One inbox
Replies from every mailbox arrive in one place, matched to the prospect and sequence.
COLD EMAIL SOFTWARE
Cold email software that keeps your domain safe
Send B2B outreach from your own mailboxes on separate domains. EterMail ramps each mailbox up slowly, writes a personal opener from each company’s own website, stops follow-ups the moment someone replies, and pauses before a problem grows.
- Your own mailboxes
- Warm-up and daily limits
- Unlimited on the Ultra plan
HOW IT WORKS
From list to replies
- 01
Set up mailboxes
Google Workspace, Microsoft 365 or any SMTP mailbox on a domain separate from your main one. A built-in guide works out how many you need.
- 02
Import prospects
CSV with emails, names and companies. Duplicates, invalid addresses, your opted-out customers and suppressed addresses are filtered out, and addresses are verified.
- 03
Write the sequence
A first email and follow-ups in the same thread. AI can write an opener for each prospect from their company’s website, with your own fallback line for the rest.
- 04
Approve and send
Sending spreads across your mailboxes inside business hours, with gaps between emails and weekends skipped if you like.
DELIVERABILITY
Built-in protection for your sender reputation
- Gradual warm-up
New mailboxes start low and add a set number of emails a day each week, up to a safe daily maximum. - Stops on reply
Follow-ups stop the moment a prospect replies, bounces or opts out. - Bounce limits
At a 2% bounce rate a mailbox holds its volume; at 3% it pauses and you are told why. - DNS and blacklist checks
SPF, DKIM, DMARC and MX are checked for every outreach domain, and domains are watched on major blacklists. - Separate from marketing
Outreach never uses your marketing domain, so a cold campaign can’t hurt your newsletters. - B2B and recorded
Each list records where it came from and why contacting those businesses is appropriate.
AI OPENERS
A personal first line that never makes things up
The AI tries three things in order, and you see which one each prospect got before step 1 goes out.
- Personal, from their website
The AI reads the prospect’s own company site and writes one or two sentences around one specific fact it found there. It never invents results, numbers or plans, and it doesn’t pitch. - Light, from title and company
If the site has nothing specific, it writes one light sentence from the prospect’s title and company only, and claims nothing about the company. - Your fallback opener
If neither works, the sequence’s fallback opener is used, with variables like the company name. Leave it empty to send without an opener. - Spot-check before sending
Each opener is labelled Personal, Light, Fallback or Edited. Edit or clear any of them before step 1 goes out.
Need a first draft of the email itself? Try the free AI email generator →
AFTER YOU SEND
Replies are where the work begins
Sorted for you
Real replies, auto-replies, unsubscribes and bounces are told apart automatically.
Drafted answers
AI drafts a response; you edit it and send from the original mailbox, in the same thread.
PRICING
Pay per email, or not at all
A cold email costs 5 credits, about $5 per 1,000, from the same credits as your marketing email. Mailboxes are paid to your provider directly, about $6–7 per mailbox a month with Google or Microsoft.
On the Ultra plan ($299 a month), cold email isn’t charged per send at all: volume is limited only by your mailboxes and their safe daily limits.
Frequently asked questions
Is cold email legal?
B2B cold email is legal in many countries when it is relevant, honest about who you are, and easy to opt out of. Rules differ by country; EterMail records each list’s source and the reason for contacting it, and every email carries an opt-out.
Why does outreach need approval before I can send?
To protect everyone’s deliverability, cold outreach is turned on for a workspace after a short review of what you plan to send. You can set up mailboxes, lists and sequences in the meantime.
How many emails can one mailbox send?
By default up to 30 a day once warmed up, and you can change the limit per mailbox. For 100 a day, plan on four mailboxes across two domains; the built-in guide does the maths.
Do you sell mailboxes?
Not yet. You buy them from Google Workspace, Microsoft 365 or a specialist provider, and connect them in a few minutes.
Will AI openers make things up about a prospect?
They are written to avoid it: a personal opener rests on one specific fact from the prospect’s own website, and a light one uses only their title and company. When neither is possible, your fallback opener is used. You can read and edit every opener before step 1 goes out.
More from EterMail
Every email, unmistakably your brand
Sign in with Google or a one-time email code, and connect your data in minutes.