Warmerly
Every spam-placed warmup mail is moved to the inbox after 10 to 120 minutes.
Warmerly
Mailivery
One-to-one · Spam rescue
Spam rescue
One row, in depth: what each tool does, the verified numbers, and who each suits.
Mailivery details read from its pricing page, home page, product pages and API page on 21 October 2026.
Warmerly
Every spam-placed warmup mail is moved to the inbox after 10 to 120 minutes.
Mailivery
It says it rescues emails from spam back to the inbox; no timing is given.
The short answer
Spam rescue, in one look.
Warmerly moves every spam-placed warmup mail to the inbox after 10 to 120 minutes, marks it read, starred and important, and queues a reply, and it never touches campaign mail. Mailivery says it rescues emails from spam back to the inbox, marks them safe and replies positively, with no timing, no rescue counts and no statement on campaign mail. Last checked 22 October 2026.
Mailivery
It says it rescues emails from spam back to the inbox; no timing is given.
The picture
Drawn side by side.
From spam to inbox
Minutes between a warmup email landing in spam and it being moved out
WarmerlyMailivery
Warmerly10 to 120 minutes (10 to 20 for a mailbox's first email)
SpamInbox
0120 min
MailiveryRescue stated, timing not published
SpamInbox
Warmerly timings come from its warmup code. Mailivery's pages say it rescues emails from spam and give no timing.
How Warmerly does it
Warmerly, in detail.
Rescue is automatic and unconditional for warmup mail between Warmerly mailboxes: every message found in spam is recovered, marked, moved and answered, after a delay of 10 to 120 minutes that is published.
01
Every spam-placed warmup mail
The processor recovers any warmup message found in a recipient's spam or junk folder. It never touches campaign mail to real prospects.
Warmerly product, checked 21 October 2026
02
What a rescue does
It marks the message read, starred and important and moves it to the inbox. On Gmail, moving out of Spam is the Not spam signal.
Warmerly product, checked 21 October 2026
03
When it happens
Each message has a read delay of 10 to 120 minutes, and the first email of a mailbox is read after 10 to 20 minutes.
Warmerly product, checked 21 October 2026
04
A reply follows
After a rescue a reply is queued unless the thread is at depth 3.
Warmerly product, checked 21 October 2026
05
Four steps, in order
First the junk keywords are removed and the not-junk keywords added, then the message is marked read, starred and important, then it is moved to the inbox, then a reply is queued. Servers differ on which keywords they accept, so the first step is best effort and its errors are ignored.
Warmerly product, checked 21 October 2026
06
No sampling
Rescue is unconditional. Every spam-placed warmup message is recovered, because a message left in spam keeps teaching the filter that the sender is junk.
Warmerly product, checked 21 October 2026
07
The folders it looks in
The processor checks the recipient's spam folder under the names providers use: [Gmail]/Spam, Junk, Spam and Junk Email.
Warmerly product, checked 21 October 2026
08
Rescues are counted
The job is recorded as delivered to spam and opened, so a rescue still counts in placement and rescue statistics.
Warmerly product, checked 21 October 2026
09
When no reply is queued
The reply is queued whatever the mailbox's usual reply probability, but it is skipped at thread depth 3, when the recipient is not active or ageing with warmup on, and when a hosted mailbox would be answering a low-reputation sender.
Warmerly product, checked 21 October 2026
10
Warmup mail only
Only warmup mail between Warmerly mailboxes is rescued. Campaign mail to real prospects is never moved, marked or replied to.
Warmerly product, checked 21 October 2026
How Mailivery does it
Mailivery, in detail.
Spam rescue is described on four pages as part of the warm-up engine: it moves misplaced mail to the inbox, marks it safe and replies, and the dashboard shows how many emails were recovered. No page gives a delay, a rescue rate or a rule for real campaign mail.
01
Moves emails out of spam
Its warm-up page says when your emails land in spam, we rescue them back to the inbox.
mailivery.io/email-warm-up · read 21 October 2026
02
Marks safe and replies
Its pricing FAQ says the warm-up moves emails out of spam or promotions, marks them safe and replies positively.
mailivery.io/pricing · read 21 October 2026
03
Marked as important
Its warm-up page shows activity such as opens, positive replies and marked as important by recipient.
mailivery.io/email-warm-up · read 21 October 2026
04
Part of the how-it-works steps
Its how-it-works page lists, among the things the system does automatically, that it moves messages from spam into the inbox, and it says every interaction tells Gmail and Outlook that the sender is legitimate.
mailivery.io/how-it-works · read 22 October 2026
05
A live feed example
The warm-up page shows a sample activity feed with entries such as Rescued from spam, moved to inbox, and Marked as important by recipient. It is an illustration, not data.
mailivery.io/email-warm-up · read 22 October 2026
06
Rescue in the 14-day story
The warm-up page places spam rescue in days 4 to 10 of its 14-day story, saying it pulls misplaced emails back to the inbox while engagement signals strengthen.
mailivery.io/email-warm-up · read 22 October 2026
07
Opens or moves, then replies
Its home page FAQ says it opens or moves messages if they land in promotions or spam and generates positive replies.
mailivery.io · read 22 October 2026
08
Recovered mail in the dashboard
Every plan card on its pricing page lists an analytics dashboard to see how many of your emails got recovered.
mailivery.io/pricing · read 22 October 2026
09
A customer story, stated by Mailivery
The warm-up page says an outreach platform took 100 burned mailboxes from 92% spam to 4.1% in 3 weeks. It is a Mailivery marketing claim with no method shown, so we have not checked it.
mailivery.io/email-warm-up · read 22 October 2026
10
Inbox kept tidy
Its how-it-works FAQ says warm-up emails are organised into a dedicated folder or label, apart from real correspondence.
mailivery.io/how-it-works · read 22 October 2026
What Mailivery does not say
We looked, and found no statement on these. That is about its published pages only, not about the product.
- How long a rescue takes
- Whether rescue applies to campaign mail or only warm-up mail
- Rescue counts or rates
- Whether the reply after a rescue is always sent
- How the dashboard counts a recovered email
- The method behind the 92% to 4.1% customer story
The numbers
Only what we could verify.
| Measure | Warmerly | Mailivery |
|---|---|---|
| Spam rescue | Every spam-placed warmup mail is moved to the inbox after 10 to 120 minutes. | It says it rescues emails from spam back to the inbox; no timing is given. |
| Delay before rescue | 10 to 120 minutes | Not stated |
| Mail rescued | Every spam-placed warmup mail | Emails that land in spam, per its page |
| Campaign mail touched | Never | Not stated |
| Rescue sampling | None, every spam-placed warmup mail | Not stated |
| Reply after a rescue | Queued, except at thread depth 3 and in two other cases | Positive replies, per its pages |
| Marks applied | Read, starred, important | Safe and important, per its pages |
| Recovered mail shown | Counted in placement and rescue stats | Analytics dashboard of recovered emails |
In practice
What it means for you.
Our reading of the facts above. Not a promise, and not the only reasonable reading.
Rescue works on warm-up mail
In both tools the rescue is of warm-up mail. Neither can pull your real campaign mail out of a prospect's spam folder.
Warmerly states the delay
10 to 120 minutes is the published range, which is easy to check in the app.
A message delivered at 09:00
With Warmerly's published delay of 10 to 120 minutes, a warmup message that lands in spam at 09:00 is rescued between 09:10 and 11:00, and the reply follows after that. Mailivery's pages give no window to compare.
Reading Mailivery's customer story
Its page says 92% spam fell to 4.1% in 3 weeks, a drop of 87.9 points. It is one customer's result, written by the vendor, and it describes a sender that had burned 100 mailboxes. It is no guide to what a new mailbox will see in either tool.
Look at what was moved
Warmerly states its marks, which are read, starred and important, and on Gmail the move out of Spam is the Not spam signal. Mailivery's pages name safe and important marks. In either tool, open the warmup folder for a day and look at what was moved before you rely on it.
Rescue does not fix a bad campaign
Warmup mail is rescued, campaign mail is not, in either tool as far as the pages say. If real prospects see spam, the causes are the list, the copy and the records, so check DNS and run a placement test as well.
Who it suits
Pick the one that fits.
Warmerly
Warmerly is the better fit if
- You want the rescue timing published
- You want a clear line that campaign mail is never touched
- You want the rescue steps and the delay written down
- You want the marks (read, starred, important) stated
- You want rescue counted in the same app as placement
Mailivery
Mailivery is the better fit if
- You want spam rescue described with replies and importance marks
- You prefer its wider network of partners
- You want a dashboard line for how many emails were recovered
- You want rescue described together with the 14-day ramp story
- You want warm-up mail kept in a dedicated folder or label
Questions
Does Warmerly rescue my campaign emails from spam?
No. It only moves warmup mail between Warmerly mailboxes. It never touches campaign mail to real prospects.
Does Mailivery state how fast it rescues?
No. Its pages say it rescues emails from spam and give no timing.
What does Warmerly do to a warmup mail in spam?
It removes the junk keywords where the server allows, marks the message read, starred and important, moves it to the inbox and queues a reply.
How long until a Warmerly rescue happens?
Each message has a read delay of 10 to 120 minutes and the rescue happens after it, so never within minutes of delivery.
Does Mailivery reply after a rescue?
Its pricing FAQ says it moves the email, marks it safe and replies positively. It does not say whether a reply is sent every time.
Sources
Mailivery 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.
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