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Warmerly Smartlead
One-to-one · Highest published send volume

Highest published send volume

One row, in depth: what each tool does, the verified numbers, and who each suits.

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Smartlead details read from its pricing page, home page and help centre on 17 and 19 October 2026.

Warmerly

No meter; each mailbox has its own daily campaign limit, 30 by default

Smartlead

500,000 a month on Unlimited Prime ($379)

The short answer

Highest published send volume, in one look.

Warmerly publishes no send volume at all, since paid plans do not meter sends. Volume is set by mailbox count and each mailbox's daily limit (30 by default), roughly 90,000 a month on Agency's 100 mailboxes once they are established. Smartlead publishes up to 500,000 emails a month, on Unlimited Prime at $379. Smartlead is ahead at high volume, and at 90,000 a month its Pro plan lists a lower price than Agency. Last checked 19 October 2026.

Warmerly

No meter; each mailbox has its own daily campaign limit, 30 by default

SmartleadSmartlead ahead on this row

500,000 a month on Unlimited Prime ($379)

The picture

Drawn side by side.

What each volume costs

Published monthly price against emails sent a month. Drag the slider to see which plan covers your volume on each side.

WarmerlySmartlead
WarmerlyagainstSmartlead

Warmerly's steps assume mailboxes sending the default 30 a day, every day of a 30 day month, so Starter's 5 mailboxes reach about 4,500, Growth's 25 about 22,500 and Agency's 100 about 90,000. Beyond 100 mailboxes, Max is priced on a call and we publish no price or volume for it. Smartlead lists unlimited email accounts on every plan, so its steps are set by its monthly email count. At 90,000 a month, Smartlead Pro at $94 lists a lower price than Warmerly Agency at $179. At 150,000 and above, only Smartlead publishes a price.
Which plan covers each monthly volume, at 30 emails a day per mailbox
Emails a monthWarmerlySmartlead
4,5005 mailboxes at 30 a day, Starter $19Base, $39
6,0007 mailboxes at 30 a day, above Starter's 5, so Growth $49Base, $39
22,50025 mailboxes at 30 a day, Growth $49Pro, $94
90,000100 mailboxes at 30 a day, Agency $179Pro, $94
150,000167 mailboxes at 30 a day, above Agency, so a Max callUnlimited Smart, $174

Prices are monthly billing, read on 19 October 2026. The plans are not like for like: Warmerly's price covers mailbox slots, client workspaces and other features, Smartlead's covers email volume and contacts. Mailboxes themselves come from your email provider or an add-on on either side.

How hard a mailbox is pushed

Emails a day per mailbox. One shared ruler, from 0 to 75, with where each company's own numbers sit.

WarmerlySmartlead

WarmerlyDefault daily limit per mailbox, changeable

30

SmartleadMessages per day setting, recommended 40 to 50 including warm-ups

4050

SmartleadIts benchmark of real mailboxes: cold emails a day, January to June 2026

4814244270
0255075 a day
  • Warmerly, 30: each mailbox's default daily campaign limit. You can change it, and the ramp and reputation brake can lower it.
  • Smartlead, 40 to 50: the range help article 58 recommends for a mailbox's Messages per day, counting cold emails and warm-ups together. Its benchmark page advises 50 cold emails a day or fewer.
  • Smartlead data, 4 to 70: the quietest 10 per cent of mailboxes send 4 or fewer cold emails a day, the quietest 25 per cent 8 or fewer, the median is 14, the busiest 25 per cent send 24 or more, the busiest 10 per cent 42 or more and the busiest 5 per cent 70 or more. Half of all mailboxes send between 8 and 24.
Smartlead publishes the benchmark and sells the product, so the 50 is its own guidance, not a rule it enforces. We found no benchmark of this kind from Warmerly.

Mailboxes it takes

How many mailboxes a monthly volume needs at three daily paces. The same arithmetic applies to both products.

WarmerlySmartlead
Mailboxes needed for each monthly volume, at 14, 30 and 50 emails a day per mailbox, in a 30 day month
Emails a monthWarmerly plan at 30 a daySmartlead planAt 14 a day (its median)At 30 a day (Warmerly default)At 50 a day (its advised ceiling)
6,0007 mailboxes at 30 a day, above Starter's 5, so Growth $49Base, $391574
22,50025 mailboxes at 30 a day, Growth $49Pro, $94542515
90,000100 mailboxes at 30 a day, Agency $179Pro, $9421510060
150,000167 mailboxes at 30 a day, above Agency, so a Max callUnlimited Smart, $174358167above Agency100
500,000556 mailboxes at 30 a day, above Agency, so a Max callUnlimited Prime, $3791,191556above Agency334
Each cell is the monthly volume divided by the daily pace times 30 days, rounded up (our arithmetic). Darker cells need more mailboxes. Smartlead lists unlimited accounts, so a bigger fleet does not change its plan, but you still have to connect and warm every mailbox. Warmerly's Agency plan connects up to 100 mailboxes; above that is a Max call.
How Warmerly does it

Warmerly, in detail.

No published monthly send figure. The ceiling is mailboxes times the daily limit.

01

No meter to publish

Paid plans have no monthly send cap, so there is no top figure to quote. We do not call this unlimited.

Warmerly product, checked 19 October 2026

02

The daily limit sets the pace

Each mailbox has a daily campaign limit, 30 by default and changeable. The ramp and the reputation brake can tighten it.

Warmerly product, checked 19 October 2026

03

Agency arithmetic

100 mailboxes at 30 a day is 3,000 a day, about 90,000 a month (our arithmetic, every mailbox at the default every day of a 30 day month). Raising the daily limit would raise this, subject to the ramp and brake.

Warmerly product, checked 19 October 2026

04

Beyond 100 mailboxes

Max is priced on a call for more than 100 mailboxes. We publish no volume or price for it.

Warmerly product, checked 19 October 2026

05

What 500,000 a month would take

At 30 a day, 500,000 a month needs about 556 mailboxes, which is above Agency, so it would be a Max conversation. At 50 a day it would be about 334 mailboxes (our arithmetic).

Warmerly product, checked 19 October 2026

06

Other limits still apply

Active prospects are capped by plan: 5,000 on Starter, 50,000 on Growth, 250,000 on Agency, with 100,000 leads in any one Agency campaign.

Warmerly product, checked 19 October 2026

07

New mailboxes ramp first

A campaign's ramp starts at 3 emails per mailbox on sending day 1, adds 1 a day up to 15, and is on by default for projects with a mailbox under 14 days of warmup. The monthly figures here are for established mailboxes.

Warmerly product, checked 19 October 2026

08

The ramp can only tighten the limit

The cap used is the smaller of the mailbox's daily limit and the ramp cap, so it never lets a mailbox exceed its own limit.

Warmerly product, checked 19 October 2026

How Smartlead does it

Smartlead, in detail.

The ladder is 6,000, 90,000, 150,000 and 500,000 emails a month, on Base, Pro, Unlimited Smart and Unlimited Prime. Mailboxes are unlimited on every plan.

01

Prime tops out at 500,000

Unlimited Prime lists 500,000 emails a month at $379 on monthly billing, or $315 a month on yearly billing. No plan above it is listed.

smartlead.ai/pricing · read 19 October 2026

03

Unlimited email accounts

Every plan lists unlimited email accounts, so the monthly email count, not the mailbox count, is what the plan limits.

smartlead.ai/pricing.md · read 19 October 2026

04

Managed volume above that

SmartServices, a managed offering, lists Growth (50,000 emails a month) and Scale (100,000 emails a month). No price is shown and enquiries go through a Book a strategy call button.

smartlead.ai/pricing · read 19 October 2026

07

Pace in practice

Its benchmark page says the median mailbox sends 14 cold emails a day, half send between 8 and 24, the busiest 10 per cent send 42 or more and the busiest 5 per cent 70 or more. It advises 50 cold emails a day or fewer per mailbox. The data covers January to June 2026 and more than 850 million emails.

smartlead.ai/benchmarks/how-many-cold-emails-per-day-per-mailbox · read 19 October 2026

09

Dedicated servers cost extra

SmartServers is listed at $39 per server per month with a dedicated IP. It is a separate add-on, not part of a plan.

smartlead.ai/pricing.md · read 19 October 2026

What Smartlead does not say

We looked, and found no statement on these. That is about its published pages only, not about the product.

  • A plan above 500,000 emails a month on a published price: none found. The pricing page text mentions no Enterprise or custom plan above it.
  • A hard upper bound for the Messages per day setting: not found.
  • Whether SmartServices prices are published anywhere: none found on the pricing page.
  • Whether unused email credits roll over: not stated.

Watch: Smartlead in its own words

Videos from Smartlead's own channel. They load from YouTube only when you press play.

Open on YouTube · Listed on Smartlead's own YouTube channel feed on 19 October 2026 (published 6 October 2026). Its description covers inboxes, domains, setup cost and sending at volume. We have not checked the claims made in the video.
The numbers

Only what we could verify.

Highest published send volume: Warmerly and Smartlead side by side. Warmerly is in the first column.
MeasureWarmerlySmartlead
Highest published send volumeNo meter; each mailbox has its own daily campaign limit, 30 by default500,000 a month on Unlimited Prime ($379)
Highest published monthly volumeNone published, no meter500,000 (Unlimited Prime, $379)
Highest plan price$179 (Agency, 100 mailboxes)$379
Rough ceiling at the top planAbout 90,000 a month (100 x 30 x 30, our arithmetic)500,000
Daily limit per mailbox30 by default, changeableA Messages per day setting, 40 to 50 recommended; its benchmark advises 50 or fewer cold emails
Mailboxes needed for 500,000 a month at 30 a dayAbout 556 (our arithmetic), beyond Agency, so a Max callUnlimited accounts on every plan
Mailboxes needed for 500,000 a month at 50 a dayAbout 334 (our arithmetic)334 at its advised ceiling (our arithmetic)
Mailboxes needed for 90,000 a month at 30 a day100 (Agency, $179)100 at 30 a day (our arithmetic); plan: Pro, $94
Mailboxes needed for 150,000 a month at 30 a dayAbout 167 (our arithmetic), beyond Agency, so a Max call167 at 30 a day (our arithmetic); plan: Unlimited Smart, $174
Plan price at 90,000 a month$179 (Agency)$94 (Pro)
Median mailbox pace in Smartlead's dataNot published14 cold emails a day
Busiest 5 per cent of mailboxes in its dataNot published70 or more cold emails a day
Managed volumeMax by call, no price or volume publishedSmartServices: 50,000 and 100,000 emails a month, no price shown
At the limitEach mailbox stops for the daySending stops until reset or upgrade
The plans

Every plan, side by side.

Warmerly

Free$01 mailbox · capped sends · no card
Starter$195 mailboxes · no cap on sends
Growth$4925 mailboxes · no cap on sends
Agency$179100 mailboxes · client workspaces · API

Smartlead

Base$396,000 emails · 2,000 contacts
Pro$9490,000 emails · 30,000 contacts
Unlimited Smart$174150,000 emails
Unlimited Prime$379500,000 emails

Per month, billed monthly. Every Smartlead plan lists unlimited email accounts; prices read on smartlead.ai/pricing on 17 October 2026 and re-checked on 19 October 2026.

In practice

What it means for you.

Our reading of the facts above. Not a promise, and not the only reasonable reading.

1

For high volume, Smartlead is ahead

Our reading: 500,000 emails a month on a published price is well beyond what Agency reaches at the default limit. If you send at that scale, Smartlead fits better.

2

At 90,000 a month the prices flip

Our reading: Smartlead Pro lists 90,000 emails for $94, while on Warmerly the same volume needs 100 mailboxes on Agency at $179. The comparison changes if you already have the mailboxes, and Smartlead's own advice is to add mailboxes to scale.

3

Both need mailboxes to send at scale

Our reading: Smartlead lists unlimited accounts, but at its advised 50 a day, 90,000 a month still needs about 60 mailboxes. The mailboxes themselves come from your email provider or an add-on on either side.

4

A bigger daily limit is an option, not a promise

Our reading: raising the daily limit on Warmerly raises the ceiling, but the ramp and reputation brake still apply, and sending harder from a mailbox is a deliverability risk.

5

Most senders never get near either

Our reading: Smartlead's median mailbox sends 14 a day, so a 20 mailbox fleet is about 8,400 a month, well inside both.

6

Check what you need before you pay for headroom

Our reading: the busiest 5 per cent of mailboxes in Smartlead's data send 70 or more a day. If you are nowhere near that, a plan with 500,000 emails is room you will not use.

Who it suits

Pick the one that fits.

Warmerly

Warmerly is the better fit if

  • You send at moderate volume and want no monthly counter.
  • You prefer to pace each mailbox gently.
  • You want volume tied to mailboxes you can see.
  • You do not need more than about 90,000 a month.
Smartlead

Smartlead is the better fit if

  • You need 150,000 to 500,000 emails a month on a published price.
  • You want a clear monthly figure to plan against.
  • You send high volume from a few mailboxes.
  • You want managed volume services above 100,000.
Questions
What is Smartlead's highest published volume?

500,000 emails a month on Unlimited Prime, at $379 a month.

What is Warmerly's highest volume?

None is published, since paid plans do not meter sends. At 100 mailboxes and 30 a day it is about 90,000 a month, by our arithmetic.

How many mailboxes would 500,000 a month need?

About 556 at 30 a day or 334 at 50 a day, by our arithmetic. That is beyond Agency, so a Max call.

Which is cheaper at 90,000 a month?

Smartlead Pro lists $94 against Warmerly Agency at $179, though Warmerly needs 100 mailboxes at 30 a day to reach it.

Sources

Smartlead pages were read on 19 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.

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