We warm every mailbox for 14 days before it sends cold email.
A new mailbox that starts sending cold email on day one goes straight to spam. Pipefire warms every mailbox automatically, checks the results every day and only lets it send once it is ready. You cannot burn a new domain by starting too early.
| Mailbox | Warm-up | Reached the inbox | Cold email |
|---|---|---|---|
| sam@getbrightsideroofing.com | day 14/14 | 98% | Sending, ramping up |
| sam@brightsideroofinghq.com | day 14/14 | 97% | Sending, ramping up |
| alex@trybrightsideroofing.com | day 9/14 | 95% | Waiting |
| alex@brightsideroofingteam.com | day 9/14 | 91% | Waiting |
| sam@gobrightsideroofing.com | day 3/14 | 88% | Waiting |
- 1We count each mailbox through its warm-up days.
- 2We check daily how much warm-up mail reached the inbox.
- 3We switch on cold email only when warm-up is done.
What you get
We run it, you never touch it
Warm-up starts the moment a mailbox is ready. There is no schedule to configure and no button to forget.
We measure it every day
Where every warm-up email landed is recorded daily, so you can watch each mailbox get healthier.
We hold back unready mailboxes
A mailbox only sends cold email after its warm-up days and when its results are good. A slow one waits rather than hurting your campaign.
How it works
We start warm-up for you
Warm-up begins as soon as a mailbox passes its setup checks.
We raise volume slowly
Volume climbs slowly, the way a real person starts using a new mailbox.
We check results daily
Inbox and spam placement is pulled daily and shown against each mailbox.
We ramp up cold email slowly
After warm-up, cold sending starts small and builds to 30 a day per mailbox over the next two weeks.
What runs on its own, and what you decide
Pipefire does this for you
- Starting warm-up on every new mailbox
- Raising volume day by day
- Checking where warm-up mail landed
- Switching on cold email when a mailbox is ready
You stay in charge of
- Nothing to set up
- You can see every mailbox and its results at any time
When something goes wrong
A mailbox lands in spam during warm-up
It stays in warm-up longer. It does not start cold email until its results recover.
A mailbox slips after it starts sending
Cold email is paused for that mailbox and it goes back to warm-up while the others carry on.
A domain looks damaged
It is taken out of sending. On Pro and Scale a replacement is set up and warmed automatically.
Twenty mailboxes, day 1 to day 28
- Day 1Every mailbox sends a handful of warm-up emails to other real mailboxes.
- Day 7One mailbox shows more spam than the rest. It is held back while the others move on.
- Day 15Warm-up done. Cold email starts at 5 a day per mailbox, alongside warm-up.
- Day 28Each ready mailbox reaches 30 cold emails a day. The held one joins a few days later.
Doing it yourself vs Pipefire
| Doing it yourself | Pipefire⚡ Done for you |
|---|---|
| Set up a warm-up tool for every mailbox | Warm-up starts on its own |
| Check a dashboard every few days | Results checked daily for you |
| Guess when it is safe to start sending | Cold sending switches on only when a mailbox is ready |
| Pay for warm-up as another subscription | Included in the price |
Questions
Why does cold email need warm-up?
Gmail and Outlook treat a brand new mailbox that suddenly sends lots of email as a spammer. Warm-up builds a normal history first, so your cold email reaches the inbox.
Can I skip the 14 days?
No. Sending early is the most common way to burn a new domain, so Pipefire does not allow it.
Does warm-up stop once I start sending?
No. Warm-up keeps running alongside your cold email, which keeps each mailbox looking like a normal, active one.
How it fits with the rest of Pipefire
Everything else Pipefire does for you
We buy 10 sending domains, set up 20 mailboxes and write every DNS record. Your real domain never sends cold email.
See how it worksPick a trade and an area. We find the businesses, the decision-maker and a verified email address, fresh, never from a bought list.
See how it worksYou answer a few questions. We write cold emails for your prospects, ready for you to approve.
See how it worksWe verify every address before sending, and pause on our own if bounces pass 3% or complaints pass 0.1%.
See how it worksWe sort every reply, put interested prospects and questions at the top, and draft an answer for you to send.
See how it worksWe watch every mailbox and domain around the clock, and deal with problems before you notice them.
See how it worksYour real domain never touches cold email.
Separate domains, warmed and watched for you, so the domain your clients email stays clean.