OneMail: mailboxes and domains hosted by Warmerly
OneMail is the way to get sending mailboxes without touching Google Workspace or Microsoft 365. Warmerly hosts the mailbox on its own mail servers, sets up the domain's DNS, starts warmup and connects it to your campaigns and inbox. It is not Google Workspace or Microsoft 365: the mailboxes are ordinary IMAP and SMTP mailboxes on Warmerly's own infrastructure.
Everything below is done while signed in, under Accounts > Add > OneMail mailbox (we host it). There is no separate OneMail page.
Four ways in
- Buy a new domain. Search a name in the wizard. It shows whether the name is available and the yearly registration price live from the registrar before anything is charged. You never have to touch DNS.
- Connect a domain I own (Namecheap, GoDaddy, Cloudflare or anywhere else). By default you change the domain's nameservers at your registrar to the two the wizard shows, which takes about two minutes plus propagation, and Warmerly then manages the records. If you would rather keep your current DNS provider, choose "Add records manually instead" and add the records yourself (see below). There is no domain fee. You do not need to buy a domain from Warmerly.
- Add mailboxes to a domain you already have. Shown once you have a OneMail domain. No DNS to touch. Warmup starts the same day.
- Get a ready-warmed mailbox. Sometimes there are mailboxes that have already finished warmup. The option appears in the wizard only when some are in stock, and they can send campaigns the same day.
You can use several domains, and several mailboxes on each. Two domains with two mailboxes each is fine.
How much is a domain if I buy it through Warmerly, and where do I buy one?
You buy it inside the app, after you sign in: Accounts > Add > OneMail mailbox (we host it) > Buy a new domain. Type a name and the wizard shows whether it is available and its price straight from the registrar, both the first-year registration price and the yearly renewal. The price depends on the ending (.com, .co and so on), so there is no single figure to quote here. You see it before anything is charged. The Buy a domain option is only visible once you have an account, so a visitor browsing the website will not see it yet. Warmi can also look up the live price of a specific name for you.
What Warmerly sets up for you
For a domain you buy, or a domain you connect by nameservers, Warmerly publishes the MX, SPF, DKIM and DMARC records itself. On a connected domain that is done as soon as the nameserver change reaches the internet. The domain's page under Accounts shows each step and a Check now button while it waits.
If you add the records yourself
On the manual route Warmerly does not publish anything. The wizard lists the records to add at your DNS provider: MX, SPF, DKIM and DMARC records for the domain, plus a bounce MX and SPF record, and, when offered, an optional tracking CNAME. Add every required one, because skipping one hurts deliverability. Warmerly checks for them about every minute and carries on by itself once they resolve. Only your DNS provider decides how long that takes. If the domain already receives email, both DNS routes stop before changing any MX record and recommend a secondary sending domain instead, so your existing inboxes keep working.
Warmup and sending volume
Warmup starts automatically and stays on. A new mailbox starts campaigns on a volume ramp, from a few emails a day, climbing as it warms. It is fully warm after about two weeks, longer on a brand new domain. A new mailbox's daily limit defaults to 30 campaign emails a day, and the ramp keeps the first days below that. Do not raise it early. See How warmup works.
Sending and receiving
A OneMail mailbox sends and receives normal mail. Replies to your campaigns arrive in the Warmerly Inbox, alongside every other mailbox, and stop that prospect's remaining follow-ups.
Cold email
Outreach to businesses is what Warmerly is for, and OneMail mailboxes can be used for it. You must follow the Acceptable Use Policy: lawful outreach to business contacts, with no bought or rented lists and no consumers without the consent their country's law requires. Accounts that break it can be suspended.
What it costs
OneMail is billed per mailbox, monthly, on your existing subscription. The per-mailbox rate is lower on higher plans, and there is no minimum. A OneMail mailbox never uses up the mailbox limit of your plan. A Free workspace can also buy them by adding a card. Domain registration is a separate, one-off yearly fee shown in the wizard before you pay, and it is not charged when you connect a domain you already own. Current prices are on the pricing page.
If a mailbox has deliverability problems
Warmerly watches every mailbox and pauses sending when reputation drops, and the mailbox's page shows the DNS and blocklist checks with the fix. Replacing a mailbox is not an automatic promise: tell support at support@warmerly.com with the mailbox address and it will be looked at.