EmailPal

Warming

What is email warmup and how it works

Email warmup explained: why new mailboxes get filtered, what a ramp is, how providers actually learn, and how EmailPal decides a mailbox is ready using measured inbox placement rather than a 14-day timer.

What is email warmup?

Email warmup (or warm-up, or warming) is the practice of sending a small, increasing amount of mail from a new mailbox — and getting replies — so Gmail, Microsoft, Yahoo and other providers learn that the address is a real correspondent, not a spam source.

Without it, a brand-new domain that immediately sends hundreds of cold emails often lands in spam or gets blocked. The domain is not "broken." It is unknown. Unknown senders get filtered.

Warmup is not a magic inbox guarantee. It is how you stop looking like a brand-new blast.

Why providers care

Inbox providers score history: volume, bounce rate, complaint rate, whether humans reply, whether similar copy already exists as spam. A mailbox with zero history has none of those signals. Jumping to campaign volume is the fastest way to collect the wrong ones (bounces, spam-folder placements, blocks).

Gmail and Yahoo's 2024 bulk-sender rules made authentication mandatory. They did not make warmup optional. Authentication says the mail is from you. Warmup is how they decide whether mail from you belongs in the inbox. See Google and Yahoo sender requirements.

How a ramp works

A typical ramp:

  1. Starts at a handful of messages per day
  2. Increases gradually (EmailPal uses a concave curve on the standard profile so the steepest relative increases never land in week one)
  3. Includes replies, not only one-way sends
  4. Avoids looking like a weekday-only blast (weekends are quieter)
  5. Stops or slows if placement collapses, instead of "pushing through"

EmailPal runs that ramp against real accounts at Gmail, Yahoo and AOL, then asks those accounts where the message landed. That last step is the difference between "we sent warmup mail" and "we know it inboxed."

How EmailPal is different from a calendar

Many tools call a mailbox ready after N days — often 14 or 21. Days are easy to sell and easy to game: leave warmup on, ignore whether the mail is in spam, start campaigns on the date.

EmailPal calls a mailbox campaign-ready when measured inbox placement says the mail is reaching the inbox. A mailbox can take longer than 14 days; an aged domain often takes less (around 7).

  • Standard profile — for a domain with no history. Starts at two messages a day. Typical 14+ days.
  • Accelerated profile — for aged domains or mailboxes already sending. Starts at five a day. Typical ~7 days.

Those numbers are what we usually see, not a contract. Details: Campaign-ready vs a number of days and the product write-up Email warming by EmailPal ($0.60/mo).

Pre-warmed vs warming a mailbox you own

  • Warming ($0.60/mo): you bring or create the mailbox; we run the ramp.
  • Pre-warmed ($3/mo lease): we already ran the ramp on inventory. You claim it and send 15 cold emails a day immediately. What "pre-warmed" means.

If a page says "skip warmup" and "ready on day one," it is selling pre-warmed inventory, not a faster warmup slider.

What warmup cannot fix

FAQs

Do I still need warming if my domain is old?

Age helps DNS look settled. It does not replace conversations. An aged, unwarmed domain on EmailPal still takes the accelerated (~7 day) ramp.

Can I skip warming and send anyway?

You can send from any mailbox that is provisioned. The filters on the other end do not care that you were in a hurry.

What is spam rescue?

If a seed reports spam, EmailPal tries to pull the thread back toward the inbox instead of continuing to pour volume into spam. That is part of the $0.60 product, not an add-on.

Do warmup emails count as campaign volume?

No. Do warmup emails count toward sending limits?

Is "email warmup" the same as "pre-warmed mailboxes"?

No. See Pre-warmed vs email warmup.

Need More Help?

When is a mailbox ready to send? or the warming product page.