Warmerly
Every spam-placed warmup mail is marked read, starred and moved to the inbox after 10 to 120 minutes.
Warmerly
Warmup Inbox
One-to-one · Spam rescue
Spam rescue
One row, in depth: what each tool does, the verified numbers, and who each suits.
Warmup Inbox details read from its pricing page, home page, product pages, API page, integrations pages, help centre, legal pages and status page on 21 October 2026.
Warmerly
Every spam-placed warmup mail is marked read, starred and moved to the inbox after 10 to 120 minutes.
Warmup Inbox
Marked read and important, replied to and moved to the inbox, then filed after a 1 to 2 minute wait; no overall timing.
The short answer
Spam rescue, in one look.
Both rescue warmup mail that lands in spam, and both describe the same core move: mark it, reply, and put it in the inbox. Warmerly publishes the delay, 10 to 120 minutes after sending, says every spam-placed warmup message is rescued, and says it never touches campaign mail. Warmup Inbox describes the steps in a help article dated 1 May 2024, with a 1 to 2 minute wait before the message is filed, and gives no overall timing. The home page also uses the word rescue for removing a blacklist listing, which is a different thing. Last checked 21 October 2026.
Warmup Inbox
Marked read and important, replied to and moved to the inbox, then filed after a 1 to 2 minute wait; no overall timing.
The picture
Drawn side by side.
From spam to inbox
Minutes between a warmup email landing in spam and it being moved out
WarmerlyWarmup Inbox
Warmerly10 to 120 minutes (10 to 20 for a mailbox's first email)
SpamInbox
0120 min
Warmup InboxSteps stated, 1 to 2 minute wait, no overall timing
SpamInbox
Warmerly timings come from its warmup code. Warmup Inbox's help article lists the steps and gives only the wait inside them.
How Warmerly does it
Warmerly, in detail.
Automatic rescue of any warmup message found in a recipient's spam or junk folder, with a published delay, a reply that always follows, and no touching of campaign mail.
01
Every spam-placed warmup mail, no sampling
When the processor finds a warmup message in a recipient's spam folder (Gmail Spam, Junk or Junk Email), it recovers it. It used to rescue about 75 per cent. That was dropped because a message left in Spam keeps teaching the filter that the sender is junk.
Warmerly product, checked 21 October 2026
02
The order of steps
It removes the Junk keywords and adds NotJunk, best effort because servers differ. It then marks the message read, starred and important and moves it to the inbox. On Gmail, moving a message out of Spam is the Not spam signal.
Warmerly product, checked 21 October 2026
03
A published delay
Each job has a read delay of 10 to 120 minutes after sending, worked out from the job id so it is repeatable. A mailbox's first warmup email is read after 10 to 20 minutes. The rescue happens after that delay, never within minutes of delivery.
Warmerly product, checked 21 October 2026
04
How often it looks
The processor loop that does the work runs every 120 seconds by default. A rescue happens when the loop finds the message after its delay has passed, so the real gap includes up to two minutes of loop time.
Warmerly product, checked 21 October 2026
05
A reply always follows
After a rescue, a reply from the recipient is queued whatever the account's reply probability, unless the thread is at depth 3 or the recipient cannot reply. The reply is scheduled 20 to 90 minutes after the open.
Warmerly product, checked 21 October 2026
06
Counted, and limited to warmup
A rescued job is recorded as delivered to spam and opened, so rescues still show in placement and rescue stats. Only warmup mail between Warmerly mailboxes is rescued. Campaign mail to real prospects is never touched.
Warmerly product, checked 21 October 2026
How Warmup Inbox does it
Warmup Inbox, in detail.
Rescue is described as a sequence of moves by the network, and as an automatic step for blacklist listings. Timing is given only as a 1 to 2 minute wait inside the sequence.
01
The help article's six steps
When spam is found in the network's monitored spam folders, the article says the system marks it as read, flags it as important, replies to it, moves it to the inbox, waits 1 to 2 minutes, and then moves it to your Warmup Inbox folder.
help.warmupinbox.com/en/articles/4742677-how-does-the-system-handle-spam-emails · read 21 October 2026
02
What it says the move does
The article says that when an email lands in spam, we fix it, and that moving it into the inbox trains the algorithms that the email is important. The page is dated 1 May 2024 and gives no evidence for the effect on a reputation score.
help.warmupinbox.com/en/articles/4742677-how-does-the-system-handle-spam-emails · read 21 October 2026
03
Spam at the start is normal
A help article says warmup emails landing in spam in the first days is normal, and that the tool moves them to the main inbox to help build sender history. It also says warmup emails can be filtered and archived so your inbox is not flooded.
help.warmupinbox.com/en/articles/15478604-how-does-email-warmup-work-and-what-to-expect-after-you-connect-your-first-inbox · read 21 October 2026
04
Marketing wording
The FAQ says its network automatically opens, replies to and rescues your emails from spam folders, training algorithms to trust your domain. The how-it-works page says it replies to warmup emails, marks them as important and removes spam flags.
warmupinbox.com/how-it-works · read 21 October 2026
05
Blacklist rescue is a different claim
On its home page, a blacklist panel says rescue runs automatically when an inbox gets listed. Its example shows SpamCop as Rescued in 36h, and the page says most warmup tools tell you that you are listed while it gets you delisted.
warmupinbox.com · read 21 October 2026
06
Gmail keeps warmup apart
Its Gmail page says warmup messages are opened, replied to and archived automatically, and that a hidden label keeps warmup separate from your real conversations. It does not say how the label is hidden.
warmupinbox.com/integrations/google-gmail-warmup · read 21 October 2026
What Warmup Inbox does not say
We looked, and found no statement on these. That is about its published pages only, not about the product.
- A delay from the moment a message lands in spam to the moment it is moved out
- Whether every spam-placed warmup message is rescued, or a share of them
- Whether the 1 to 2 minute wait is before or after the reply is sent
- What the reply to a rescued message contains, or from which mailbox it is sent
- A figure for how many messages are rescued in a day, or the share that land in spam
- How the 36 hour blacklist example is measured, or what it covers beyond that one listing
Where the sources disagree
We report each version rather than pick one.
- The how-it-works page says the platform removes spam flags, while the help article describes marking, replying and moving without naming spam flags.
- The help article on spam handling is dated 1 May 2024, so some details may be out of date, while the how-it-works page and home page carry no dates.
- The home page uses rescue for both spam-folder recovery and blacklist delisting.
The numbers
Only what we could verify.
| Measure | Warmerly | Warmup Inbox |
|---|---|---|
| Spam rescue | Every spam-placed warmup mail is marked read, starred and moved to the inbox after 10 to 120 minutes. | Marked read and important, replied to and moved to the inbox, then filed after a 1 to 2 minute wait; no overall timing. |
| Delay before the message is moved | 10 to 120 minutes after sending | Not stated; 1 to 2 minute wait after the move |
| First email of a new mailbox | Read after 10 to 20 minutes | Not stated |
| Share rescued | Every spam-placed warmup mail | Not stated |
| Marking | Read, starred, important, then moved to the inbox | Read, important, reply, move to the inbox |
| Reply after a rescue | Always queued, unless depth 3 | Part of the stated sequence |
| How often the loop runs | Every 120 seconds | Not stated |
| Campaign mail touched | Never | Not stated |
| Blacklist rescue | Alerts on a listing, no automatic delisting | Stated: rescue runs automatically, 36 hours in its example |
In practice
What it means for you.
Our reading of the facts above. Not a promise, and not the only reasonable reading.
The method is the same, the detail is not
Both treat moving a message out of spam as a positive signal and add a reply. The difference is what you can check. Warmerly publishes a delay, a share and an exclusion for campaign mail. Warmup Inbox publishes the order of steps and the 1 to 2 minute wait.
Neither touches your real replies
Warmerly rescues warmup mail between pool mailboxes only. Warmup Inbox says a hidden label keeps warmup separate from your real conversations. In both cases the point is the same: rescue is about warmup traffic, not your prospects.
Blacklist delisting is a bigger claim
Warmup Inbox says it gets inboxes delisted. Delisting is normally a request to the list operator, and a listing can have causes warmup cannot change. We read the claim as a feature of its service we cannot verify, and we do not offer the equivalent.
Rescue is not placement
Rescuing warmup mail improves a mailbox's record with its partners. It does not tell you where your campaign mail lands. For that you need a placement test, which has its own page in this comparison.
Why we dropped sampling
We used to rescue about 75 per cent of spam-placed mail and now rescue all of it, on the reasoning in our own notes: a message left in Spam keeps teaching the filter. If a rival rescues a share, we would want to know the share.
Who it suits
Pick the one that fits.
Warmerly
Warmerly is the better fit if
- You want the delay and the share of rescue published and checkable
- You want an explicit statement that campaign mail is never touched
- You want every spam-placed warmup message rescued, with no sampling
- You want rescue and the quoted reply handled as one documented flow
- You do not need blacklist delisting from your warmup tool
Warmup Inbox
Warmup Inbox is the better fit if
- You want a tool that also promises to act on a blacklist listing
- You want a documented sequence including a wait before filing
- You value a hidden label that keeps warmup mail apart in Gmail
- You are happy to rely on a help article dated May 2024
- You want rescue described alongside its monitoring and alerts
Questions
How does Warmerly rescue spam?
It marks the message read, starred and important, moves it to the inbox and queues a reply. The loop runs every 120 seconds.
How long before a rescued message moves?
10 to 120 minutes after sending on Warmerly. Warmup Inbox states a 1 to 2 minute wait after the move but no overall time.
Does Warmerly touch campaign mail?
Never. It rescues warmup mail only.
Does either remove blocklist listings?
Warmerly alerts on a listing but does not delist. Warmup Inbox says rescue runs automatically, 36 hours in its example.
Sources
- Warmup Inbox help centre, how spam emails are handled
- Warmup Inbox help centre, how warmup works
- Warmup Inbox how it works
- Warmup Inbox home page
- Warmup Inbox Gmail and Workspace page
- Warmerly warmup
Warmup Inbox 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
- All features
- Starting price (per month)
- Cost at 5 and 25 mailboxes
- Free plan or trial
- What each tier adds
- Warm-up volume per mailbox
- Warmup network size
- Languages, templates and ESP targeting
- SPF, DKIM, DMARC and blocklists
- Placement test
- Supported mailboxes and sign-in
- Campaign sending
- API access
- Agency and client workspaces
- Data, support and terms
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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