Email warmup that ramps real mailboxes

Emailchaser warms up every mailbox you connect or buy, automatically: genuine sending volume increased from a couple of emails a day up to that mailbox's cap. No pool of strangers' inboxes faking opens and replies, and no separate warmup subscription.

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Warmup is sold as a feature you bolt on, usually priced per inbox per month. In practice most of what it does is either something your sending platform should already handle, or something you should not want done to your mailbox at all. Emailchaser takes the first half and includes it: every mailbox you connect or buy is enrolled automatically in a gradual ramp-up (you can opt out), so a new inbox never goes from zero to hundreds of emails overnight.

Mailboxes you buy through us go a step further. Done-for-you mailboxes are $6 per mailbox per month with provider-side warm-up included, plus a one-time setup fee per mailbox and the domain registrations, and Autopilot shows you the exact monthly and first-month cost on the approval screen before anything is bought. Everything else that decides where your email lands sits on the same flat plan: inbox rotation, SPF, DKIM and DMARC support, and double email verification before a single address enters a campaign.

"Warmup" means two different things

A gradual ramp on a real mailbox

You send genuine email to genuine recipients, starting small and increasing volume over days and weeks. This is uncontroversial, it matches what Gmail asks bulk senders to do, and Emailchaser does it for you automatically on every mailbox.

A pool of accounts faking engagement

Your mailbox joins a network of other accounts that email each other, open each other's messages, reply and mark them important, to manufacture a reply rate. This is the kind sold as a standalone "warmup tool", and it is the kind we will not build.

Google's email sender guidelines, read on 3 August 2026, tell senders to "start with a low sending volume to engaged users, and slowly increase the volume over time" and to "avoid introducing sudden volume spikes" (Gmail sender guidelines). That is the first kind, and it is the one we automate. Our full argument against the second kind, with the sources, is in does email warm-up work?

What you get on every plan

Automatic ramp-up on every mailbox

Every mailbox you connect or buy is enrolled automatically in a gradual ramp-up, and you can opt out. Real sending volume climbs from a couple of emails a day up to that mailbox's cap, instead of a new inbox blasting hundreds of emails on day one.

Provider-side warm-up on mailboxes we supply

Done-for-you mailboxes bought through Emailchaser cost $6 per mailbox per month and include provider-side warm-up, plus a one-time setup fee per mailbox and the domain registrations. SPF, DKIM and DMARC are configured for you.

No fake-engagement warm-up pool

We refuse to build the pool model, where strangers' inboxes email each other and fake opens and replies to manufacture a reply rate. Mailbox providers detect that pattern, and Gmail's own guidelines tell senders to grow volume gradually rather than manipulate engagement.

Inbox rotation across every sending account

Sending is spread across all of your connected inboxes, so no single mailbox carries the whole campaign. Starter covers up to 30 sending accounts and Professional is unlimited, both on one flat price.

Authentication checked before you send

A ramp cannot rescue an unauthenticated domain. Run the free deliverability test to see your SPF, DKIM, DMARC and MX records, and fix anything missing with the free record generators.

Double verification on every address

Two independent providers (BounceBan and Enrichley) check each address, and we only email it when both mark it valid. Bounces damage a warming mailbox faster than almost anything else, so this runs before the send, not after.

How to warm up an email account

Authenticate the domain first
Publish SPF, DKIM and DMARC before the mailbox sends anything. Gmail requires all three from anyone sending more than 5,000 messages a day, and the From: domain has to align with the SPF or DKIM domain.
Start small and increase slowly
Begin at a handful of emails a day from each new mailbox. Gmail's guidance is to start with a low volume and increase it over time, avoiding sudden spikes if you have no history of sending large volumes.
Send to verified addresses only
A new mailbox has no reputation to spend on bounces. Verify every address before it enters a campaign, and drop anything either verifier flags.
Spread the load across mailboxes
Rotate sending across several inboxes rather than pushing one to its ceiling. More mailboxes at a low daily volume beats one mailbox at a high one.
Watch complaints, not vanity metrics
Gmail asks senders to keep the spam rate in Postmaster Tools below 0.10% and never to reach 0.30%. That number tells you far more about a mailbox's health than any reply rate a warmup pool reports back to you.

Steps one and two are free to do yourself: the deliverability test shows what your domain is publishing today, and the SPF, DKIM and DMARC generators build the records you are missing. If you would rather not think about daily volume at all, Emailchaser handles the ramp and the rotation for you.

What to ask before you buy a warmup tool

Ask what the tool actually sends. If the answer is emails between customers' inboxes, you are buying manufactured engagement, not deliverability.
Ask whether warmup volume counts against your daily sending cap. If it does not, the tool is quietly adding volume your mailbox has to carry.
Ask whether the tool adds open-tracking pixels to warmup mail. Tracking pixels can hurt deliverability on their own.
Ask what it costs per mailbox per month, and multiply by the number of inboxes you actually plan to run. Per-inbox pricing is where warmup add-ons get expensive.
Ask what happens on day 30. A ramp has an end. A subscription that never ends is a subscription, not a ramp.

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In development, not live yet

The honest version of the thing warmup pools pretend to do is measurement: sending to real seed inboxes across the major providers and reporting whether your mail landed in the inbox, spam or a promotions tab. We are building that as the Emailchaser Warm-Up Pool, and it is not shipped, so do not buy Emailchaser for it today. What you get today is the automatic ramp-up described above. We explain the difference between measuring placement and faking engagement in our guide to email warm-up.

Email warmup FAQ

What is email warmup?

Email warmup is the practice of gradually increasing how much email a new mailbox sends, so mailbox providers see a sending pattern that builds up rather than a brand new account suddenly sending hundreds of messages. The term is also used for a second, very different thing: adding your mailbox to a pool of accounts that email each other and fake opens and replies. The first is a normal ramp. The second is manufactured engagement.

Does Emailchaser include email warmup?

Yes, the ramp kind. Every mailbox you connect or buy is automatically enrolled in a gradual ramp-up, which you can opt out of: genuine sending volume increased from a couple of emails a day up to its cap. Mailboxes purchased through Emailchaser also include provider-side warm-up. What we do not build is a fake-engagement warmup network that simulates opens and replies between strangers' inboxes.

How much does Emailchaser's email warmup cost?

Nothing on top of your plan. Ramp-up is included on Starter ($1 for your first month, then $47 per month, up to 30 sending accounts) and on Professional ($297 per month, unlimited sending accounts). The only warmup-related line item is the done-for-you mailboxes themselves, at $6 per mailbox per month with provider-side warm-up included.

How long should you warm up an email account?

There is no fixed number that is true for every mailbox, and any tool quoting you one is guessing. The honest version is that you ramp until the mailbox is sending its target daily volume without complaints, then keep it there. Emailchaser ramps each mailbox from a couple of emails a day up to its cap automatically, so you are not counting days by hand.

Are email warmup tools safe?

The ramp kind is safe because it is just sending real email sensibly. The fake-engagement kind carries real risk: mailbox providers can detect networks of new accounts that only ever email each other, and warmup mail still counts towards the total volume your mailbox is carrying. Our full argument, with the sources, is in our guide on whether email warm-up works.

Do I need a separate email warmup service?

Not if your sending platform ramps mailboxes for you. A standalone warmup subscription is worth paying for only when your sending tool cannot ramp, and even then you should check what it is actually sending on your behalf before you connect a mailbox to it.

Does warmup fix emails going to spam?

On its own, no. Placement is decided by authentication, list quality, sending volume and what your emails say, and a ramp only helps with the volume part. Fix SPF, DKIM and DMARC first, verify your list, keep per-mailbox volume sensible, then let the ramp do its job.

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