Built for marketing agencies & founders
The AI cold email engine that wins clients and runs their outbound
Agencies live or die by pipeline — your own and your clients'. FirstSales warms every domain, personalizes each message, and follows up autonomously, so you fill your own roster and run inbox-landing campaigns for every client from one platform.
- 87% primary-inbox placement across every client domain you send from
- Run isolated campaigns per client in separate workspaces, one login
- AI personalizes outreach for any brand, niche, or offer at scale
- Launch in 8 minutes, unlimited mailboxes, from $29/mo
No credit card required · Cancel anytime · Setup in 8 minutes
Why agencies switch
Outbound that wins clients, not spam complaints
Agencies juggle their own pipeline and a dozen client campaigns across different domains and brands. The ones that win land in the inbox, sound like each client, and never miss a follow-up. FirstSales does all three automatically.
Lands in the primary inbox
21-day AI warm-up, free list cleaning, and SPF/DKIM/DMARC done right push every client domain to 87% inbox placement — so a deliverability slip never costs you a retainer.
Speaks every client's brand
The AI writes from a per-client knowledge base of each offer, ICP, and positioning, so a SaaS client and a local services client each sound like themselves — not the same template.
Books meetings on autopilot
It follows up across every campaign until the prospect replies or books, then routes the reply to you. Your own roster and your clients' calendars fill withqualified meetings.
How it works for agencies
From new client to booked meetings in three steps
Spin up a workspace per client, point FirstSales at their ICP, and let the AI run the outbound motion your team can't scale by hand.
Connect each client's mailboxes and warm up
Add a workspace per client, plug in their sending accounts, and let the 21-day AI warm-up build reputation on every domain before a single prospect is touched.
Isolated workspace per client Each client's contacts, mailboxes, and replies stay fully separate from every other account.
21-day automated reputation warm-up Every new client domain builds sending trust before a single prospect is touched.
Guided SPF, DKIM, and DMARC setup Authentication is verified per domain so a client misconfiguration never tanks deliverability.
Feed the AI each client's brand
Drop in each client's positioning, offer, ICP, and proof points. The AI uses that per-client knowledge base to write outreach that sounds like the client — not your agency's house voice on repeat.
Per-client product knowledge base Each client's offer, ICP, and proof points are stored and referenced independently.
AI personalization from real prospect data Prospect role, industry, and company size shape every message for that client.
On-brand copy for every account A SaaS client and a local services client each receive outreach in their own voice.
Let it send, follow up, and book
FirstSales sends across every client, monitors deliverability, and follows up autonomously until the prospect replies or books — then hands each conversation to you in a unified inbox per workspace.
Autonomous multi-step follow-up Every client campaign runs follow-up sequences without your team manually scheduling each touch.
Real-time deliverability monitoring Domain health tracked per client so one bad send rate never harms another account.
Unified inbox per client workspace Replies for each client stay in their own inbox, preventing any cross-account confusion.
Proof, not promises
Agencies and founders who let the AI run the outbound
Teams use FirstSales to run the cold outreach that used to eat their whole week — for themselves and their clients — 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.
What you get
Everything an agency needs to run cold email for every client
Deliverability, AI writing, and automation in one platform — so you don't stitch together a verifier, a warm-up tool, and a sequencer, then multiply that mess by every client you onboard.
Land in the inbox, on every client domain
Warm-up, free cleaning, authentication, and live monitoring protect every domain across every client so your outbound stays in the primary inbox at scale — and nobody's campaign tanks.
21-day smart warm-up Each new client domain ramps gradually so inbox providers accept it from day one.
Free automated list cleaning Invalid addresses scrubbed before sending so no client list degrades reputation.
Real-time inbox monitoring Per-domain alerts fire before a deliverability slip costs a client their retainer.
Personalization that sounds like each client
The AI researches each prospect and writes from the right client's knowledge base, so a 5,000-contact campaign reads like 5,000 one-to-one emails in that brand's voice.
Knowledge-base-grounded copy The right client's offer and proof points drive each email, never a recycled template.
Per-prospect personalization Firmographic and intent signals tailor the message to each individual contact.
Each client's voice and positioning Brand tone stays consistent whether the client is a SaaS company or a local service.
Follow-up that never forgets a client
Multi-step sequences with smart stop-on-reply mean every prospect in every client campaign gets the follow-ups that book meetings — without your team manually babysitting a dozen inboxes.
Autonomous follow-up sequences Every prospect across all client campaigns moves through timed touches without manual effort.
Smart stop-on-reply The moment a prospect responds, their sequence halts across that client's campaign.
Books meetings around the clock Client follow-up runs continuously, capturing replies outside your agency's working hours.
Before & after
What changes when agency outbound runs itself
The old way burns client domains and your team's hours. The FirstSales way fills your roster and every client's pipeline while you focus on strategy and retention.
- Client emails land in spam
- Cold sends hit promotions or spam, the client sees no results, and the retainer is at risk.
- Generic templates per client
- The same blast recycled across brands ignores each offer and ICP, so reply rates flatline.
- Logins for every client
- Juggling separate tools and dashboards per client wastes hours and invites cross-account mistakes.
- Burned client domains
- Aggressive sending without warm-up torches a client's sender reputation — and your reputation with it.
- Stitched-together tools
- A verifier here, a warm-up tool there, a sequencer somewhere else — billed again for every client.
- Can't prove ROI
- No clear view of inbox placement, replies, and meetings makes renewals a guessing game.
- 87% inbox placement
- Warm-up, cleaning, and authentication keep every client domain in the primary inbox at scale.
- AI-personalized per brand
- Every email is written from the right client's knowledge base to the specific prospect.
- One login, isolated workspaces
- Run each client in a separate workspace from a single account — no cross-account slip-ups.
- Protected client reputation
- Smart throttling and live monitoring keep every client domain healthy.
- One platform
- Deliverability, AI, and automation in a single tool from $29/mo — not a stack per client.
- Reportable results
- Inbox placement, replies, and booked meetings per client make renewals easy to defend.
How we compare
FirstSales vs the tools agencies usually stack
Most agencies duct-tape a sending tool to a verifier and a warm-up service — then pay for that stack again for every client. FirstSales does all of it, per client, and writes the emails too.
| What matters | FirstSales | Other tools |
|---|---|---|
| Primary-inbox placement | 87% average | 60-70%, no guardrails |
| Isolated workspace per client | Included | Separate logins or accounts |
| 21-day AI warm-up | Included | Paid add-on or none |
| Free list cleaning | Included | Pay a separate verifier |
| AI writes from each client's knowledge base | Included | Static templates |
| Autonomous follow-up to booked meeting | Included | Manual sequences |
| Unlimited mailboxes | Included | Per-mailbox pricing |
| Entry price | $29/mo | $80-200+/mo stacked, per client |
Fill your roster and every client's pipeline on autopilot
Let the AI warm your domains, write in each client's voice, and follow up until the meeting is booked. Start free in 8 minutes.
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FAQs
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