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Cold email software

Cold email software with every mailbox, teammate and warm-up included.

FirstSales is cold email software for teams that want replies, not another bill for each mailbox. Unlimited mailboxes, warm-up, team members and workspaces come with every plan, along with lead search, contact checks, AI writing or your own templates, and one inbox for every reply.

Start your $1 trial See pricing

$1 for 3 days · Cancel anytime · No contract

FirstSales dashboard with active campaigns, email connectors, contacts, emails sent and performance trends
  • 01

    Unlimited mailboxes, members and workspaces

  • 02

    21-day warm-up and hourly monitoring

  • 03

    AI writing or your own templates

  • 04

    From $29/mo, $1 for 3 days

Why buying is hard

Most cold email software looks the same until you add a second mailbox.

Feature lists look alike, so the differences show up later: in the bill, in the spam folder, or in how much work each campaign still takes. These are the three places to look before you choose.

The price grows with you

Many tools price per mailbox or per seat. That looks cheap for one person and gets expensive just as outreach starts to work and you need more mailboxes.

Deliverability is someone else's job

If warm-up, list checks and domain records live in other tools, it is easy for one of them to slip. When it does, your emails stop reaching the inbox and nobody notices for days.

The tool only sends

Sending is the easy part. Finding the right people, writing to each one, following up and keeping track of replies is the work. A tool that only sends leaves all of that to you.

What good looks like

Good cold email software covers the whole path to a reply.

Use these three tests on any tool you are looking at, including this one.

  1. 01

    It gets you into the inbox

    Warm-up, domain record checks, contact checks and monitoring are built in and on by default, not extras you have to remember.

  2. 02

    It does the writing work

    It finds people worth writing to, writes to each one from real details, follows up and stops when they answer, with a way for you to review first.

  3. 03

    It grows without a new bill

    More mailboxes, more teammates and more workspaces should not change your price. Otherwise each step forward costs you more.

Why teams pick FirstSales

One tool for outreach, with the growth costs taken out.

What you get when sending, leads, writing and replies live in one place, on one flat plan.

  • Unlimited mailboxes

    Connect as many Google, Microsoft or SMTP/IMAP mailboxes as you need. Sends rotate across them.

  • Warm-up on every mailbox

    Each mailbox warms up over 21 days in three phases, with hourly monitoring and a health grade.

  • Leads included

    Find people with AI search and Google Maps, or import your own list. Every contact is checked before each send.

  • Writing your way

    Send your own template, have AI draft for your approval, or let AI Autopilot write and send.

  • Replies and CRM together

    Unibox brings every reply from every mailbox into one list, next to a built-in CRM.

  • Unlimited team members

    Add teammates and workspaces for clients or brands, with billing kept to one organization.

Five things to check inany cold email software

Ask about each one in a demo or a trial. Here is how FirstSales answers.

  1. Check 1 · Pricing

    Does the price change when you add mailboxes?

    Outreach works best spread over several mailboxes, so the number grows quickly. In FirstSales, mailboxes, warm-up, team members and workspaces are unlimited on every plan. Adding the tenth mailbox costs the same as adding the first: nothing.

    • Unlimited mailboxes. Google, Microsoft or SMTP/IMAP.
    • Unlimited members. No per-seat price.
    • From $29/mo. No contract, cancel from the dashboard.
  2. Check 2 · Deliverability

    Is deliverability built in and on by default?

    Look for warm-up, domain record checks, contact checks and monitoring in the same tool. FirstSales checks SPF, DKIM and DMARC when you connect, warms up each mailbox for 21 days, checks every contact before each send, and watches every mailbox every hour with a health grade.

    • 21-day warm-up. Three phases, on every mailbox.
    • Hourly monitoring. With a health grade per mailbox.
    • Dirty contacts skipped. Bad addresses never get sent.
  3. Check 3 · Leads

    Can it find the people, or only email them?

    Buying a lead list separately adds cost and a step. FirstSales finds leads with AI search and Google Maps, so a local business list or a list of people in a role is a search away. You can still import your own.

    • AI search. Describe who you want to reach.
    • Google Maps. Local businesses by place and type.
    • Import your own. Checked like every other contact.
  4. Check 4 · Writing

    Can you send your own words and use AI too?

    Some campaigns need your exact copy. Others go faster with AI. FirstSales does both: Email Template mode sends your words with no AI writing, and the AI modes write each email from the contact's company and role.

    • Email Template. Your words, with no AI writing.
    • Needs approval. AI drafts wait for your yes.
    • A/B tests. See which version gets more replies.
  5. Check 5 · Access

    Can your team and your tools work with it?

    Outreach rarely lives in one app. FirstSales has a CLI, an API with an OpenAPI 3.1 spec and an MCP server, so scripts and AI tools can run campaigns too. Copilot, the in-app assistant, asks before it acts.

    • CLI. Run campaigns from a terminal.
    • API and OpenAPI 3.1. Build on the same API the app uses.
    • MCP. Connect AI tools to your workspace.
What one plan includes

Everything below is in the $29/mo plan. Nothing here is an add-on.

When you compare cold email software, the first price is rarely the last one. Extra mailboxes, warm-up, seats and lead data often cost more. In FirstSales they are part of the plan, so the price you see is the price you pay as you grow.

Sending

  • Unlimited mailboxes
  • Sends rotated across mailboxes
  • 21-day warm-up on every mailbox
  • Hourly monitoring and a health grade
  • SPF, DKIM and DMARC checks

Leads and writing

  • Leads from AI search and Google Maps
  • Contact checks before every send
  • Emails written from company and role
  • Your own templates, with no AI
  • A/B tests

Replies and team

  • Unibox for every reply
  • Built-in CRM
  • Unlimited team members
  • Unlimited workspaces
  • Analytics per campaign

For developers

  • CLI
  • API with an OpenAPI 3.1 spec
  • MCP server
  • Copilot, which asks before it acts
  • Real support, most questions answered the same day

From $29/mo. Try it for $1 for 3 days. No contract, cancel from the dashboard.

Three ways to write

Pick how much the AI does, campaign by campaign.

Good cold email software should fit how you work today and how you want to work later. FirstSales has three modes. You choose one for each campaign, and you can change your mind.

  1. Email Template

    Your words, sent well.

    You do
    Write the email and follow-ups yourself.
    FirstSales does
    Warm-up, contact checks, rotation and follow-ups that stop on a reply. No AI writing.
    Good for
    Teams with copy that already works.

  2. Needs approval

    AI drafts, you decide.

    You do
    Read each draft, then approve, edit or reject it.
    FirstSales does
    Writes every email from the contact's company and role, using your knowledge base.
    Good for
    Starting out, or any campaign you want to watch closely.

  3. AI Autopilot

    Writes, sends and answers.

    You do
    Set the goal and the people. Check in when you like.
    FirstSales does
    Writes and sends each email, follows up, and answers interested replies with your booking times.
    Good for
    Campaigns you trust, at the volume you want.
See it in the app

A day in FirstSales, in one feed.

This is what a working day looks like in a sample workspace. Warm-up runs, contacts get checked, drafts wait for approval, replies stop sequences and meetings land on the calendar. Most of it happens without you.

  • Warm-up. Runs on every mailbox.
  • Contact checks. Before every send.
  • Needs approval. Drafts wait for you.
  • Replies. Stop the sequence for that person.
Buyer's guide

How to choose cold email software

Questions worth asking any vendor, and what a good answer sounds like.

  1. 01

    Work out your real cost at twice the size

    Price the plan with double the mailboxes and teammates you have today. That is where per-mailbox and per-seat pricing shows. With FirstSales the number stays at your plan price.

  2. 02

    Ask what happens before each send

    Is every contact checked? Are bad addresses skipped automatically? Bounces hurt every later email, so this matters more than most features.

  3. 03

    Ask how warm-up works and how long it takes

    A clear schedule is a good sign. FirstSales uses 21 days in three phases, with a warm-up score you can watch.

  4. 04

    Check how you will know something is wrong

    Monitoring should be frequent and easy to read. FirstSales checks every mailbox every hour and gives each a health grade.

  5. 05

    Try both your own copy and the AI

    In a trial, run one campaign with your own template and one with AI drafts you approve. Compare the drafts with what you would have written.

  6. 06

    See where replies go

    Replies spread across ten inboxes are easy to miss. Look for one place that holds them all, ideally next to your deals.

  7. 07

    Look for a way out

    Monthly plans with no contract keep the vendor honest. FirstSales has no contract and you cancel from the dashboard.

  8. 08

    Talk to support before you buy

    Send a real question during the trial. How fast and how well they answer is what you will get later.

Cold email software

buyer's checklist

Copy this list into your notes and tick it off for each tool you try.

  • Price stays the same as you add mailboxes
  • No per-seat price for teammates
  • Warm-up included, with a clear schedule
  • SPF, DKIM and DMARC checked for you
  • Every contact checked before each send
  • Frequent monitoring with an easy health signal
  • Lead search built in
  • Your own templates and AI writing
  • A review step before AI emails send
  • One inbox for every reply
  • API or CLI access for your own tools
  • Monthly plan with no contract
“One of the biggest pains in cold email is making sure that you have your DNS setup correctly. Firstsales has created a system to make sure you have done this correctly.”
Mike OTrustpilot review · Trustpilot
What people say

From people who use it

Real words from real users. No paid reviews.

“I've been using FirstSales.io for several months now, and I can confidently say it has revolutionized how I approach lead generation and customer acquisition.”

Paweł Stelmach

Small business owner

Trustpilot

“User Interface, Ease of Use, Able to hit the inbox in the first attempt.”

Sadashiv B.

Founder, small business

G2

“I have always struggled in cold outreach. However, Firstsales has provided an excellent tool for cold outreach.”

Kaushal S.

Founder, small business

G2
Read all reviews
Before and after

A stack of tools vs one plan

What changes when sending, warm-up, leads and replies live in one place.

Several tools

A login and a bill for each job.

  • Sender priced per mailboxThe bill grows with every mailbox.
  • Warm-up in another toolAnother login to check.
  • Lead data bought separatelyThen cleaned by hand.
  • Replies in many inboxesEasy to miss one.
FirstSales

One plan, every part included.

  • Unlimited mailboxesOn every plan.
  • 21-day warm-up includedWith hourly monitoring.
  • AI search and Google MapsEvery contact checked first.
  • Unibox and CRMEvery reply in one list.
Side by side

A typical stack vs FirstSales

The jobs cold email software has to do, and where each one lives.

Cold email jobs in a stack of separate tools and in FirstSales
What you getSeparate toolsFirstSales
MailboxesOften priced per mailboxUnlimited, included
Warm-upSeparate tool21 days, included
MonitoringManual checksHourly, with a health grade
Domain recordsYour own DNS checksChecked on connect
LeadsBought listAI search and Google Maps
Contact checksSeparate toolBefore every send
WritingWritten by handTemplate, approval or Autopilot
RepliesEach inbox, then a CRMUnibox and built-in CRM
TeamPer seatUnlimited members
Developer accessVariesCLI, API, MCP
PriceSeveral billsFrom $29/mo
Start your $1 trial

Keep comparing

Questions,answered plainly.

Can’t find yours? Write to us.

01What is cold email software?

Cold email software sends personal emails to people who don't know you yet, at a volume you couldn't manage by hand. Good tools also protect your sender reputation, find leads, write or personalise each email, follow up and collect the replies.

02How much does FirstSales cost?

Plans start at $29/mo. You can try it for $1 for 3 days. There is no contract, and you cancel from the dashboard.

03Are mailboxes really unlimited?

Yes. Every plan includes unlimited mailboxes, warm-up, team members and workspaces. Adding a mailbox does not change your price.

04Do I have to use AI to write emails?

No. Email Template mode sends your own words with no AI writing. If you do use AI, Needs approval lets you approve, edit or reject each draft before it sends.

05Which mailboxes can I connect?

Google and Microsoft mailboxes, and any mailbox that supports SMTP/IMAP. SPF, DKIM and DMARC are checked when you connect.

06Does FirstSales find leads too?

Yes. Find people with AI search and Google Maps, or import your own list. Every contact is checked before each send, and Dirty contacts are skipped.

07Can I use FirstSales from my own tools?

Yes. There is a CLI, an API with an OpenAPI 3.1 spec and an MCP server, so scripts and AI tools can work with your campaigns.

08Is there a built-in CRM?

Yes. Replies from every mailbox land in Unibox, next to a built-in CRM, so you can follow a conversation from first email to meeting.

Outreach that keeps going after you log off.Leads, emails, follow-ups and replies, handled.

Connect unlimited mailboxes and let AI agents find leads, write each email and follow up. Or send your own templates in manual mode. From $29/mo.

Start your $1 trial See pricing

$1 for 3 days · Cancel anytime · No contract

Install with AI

Your coding agent sets up the FirstSales CLI and skills for you.

Prompt for Claude Code

I'm setting up FirstSales (https://firstsales.io), an AI outbound sales platform: campaigns, contacts, a reply inbox, deliverability and lead signals. Help me get my workspace sending real, good emails end to end, from Claude Code.

Read these first so you know how FirstSales works:
- Developer docs and API: https://developer.firstsales.io
- CLI: https://www.npmjs.com/package/@firstsales.io/cli
- Skills for coding agents: https://github.com/firstsalesio/firstsales-skills (read README.md and GUIDE.md)

Setup
1. Install the CLI: npm install -g @firstsales.io/cli
2. Install the FirstSales skills:
   claude plugin marketplace add firstsalesio/firstsales-skills
   claude plugin install firstsales@firstsales
3. Ask me if I already have a FirstSales account. If not, send me to https://app.firstsales.io to sign up.
4. Ask me to create an API key under Settings → API → API Keys, with only the scopes we need.
   Never ask me to paste the key into this chat. Tell me to run this in my own terminal, so the key stays hidden:
   read -rs FS_KEY && firstsales auth login --api-key "$FS_KEY"; unset FS_KEY
5. Run `firstsales whoami` and tell me which workspace and organisation we are connected to.

Then ask me about my business: what I sell, who I sell to (roles, company size, countries), my best customers, and what I use today for outbound (tools, lists, mailboxes). Walk me through:
1. Teaching FirstSales my business: website, offer, proof points and case studies in the knowledge base, so the AI writes like someone who knows the product.
2. Connecting my sending mailboxes and checking my sending domain: SPF, DKIM, DMARC and warm-up. If anything is unhealthy, tell me the exact DNS record to add.
3. Bringing in contacts: import my CSV or CRM export into a clean list, remove duplicates and bad emails, and block domains I must never email (customers, competitors, my own).
4. Building my first campaign: the right list, senders, steps and timing. Write the sequence with me, show me the drafts, and do not launch until I say yes.
5. Setting up Signals if it fits: find people engaging with LinkedIn posts about topics my buyers care about, and turn them into leads.
6. Inviting my team and giving each person the right access.

Once campaigns run, show me how to work the reply inbox from here: which replies need an answer, draft responses in my voice, and move good conversations into deals. If I use Cal.com, connect it so follow-ups can offer my booking link (not the first email).

Throughout, as you learn about my business, proactively suggest and help create:
- Reply templates for the questions and objections my prospects are likely to raise, based on my product, site and codebase if you can see them.
- Campaign ideas and segments worth testing, with the reason for each.

Safety rules:
- Show every change as a dry run (--dry-run) first and wait for my yes. Never send emails, launch campaigns or delete anything without my yes.
- Tell me before anything that spends credits, and how many.

Be opinionated. If the docs give a sensible default, just use it. Don't make me choose between five options.
Developer docs ↗npm: @firstsales.io/cli ↗GitHub: firstsales-skills ↗