Warmerly
Every mailbox on the plan; the daily quota ramps from 4 to 50 over 30 days of sending
Warmerly
Mailshake
One-to-one · Email warmup
Email warmup
One row, in depth: what each tool does, the verified numbers, and who each suits.
Mailshake details read from its pricing page, home page, feature pages and help centre on 21 October 2026.
Warmerly
Every mailbox on the plan; the daily quota ramps from 4 to 50 over 30 days of sending
Mailshake
Unlimited warm-up on the three listed plans, using addresses Mailshake owns
The short answer
Email warmup, in one look.
Both warm every mailbox on the plan. Warmerly publishes its ramp: 4 warmup emails a day at day 0, rising to 50 at day 30, counted on days the mailbox really sent. Mailshake says warm-up is unlimited on its listed plans and warms through addresses it owns, but its pages give no daily volumes. Last checked 22 October 2026.
Mailshake
Unlimited warm-up on the three listed plans, using addresses Mailshake owns
The picture
Drawn side by side.
Warmup, day by day
Warmerly publishes the daily quota. Mailshake gives timing advice and no volumes.
WarmerlyMailshake
Warmerly: daily warmup quota
Warmup emails a day by day of sending, 0 to 30. Counts days the mailbox really sent.
Mailshake: timing advice in its help centre
Advice, not a schedule. Daily volumes are not stated on the pages we read.
Mailshake's article gives 1 to 2 weeks in one section and 2 to 3 weeks in another, and says some customers turn warm-up off after 30 to 60 days. Segment lengths here are not to scale.
| Tool | Warmup |
|---|---|
| Warmerly | Daily quota 4 at day 0, 8 at day 3, 15 at day 7, 25 at day 14, 35 at day 21, 50 at day 30 |
| Mailshake | Wait 7 or more days after creating the domain; Warm up at least 1 to 2 weeks before outreach; Keep it on afterwards; Daily volume or ramp: not stated |
On screen
What it looks like.
WarmerlySample data
How Warmerly does it
Warmerly, in detail.
A published ramp that counts real sending days, provider ceilings, unconditional spam rescue between network mailboxes, and a graduation rule that waits for 30 days of real sending. Warmup is never metered.
01
The ramp
The daily warmup quota is 4 at day 0, 8 at day 3, 15 at day 7, 25 at day 14, 35 at day 21 and 50 at day 30. It counts days the mailbox really sent, not calendar age.
Warmerly product, checked 21 October 2026
02
Spam rescue
A warmup mail that lands in spam is read, moved to the inbox and answered. Only warmup mail between Warmerly mailboxes is rescued, never campaign mail to real prospects.
Warmerly product, checked 21 October 2026
03
Never metered
Warmup is included on every mailbox the plan allows and is never metered.
Warmerly product, checked 21 October 2026
04
Where Warmerly is behind
Warmerly's warmup is mail between Warmerly mailboxes. Mailshake says its warm-up uses addresses it owns, and we cannot compare network size because neither side publishes one.
Warmerly product, checked 21 October 2026
05
Provider ceilings
Providers also set a ceiling on warmup volume: 40 a day for Gmail, 30 for Outlook, 25 for Zoho, and 50 for Namecheap or a custom server. Poor placement or a low health score slows the ramp.
Warmerly product, checked 21 October 2026
06
Graduation needs real days
A mailbox moves from aging to active after 30 days on which it really sent, not after 30 calendar days. A mailbox connected three months ago that never sent stays aging.
Warmerly product, checked 21 October 2026
07
Partners are other mailboxes in the network
Partners are other customers' mailboxes and mailboxes Warmerly runs. They are chosen by how busy they are, provider mix and volume, and the same partner is avoided within 72 hours. Two of your own mailboxes can be partners.
Warmerly product, checked 21 October 2026
08
Rescue is unconditional and delayed
Every warmup mail found in spam is rescued, with no sampling. Each job waits a 10 to 120 minute read delay first, so a rescue never lands within minutes of delivery.
Warmerly product, checked 21 October 2026
09
Launching before warmup finishes
A campaign whose mailboxes have under 14 days of warmup starts with a volume ramp of 3 emails per mailbox on day one, climbing as the mailbox warms.
Warmerly product, checked 21 October 2026
10
Health pauses a mailbox
A mailbox whose health stays below 60 for 2 days is paused, and resumes automatically after a 3-day cooldown if it did not need reconnecting.
Warmerly product, checked 21 October 2026
How Mailshake does it
Mailshake, in detail.
Unlimited warm-up through addresses Mailshake controls, with settings you choose, a spam score on the dashboard, and a long help article that tells customers what to do beside it.
01
Unlimited on listed plans
All three listed plans show unlimited email warmup. Its help article says subscribers get unlimited warm-up.
mailshake.com/pricing · read 21 October 2026
02
Network of its own addresses
The help article says your address sends to addresses Mailshake controls and the system automates the replies back, and marks warm-up mail that lands in spam as Not Spam.
docs.mailshake.com/article/303-how-does-warmupyour-email-work · read 21 October 2026
03
Timing advice
The article suggests waiting 7 or more days after creating a domain, running warm-up for at least 1 to 2 weeks before outreach and keeping it on afterwards, though some customers turn it off after 30 to 60 days. Another section says 2 to 3 weeks.
docs.mailshake.com/article/303-how-does-warmupyour-email-work · read 21 October 2026
04
How you connect it
The deliverability page says you connect a new or existing account over SMTP and set a daily sending volume.
mailshake.com/features/email-deliverability · read 21 October 2026
05
Stage the rollout
For a brand-new domain the article suggests connecting one email first, waiting a month, then connecting the rest.
docs.mailshake.com/article/303-how-does-warmupyour-email-work · read 22 October 2026
06
You cannot stop the replies
Replies from the warm-up network arrive in your inbox, and Mailshake says it cannot stop them because they are part of the process. Each message ends with the sentence Sent from Warmup Email Platform, which you can filter on.
docs.mailshake.com/article/303-how-does-warmupyour-email-work · read 22 October 2026
07
A spam score on the dashboard
The article says you can view your spam score on the dashboard, and that an older address with many warm-up emails going to spam probably had deliverability problems before.
docs.mailshake.com/article/303-how-does-warmupyour-email-work · read 22 October 2026
08
Not set and forget
The article says to send a small number of real, personalised emails after 2 to 3 weeks, to avoid sending from several tools at once, and not to leave warm-up idle. It was last updated on July 2, 2025.
docs.mailshake.com/article/303-how-does-warmupyour-email-work · read 22 October 2026
09
Automatic actions
The deliverability page says the tool opens, replies and removes from spam, and that you configure a daily sending volume to start.
mailshake.com/features/email-deliverability · read 22 October 2026
What Mailshake does not say
We looked, and found no statement on these. That is about its published pages only, not about the product.
- Daily warm-up volumes or a ramp
- How many addresses the warm-up network holds
- Whether warm-up counts against a plan's address limit
- The reply rate or open rate warm-up uses by default
- A warm-up health score or a graduation rule
- Per-provider volume ceilings
- How warm-up mail is kept apart from your own contacts
- A way to test inbox placement from the warm-up tool
Where the sources disagree
We report each version rather than pick one.
- Mailshake's warm-up article gives 1 to 2 weeks in one section and 2 to 3 weeks in another before sending real email.
- Mailshake's article recommends connecting one email and waiting a month for a brand-new domain, while its warm-up length advice for sending is 1 to 2 weeks in one place and 2 to 3 weeks in another.
The numbers
Only what we could verify.
| Measure | Warmerly | Mailshake |
|---|---|---|
| Email warmup | Every mailbox on the plan; the daily quota ramps from 4 to 50 over 30 days of sending | Unlimited warm-up on the three listed plans, using addresses Mailshake owns |
| Warmup included | Every mailbox on the plan | Unlimited on the three listed plans |
| Daily volume | 4 a day at day 0, 50 at day 30 | Set by you, no figures given |
| Spam rescue | Yes, on every warmup mail in spam | Marks warm-up mail Not Spam |
| Suggested time before outreach | Ramp is published, 30 days to 50 a day | At least 1 to 2 weeks, or 2 to 3 per another section |
| Provider ceiling on warmup | Gmail 40, Outlook 30, Zoho 25 a day | Not stated |
| Ramp length | 30 days of real sending | Not stated |
| Spam rescue delay | 10 to 120 minutes | Not stated |
| How long some customers keep it on | Kept on after campaigns start | Some turn it off after 30 to 60 days |
In practice
What it means for you.
Our reading of the facts above. Not a promise, and not the only reasonable reading.
Warm before you send
On either tool, start warm-up before real campaigns. Mailshake's own help says at least 1 to 2 weeks, and Warmerly's ramp reaches 15 a day at day 7.
Ask for the missing numbers
If daily warm-up volume matters to you, ask Mailshake. Its pages do not publish it.
Five Gmail mailboxes at day 30
The ramp reaches 50 a day at day 30, but the Gmail ceiling is 40. Five Gmail mailboxes therefore warm at up to 5 x 40 = 200 messages a day, and five Namecheap mailboxes at up to 5 x 50 = 250.
A week in
Warmerly's ramp is 15 a day at day 7 and 25 at day 14. Mailshake advises at least 1 to 2 weeks before outreach, so on Warmerly's published figures a mailbox warmed for 7 to 14 days is doing 15 to 25 warmup messages a day, while Mailshake publishes no figure to set against that.
Starting a fifth mailbox late
If you follow Mailshake's staging advice for a new domain, connect one address, wait a month, then connect the rest. The other four start about 30 days after the first, so a full set is not warm until roughly 30 days later than if all five began together. Warmerly's ramp counts each mailbox's own real sending days.
Filtering the noise
Mailshake says warm-up mail ends with one fixed sentence and suggests filtering on it. With either tool, set a mail rule early so warmup replies do not bury real ones.
Who it suits
Pick the one that fits.
Warmerly
Warmerly is the better fit if
- You want to see the ramp, day by day, before you start
- You want spam rescue and a health score beside the ramp
- You want the daily numbers, provider ceilings and graduation rule written down
- You want warmup mail rescued from spam on every message, with a health score to watch
- You want to keep warmup running while campaigns send, with campaign volume ramped for young mailboxes
Mailshake
Mailshake is the better fit if
- You want warm-up bundled in a sales engagement plan with phone and email
- You already use Mailshake and want warm-up in the same account
- You want warm-up on a plan with no stated cap and a phone dialer available
- You want a long help article of habits to pair with warm-up
- You already run outreach in Mailshake and want one account
Questions
Does Mailshake include email warm-up?
Yes, its pricing page lists unlimited email warmup on its three listed plans. Its pages do not publish daily volumes.
How long does Warmerly's warmup take?
The quota starts at 4 a day and reaches 50 at day 30 of real sending. The ramp is on the mailbox page.
Can I stop Mailshake's warm-up replies filling my inbox?
Mailshake says it cannot stop them, because they are part of warm-up. It suggests a mail filter on the sentence Sent from Warmup Email Platform.
How many mailboxes can I warm on Warmerly?
As many as your plan allows to connect: 1 on Free, 5 on Starter, 25 on Growth and 100 on Agency. Warmup is included on each and never metered.
How long before I can send campaigns on Warmerly?
You can launch at once. A campaign on mailboxes with under 14 days of warmup starts at 3 emails per mailbox on day one and climbs.
Sources
- Mailshake pricing page and its FAQ
- Mailshake help: how warm-up works
- Mailshake email deliverability page
Mailshake 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.
Free plan, no card. Paid plans: 7-day trial, first charge on day 8.