Can I launch a campaign before my mailbox has finished warming up?
Yes, you can build your sequence and launch on the day you sign up. You do not have to come back later. Warmerly keeps the early sending gentle for you, and if you are using the free mailbox that comes with your account, the campaign waits for it and starts by itself.
What you get depends on which mailbox the campaign uses.
If you use your free mailbox
Every account has one free mailbox that starts warming up at signup. It can send campaign email after 7 days of warmup, provided you have verified your email address, at up to 10 cold emails a day. See How do I get a free sending mailbox?.
You can launch before it unlocks:
- Build the campaign and click Launch now (or Start on the campaign page).
- If the free mailbox is the campaign's only sender and it is still warming up, the launch check shows a warning, not a blocker. It gives the date the mailbox unlocks and says the campaign starts sending then, by itself.
- Accept the warning once (Start anyway? then Start sending).
- The campaign is live straight away. When the mailbox unlocks, sending begins with no action from you, and you get an email that says your campaign has started sending, with a link to it.
While it waits, the campaign's Overview keeps showing the start date in Launch readiness.
Other reasons the free mailbox cannot send are still blockers, because none of them clears by itself: your email address is not verified, the mailbox is paused or unhealthy, or the shared domain it lives on is blocked or full. The check names the reason.
If you use your own connected mailbox
A mailbox you have connected can be used in a campaign straight away. To keep a young mailbox safe, the campaign's volume ramp is switched on automatically when you create it if your project has no mailbox yet, or any mailbox has fewer than 14 days of warmup:
- Day one: 3 emails per mailbox.
- Then 1 more per sending day, up to 15 per mailbox per day (about the 13th sending day).
- Sending days only count, so weekends you do not send on do not advance it.
You can change or switch off the ramp under the campaign's Settings > Advanced. For a project where every mailbox is already established, the ramp starts off, so it does not hold a warm mailbox back. Details are in Why does my campaign send fewer emails than my daily limit?.
Keep warmup switched on while you send. It keeps running alongside your campaigns and is what builds the reputation that lets volume grow. See How warmup works.
What day one looks like
- The campaign is live from the moment you start it.
- Nothing is sent outside your sending days and hours.
- A new mailbox sends only a few emails a day at first, so the campaign will look slow. That is the ramp working, not a fault.
- A campaign that needs its free mailbox to unlock shows no sends until then.
What this does not do
- It does not make a brand-new domain safe to blast. The ramp limits day-one volume; it does not replace warmup or correct DNS. Check your mailbox's DKIM, SPF and DMARC. See the guides.
- It does not raise the free mailbox's small daily allowance.
- It does not skip your plan's limits. See Plans and limits.
Common problems
The launch check says the free mailbox is warming up. That is the warning described above. Accept it and start.
The launch check says something other than warming up. Read the reason. Verify your email address or fix the mailbox on Accounts, then try again.
Launched, but nothing has sent. Check the date in Launch readiness, your sending days and hours, and the troubleshooting checklist.

