How do I set the language of my warmup emails?

Short answer: open Warmup, click the settings (gear) icon on the mailbox you want to change, and pick your language under Email Language. You can choose English, Spanish, French, German, Portuguese, Italian, or Dutch. Your warmup emails are then written natively in that language — composed directly in it, not written in English and run through a translator — so they read like a real person wrote them. The Example Warmup Emails card right there previews real sample subjects and bodies in the language you pick, so you can see exactly what will go out before you save. The setting takes effect on newly generated warmup mail from that mailbox.

WarmySender is a 4-pillar outreach platform — Cold Emailing, Email Warmup, LinkedIn Outreach, and Multichannel sequences. Warmup is the foundation the other three build on: it keeps your sending mailbox trusted so your real campaigns land in the inbox. Matching the warmup language to the language you actually send campaigns in makes that foundation stronger.

Where to set it

Warmup language is a per-mailbox setting, so you can give every mailbox its own language — handy if you run outreach in more than one market.

1. Open Warmup from the left sidebar.
2. Find the mailbox you want to change and click its settings (gear) icon.
3. Scroll to Email Language and choose from the list.
4. Watch the Example Warmup Emails card update to your chosen language — those are real sample messages, so you can see the tone and wording before committing.
5. Save. From the next warmup cycle onward, new warmup mail from that mailbox is written in the language you picked.

The languages you can choose

Each of these is written natively — the words are composed directly in the language, the way a fluent speaker would phrase a short, everyday email, not translated from English after the fact.

If your market isn't listed yet and you'd like it added, email [email protected] — that feedback helps us decide which languages to add next.

Why native, not machine-translated

Warmup works by having your mailbox hold natural-looking conversations with a trusted peer network, so the inbox providers learn that your mailbox behaves like a normal, well-used account. Two things make that work: the conversations have to look like a real person wrote them, and they should resemble how your mailbox is actually used.

Native wording matters for the first point. Machine-translated text often comes out slightly stiff or oddly phrased — exactly the kind of "off" signal that makes a message look automated. Warmup composed directly in the target language avoids that; it reads the way a fluent colleague would actually write.

Representativeness matters for the second point. If your real campaigns go out in Spanish but your warmup mail is in English, the warmup traffic doesn't match how the mailbox is genuinely used. Setting the warmup language to the language you actually send in makes your warmup activity a truer reflection of your real sending — which is exactly what you want the inbox providers to learn.

Preview before you commit

You never have to guess what will go out. The Example Warmup Emails card sits right next to the language selector and updates live as you change the setting. It shows real sample subjects and bodies in the selected language, so you can read the tone, check the wording feels natural for your market, and only then save. If you switch languages a few times to compare, the preview follows along instantly.

When the change takes effect

The language applies to newly generated warmup mail — the messages your mailbox composes from the next warmup cycle onward. Warmup emails that were already created and are on their way keep the language they were written in; there's nothing to undo or clean up. In practice you'll see the new language flowing through within a day, on your mailbox's normal warmup schedule.

Changing the language doesn't reset your warmup progress, change your daily volume, or restart your ramp. It only affects the words in the messages, so you can adjust it whenever you like without any cost to the reputation you've built. For how volume and ramp work, see how warmup ramps up and how to control your warmup sending volume.

Frequently asked questions

Which languages can warmup emails be written in?

You can set warmup to English, Spanish, French, German, Portuguese, Italian, or Dutch. Each one is written natively — composed directly in that language rather than translated from English — so the messages read like a real person wrote them. It's a per-mailbox setting, so different mailboxes can use different languages. If you need a language that isn't on the list yet, email [email protected] so we can prioritize it.

Where do I change the warmup language?

Open Warmup from the sidebar, click the settings (gear) icon on the mailbox you want to change, and choose your language under Email Language. The Example Warmup Emails card next to it previews real sample messages in the language you pick, so you can see what will go out before you save. The change applies to newly generated warmup mail from that mailbox.

Are the emails machine-translated?

No. Warmup emails are written natively in the language you choose — composed directly in it, the way a fluent speaker would phrase a short everyday email. They are not written in English and then run through a translator. Native wording avoids the slightly stilted phrasing that machine translation can produce, which matters because natural-sounding messages are part of what keeps your warmup activity looking like a real person rather than an automated tool.

Should my warmup language match the language I send campaigns in?

Usually, yes. Warmup builds your sending reputation by making your mailbox's activity look natural and representative of how it's actually used. If your real outreach goes out in French, warming up in French makes the warmup traffic resemble your genuine sending, which is what you want the inbox providers to learn. If you send in more than one language from different mailboxes, set each mailbox to the language it sends in.

When does the new language take effect, and does it reset my warmup?

It applies to newly generated warmup mail, so you'll typically see the new language within a day on your mailbox's normal warmup schedule. Messages already created keep the language they were written in. Changing the language does not reset your warmup, change your daily volume, or restart your ramp — it only changes the words in the messages, so you can adjust it anytime without losing the reputation you've built.

Can each mailbox have a different language?

Yes. Email Language is set per mailbox, so you can run one mailbox warming up in English, another in German, and another in Portuguese — each independently. This is ideal if you run outreach across several markets. Open the settings for each mailbox and pick its language separately; the Example Warmup Emails preview always reflects the mailbox you're editing.

Related reading

• How to control your warmup sending volume — set the daily volume and ramp speed for each mailbox
• How warmup ramps up — why volume starts small and grows over the first weeks
• Email Warmup FAQ — how peer-to-peer warmup protects your deliverability
• Full documentation — Cold Emailing, Email Warmup, LinkedIn Outreach, and Multichannel guides