entry tier costs less than any tier here.
- If you need a warmup engine underneath your own product, stay where you are. Mailivery’s REST API and webhooks are built for exactly that.
TrulyInbox’s own free plan is enough to see a dashboard, not to warm a working mailbox.
What to Check Before You Switch Warmup Tools
Warmup continuity is the failure mode nobody writes about. Reputation is built by consistent engagement. So a gap between stopping one tool and starting another, while campaigns keep sending, costs more than a week of double billing.
- Don’t stop before you start: run both platforms in parallel for a few days if billing allows, so no mailbox is ever sending cold with no warmup behind it.
- Recount your total daily volume: mailbox count times per-mailbox daily volume, at the ratio you follow. And recount before you pick a tier, not after.
- Re-set the ramp deliberately: the new tool doesn’t inherit your old settings.
- Check provider coverage first: if you send from anything other than Google and Microsoft. Zoho, SES and SendGrid are where migrations break.
- Keep reply rate comparable: across the switch, or you won’t know whether placement moved because of the tool or because of a setting you changed.
Fix authentication before any of this. If SPF, DKIM or DMARC is broken, no warmup tool will fix your placement. You’ll blame the migration for a problem that was already there.
Our 41-point deliverability checklist covers the full audit.
The mailbox calculator and warmup ROI calculator will size the volume numbers above against your own sending.
Why Is TrulyInbox the Best Alternative to Mailivery?
For most teams leaving Mailivery, TrulyInbox is the closest match.
5 reasons, and one place where it isn’t.
- No per-mailbox ceiling: the constraint that breaks Mailivery plans across a fleet doesn’t exist here. A plan’s volume goes where you point it.
- A free plan with no credit card: connect a mailbox and see the dashboard before you decide anything.
- More headroom at both ends: reply rate reaches 60% on Scale and 65% on Scale Plus against Mailivery’s 55%, and volume runs to 20,000 a day where Mailivery stops at 2,500.
- Better rate at the top tier: $199 buys 3,000 warmup emails a day against 2,500, which is about 17% more volume for the same money.
- Bulk tenant connect: connect a whole Google Workspace or Microsoft tenant in one flow. Mailivery has no bulk path at all, so eighty mailboxes means eighty separate authorisations.
And where it isn’t. Mailivery includes inbox placement testing and we don’t offer it yet.
If you’re building warmup into your own product, or you need placement testing, that’s a real reason to stay. So is the entry tier, where the two of us cost exactly the same.
Connect a mailbox on the free plan, no credit card, and compare it against the one you’re already paying for.
Frequently Asked Questions
What is the best Mailivery alternative?
TrulyInbox, for most teams, because it keeps the flat-volume model you already chose and removes the per-mailbox cap that usually prompted the search. It also has a forever-free plan and runs to 20,000 warmup emails a day. The honest exception is placement testing. Mailivery includes it and TrulyInbox doesn’t, so if you need to see where mail lands, MailReach is the better move at under ten mailboxes.
Is there a free Mailivery alternative?
TrulyInbox has a forever-free plan for one account at 10 warmup emails a day, with no credit card. Warmforge gives you one free mailbox slot. Both are enough to judge a dashboard and watch one mailbox move. Neither warms a working fleet, and any page saying otherwise is selling something. Warmup Inbox and Warmy offer 7-day trials with no card, which is shorter than warmup takes to show anything.
How much does Mailivery cost?
Starter is $29/mo for 200 warmup emails a day shared, Professional $79 for 800, and Business $199 for 2,500. Yearly billing saves 25%, bringing those to $21.75, $59.25 and $149.25. Watch the per-mailbox cap rather than the total: 100 a day on Starter, 250 above it. That cap, not the headline volume, is what decides how many mailboxes a plan can actually warm.
Do I actually need a standalone warmup tool?
Not always. If you’re buying a sending platform anyway and it includes warmup, that may be enough. Instantly bundles it at $47 with unlimited accounts. A standalone tool earns its place in three cases:
- Your sender has no warmup of its own.
- You want deeper controls and reporting than a bundled feature gives.
- You need to warm mailboxes you send from elsewhere.
How many warmup emails per day do I need per inbox?
It depends on your cold volume and which guidance you follow. Mailivery recommends 1:1, so 50 warmup emails for 50 colds. We recommend 2:1, so 100 warmups for 50 colds. That difference doubles your volume requirement, so it changes which plan you need and what it costs. We arrived at 2:1 from our own testing. A 1:1 ratio dropped inbox placement below 50%, and moving to 2:1 recovered it. Multiply by mailbox count to get the total daily volume every pricing decision here depends on.
All pricing checked against each vendor’s own pricing page on 31 August 2026, quoted as monthly list price unless stated. Pricing and features change; verify before relying on them.
