By Nicolas Avila · October 9, 2026

New domain: warm it up before sending

Photo: Avila Ops Tecnologia

A domain registered a few weeks ago has no reputation, and for Gmail and Outlook “none” is almost “bad.” If its first act is blasting 800 promotional emails, most land in spam and it starts life flagged. Warming up is the opposite: start with small volumes to people who reply, increasing gradually over three or four weeks.

This matters to anyone who recently opened a business, registered a domain, and wants to tell their list about a date such as Carnival or launch a first campaign. Rushing costs more than waiting. See What sender reputation is for how it is measured.

Why do providers distrust new domains?

Because that is how scams work. Spammers register cheap domains, send bulk messages for two days, then abandon them. Providers recognize the pattern: a new domain, no history, sudden high volume, recipients who do not interact. They cannot tell a scammer from a new bakery. Both receive the same suspicion.

Real business behavior removes suspicion: verified identity (SPF, DKIM, DMARC), regular increasing volume, people opening and replying. That takes time because providers need a sample. Learn about domains and registration at avilaops.com/glossario/dominio.

How do I warm up a new domain in four weeks?

First configure SPF, DKIM, and DMARC. Do not start without them.

These are small-business reference figures; adjust to list size while keeping the proportions. Increase in steps: each week roughly two to three times the previous volume, never straight to the final amount. If replies drop or bounces appear, hold volume for another week. Every group send, in every week, goes only to people who agreed to receive your emails, with a visible unsubscribe link.

What about the old list during warmup?

Do not send to it yet. A two-year-old list has nonexistent addresses, and every bounce costs reputation when you have none. Separate contacts who bought or replied within six months; only they enter weeks 3 and 4. The rest enter later in groups of 50, after a month of clean domain activity.

If Carnival news is urgent, use WhatsApp status, messages to people who accepted notices, and Google Business Profile. Email follows without rushing the domain.

What to do now

If the domain is new, start week 1 today and resist the blast. If it does not exist yet, register in your name, with automatic renewal and email records configured from the start: avilaops.com/dominio-e-hospedagem or WhatsApp: wa.me/5517997811471.

Frequently asked questions

Do I need warmup for individual emails only?

No. Warmup concerns volume sending. Normal conversations and quotes are natural warmup: low volume and people replying. Avoid jumping from that to 500 messages at once.

Does an old domain that never sent email need warmup?

Yes, but less. Providers have seen it exist for years, reducing scam suspicion, but it has no sending history. Two weeks with the same plan usually suffice.

Can a paid tool warm it up faster?

Sending tools offer automatic gradual delivery, helping discipline. None buys reputation. Time remains the same because the recipient’s provider decides, not the tool.