AI SDR · prospect → personalize → book, 24/7
An AI SDR that books meetings while you sleep
FirstSales finds your buyers, writes and personalizes every email, follows up on its own, and books replies straight to your calendar, around the clock. It warms up and cleans as it sends, so 87% lands in the primary inbox, not spam.
- Finds and researches leads automatically, no list to upload
- Writes and personalizes every email from your knowledge base
- Follows up and handles replies until the meeting is booked
- 87% primary-inbox placement, warm-up and cleaning built in
$1 for 3 days · Cancel anytime · No SDR salary required
The AI SDR Gap
Most AI SDRs write a lot and book almost nothing
Writing cold emails was never the hard part, software has done that for years. Booking the meeting is. That means reaching a real human inbox, following up like a person, and turning a reply into a calendar invite. That's the gap most AI SDRs quietly skip.
A Dashboard Full of "Sent," a Calendar That's Empty
Plenty of AI SDRs fire off thousands of emails and show you impressive activity. But activity isn't pipeline. If the messages never reach a human, or never get a second follow-up, the meetings never land, no matter how good the copy was.
It Probably Never Reached a Human
1 in 5 cold emails lands in spam (Mailshake 2025 Report). An AI SDR with no warm-up and no list cleaning torches your domain in week one, then keeps sending into folders nobody opens. You see "delivered" while prospects see nothing.
We Optimize for Booked Meetings, Not Email Count
FirstSales runs warm-up, list cleaning, and real-time monitoring underneath every send, so an average of 87% reaches the primary inbox. Then it follows up and books the call. The number that matters was never emails sent, it's meetings on your calendar.
From Zero to Booked
Your AI SDR, live in 8 minutes
There's no playbook to write and no rep to train. Connect your inbox, let it warm up, and your AI SDR starts finding leads, writing, sending, following up, and booking, on its own.
Connect your inbox and your ICP
Connect Gmail, Outlook, or any provider and tell the AI who you sell to. We auto-configure SPF, DKIM, and DMARC, so there's no IT ticket and no DNS headache to deal with.
One-click inbox connection Gmail, Outlook, or any SMTP, connected in seconds.
Authentication on autopilot SPF, DKIM, and DMARC configured for you automatically.
Describe your buyer once The AI uses your ICP to source and research leads.
It warms up and cleans while you watch
Smart warm-up builds domain trust over 21 days, and list cleaning strips invalid emails and spam traps before the first real send. You watch your sender reputation climb in real time.
21-day smart warm-up Reputation built gradually, the way inbox providers trust.
List cleaning before every send Bounces, traps, and dead accounts removed automatically.
Live deliverability monitoring See exactly where your emails land, updated hourly.
Your AI SDR takes over the funnel
It sources leads, writes and personalizes every email, sends on a human-like schedule, follows up until they reply, and books interested prospects straight to your calendar, around the clock.
Finds and writes for you No lists to upload, no templates to maintain.
Never misses a follow-up Sequences keep going so warm leads never go cold.
Books the meeting Interested replies become calendar invites, hands-free.
Proof, Not Promises
Founders and SDRs who let the AI do the grind
Teams use FirstSales to run the outreach that used to eat their whole week, and get the replies to show for it.
If you are looking to fix your sales pipeline, you should definitely try. @iuditg is the OG in cold emailing, and the product they have built- is futuristic and screams a deep understanding of email marketing. + My open rate has increased drastically, + The UI and UX are easy to understand, even for a beginner like me.
HOW THE AI SDR WORKS
One AI SDR. Your entire top of funnel.
A human rep researches, writes, sends, follows up, and chases every reply. FirstSales runs all of it autonomously, then hands you a calendar full of booked meetings.
It finds and researches your buyers
Describe your ideal customer once. The AI SDR scrapes the web to build a targeted list and researches each lead, so every email opens with a reason that's actually about them.
No list to upload It sources leads that match your ICP for you.
Researches every prospect Pulls real, current context on each company and person.
Cleans as it builds Invalid emails and spam traps removed before the first send.
It personalizes and chases every reply
The AI writes each first email and follow-up from your knowledge base in your voice, sends on a human-like schedule, and keeps the thread going until the prospect responds.
Personalized, not templated Every email is written for that one prospect.
Automatic follow-ups Multi-step sequences that stop the moment they reply.
On-brand voice Guardrails and instructions keep it sounding like you.
It lands in the inbox and books the meeting
Built-in warm-up and live deliverability monitoring keep 87% in the primary inbox. When a prospect is interested, the AI books the meeting straight to your calendar.
87% primary inbox Warm-up and monitoring run continuously in the background.
Books to your calendar Interested replies turn into meetings, hands-free.
You see everything Live dashboard of sent, replied, and booked.
AI SDR vs the old way
A human SDR vs your FirstSales AI SDR
Same job, top-of-funnel outreach, run two very different ways. Here's what changes when an AI SDR runs it around the clock instead of a person grinding through it by hand.
- $5,000+/month, plus ramp
- Salary, tools, and 3+ months before a rep is fully productive.
- A few dozen emails a day
- Real personalization takes time, so daily volume stays low.
- Follow-ups get forgotten
- Busy weeks mean warm prospects never get the day-3 or day-7 nudge.
- Stops at 6pm and on weekends
- Pipeline only moves while someone is sitting at the desk.
- Deliverability is an afterthought
- Emails slip into spam and nobody notices until results dry up.
- Leaves when they leave
- Turnover takes the playbook, the context, and the momentum with it.
- $1 to start, then from $29/mo
- No salary, no headcount, cancel anytime.
- Personalized at scale
- Every email researched and written for one prospect, all day long.
- Never misses a follow-up
- Sequences run on schedule and stop the second a prospect replies.
- Runs 24/7, including weekends
- Your pipeline fills while you sleep, across every time zone.
- Deliverability built in
- Warm-up, cleaning, and monitoring keep 87% in the primary inbox.
- Keeps every bit of context
- Your ICP, voice, and knowledge base stay, no matter who's on the team.
AI SDR vs sending tools
FirstSales vs Instantly, Lemlist & Smartlead
Most "AI" cold-email tools just send faster. An AI SDR has to find the leads, write the emails, land them, and book the meeting. Here's how the jobs actually compare.
| What an AI SDR should do | FirstSales | Other tools |
|---|---|---|
| Finds and researches leads for you | Included | You do it |
| Writes and personalizes every email | Included | Templates |
| Follows up until they reply | Included | Varies |
| Books the meeting to your calendar | Included | Manual |
| Inbox placement rate | 87% average | 60-70% average |
| Warm-up + list cleaning included | Included | Paid add-on |
| Entry price | $29/mo | $94-358/mo |
| Setup time | 8 minutes | Varies |
Hire your AI SDR for $1
Spin up an AI SDR that prospects, writes, follows up, and books meetings 24/7. No new headcount, no spam folder.
Start your $1 trial$1 for 3 days · Cancel anytime · 87% inbox placement
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