When is a mailbox ready to send?

The short answer

• Hosted or connected mailbox with warming on: ready when the dashboard says campaign-ready. That is a measured inbox-placement rate, not "day 14 passed".
• Pre-warmed lease: ready as soon as the claim job finishes. Cap is 15 cold emails per day.
• Fresh mailbox with warming off: not ready. Do not send campaign volume.

Instantly's help center frames this as a health score and a two-week wait. Smartlead often frames pre-warmed as "skip warmup." EmailPal frames readiness as placement evidence. The underlying idea is the same: unknown senders get filtered, and a calendar is a weak substitute for knowing whether the mail inboxed.

What "campaign-ready" means here

Campaign-ready vs a number of days is the article for the metric. In one sentence: seed accounts at Gmail, Yahoo and AOL report where warming mail landed, and we only call the mailbox campaign-ready when that rate is good enough to send.

Typical waits — observations, not a contract:

• New domain we just registered: on the order of 14 days of warming (standard profile, starts ~2/day)
• Aged, unwarmed domain: closer to 7 days (accelerated profile, starts ~5/day)
• Pre-warmed inventory: the wait already happened on our side. Listed addresses already finished the ramp.

A mailbox can take longer than 14 days. If it is in Slow-Ramp or blocked, adding cold volume is how you train spam. Troubleshooting failed warmup.

Price of the ramp you run yourself: $0.60/inbox/mo. Pre-warmed includes it. Email warming by EmailPal.

Checklist before you launch

1. SPF, DKIM and DMARC are green in the dashboard. See How to set up DNS records.
2. Warming is on and not paused. Pausing resets progress. See Enable, pause or resume warming.
3. Status is campaign-ready (or you claimed a pre-warmed inbox).
4. You verified the list. A bounce storm the first week undoes the ramp. See How to verify an email list before sending.
5. You will stay under the cap: 40/day on plan mailboxes, 15/day on pre-warmed. See Sending limits per mailbox.
6. Copy is plain on the first mail. No attachments, no three tracking links. Open tracking off.

The wider version of this list: Cold email deliverability guide.

Pre-warmed: ready means ready, with a ceiling

They are listed only after the ramp finished. Treat them as ready the minute the claim job rotates passwords — usually minutes, not hours.

Ready does not mean 50/day. The 15/day cap is how the measurement survives contact with a campaign. What "pre-warmed" means.

FAQs

Can I send a few emails before campaign-ready?

A handful of highly engaged messages is less risky than a blast, but EmailPal's product advice is to wait. The warming network is already sending. Adding cold volume on top of a mailbox that is still landing in spam trains the wrong signal.

Why is my health still low after a week?

Early warming often lands in spam while providers learn the domain. That is expected. Watch the trend, not a single day. If warming is failed or disabled, fix that first. A warmup bounce is a different problem — credentials or authentication, not patience.

Do pre-warmed inboxes show campaign-ready?

They are listed only after the ramp finished. Treat them as ready, with the 15/day cap. The listing's inbox rate is the measurement that already happened.

Does "day 14" on another tool match EmailPal?

Other tools often graduate on elapsed days. EmailPal graduates on placement. If a competitor says ready and our dashboard does not, believe the dashboard you are sending from.

Do warmup emails count toward the 40/day cap?

No. Do warmup emails count toward sending limits?.

Need more help?

Email warming by EmailPal, What is email warmup and how it works, or open a ticket.