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Clean IPs & Domains
All accounts run on U.S. IPs and pre‑screened domains to maximise inbox placement.
Inbox ready full-configuration
Each prospect is verified across three independent sources to keep bounce rates low and ensure you’re reaching real decision‑makers.
Pre-vetted domains
We only offer fresh, blacklist‑free domains to protect your sender reputation from day one. You’ll never inherit someone else’s mistakes.
Trusted infrastructure
Accounts are provisioned on reliable providers with admin access, ensuring stable sending and strong inbox placement.
Buy a domain, choose your provider (Google, Outlook or high‑quality SMTP) and SmartSenders automates the entire setup—no technical know‑how required .
Accounts are ready within 24–48 hours, matching or beating industry turnaround times.
DNS configuration, inbox creation and warmup are all handled behind the scenes, so you can focus on outreach, not setup
Mix Google, Outlook and premium SMTP senders to avoid deliverability bottlenecks and spread risk across providers.
Spin up as many sending accounts as you need and manage them all from a single interface—perfect for agencies or growing teams.
Rotate across multiple domains to bypass throttling and spam triggers while maintaining consistent branding.
Dedicated domain panels
Each domain has its own isolated admin panel; if one domain’s reputation dips, others stay unaffected.
Real-time health checks & alerts
Built‑in monitoring scans for blacklist issues, DNS errors and reputation drops, so you can resolve problems before they affect campaigns.
Complete isolation
Domains are never shared—no cross‑contamination or hidden risks, just reliable sending.
View and manage responses from all campaigns and clients in one shared inbox—no more switching accounts.
Auto-Categorise replies by intent, leave notes, schedule follow‑ups and apply bulk actions like assign, archive or forward—all from one dashboard.
An AI reply manager prioritises hot leads, triggers next steps and syncs everything back to your CRM so nothing slips through the cracks.
Get AI-native operating system for your enterprise sales team
Book a DemoFounder, StackOptimise
Smartlead's combination of automation, unlimited inboxes, and easy campaign management has completely transformed how we run cold email campaigns.
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Founder, Cold Email Hackers
We have about 15 companies and we use Smartlead for all of them.
Founder, DutchSave Media
One of the things I love about using Smartlead is the deliverability feature. If they landed in the bounce or spam folders, we could resolve this quickly.
Co-Founder, Growth Today
I want to continue to use Smartlead to make operations more seamless - the plan is to bring more clients here and build more SOPs.
Founder, FueltoFly
Smartlead listens to the agencies and customers and builds according to what people want, that has really made things easier for us.
Founder, OutboundSync
We build an infrastructure product, and OutboundSync communicates with Smartlead itself. I love the webhook and API. They're really well done and keep getting better.
Founder, Axoleads
With SmartDelivery, you can put all of that in the hands of the tool. It ensures your emails land in inboxes, and by running a simple test, you can see if you're hitting the mark.
Founder, Claygen
Deliverability is the cornerstone of cold email outreach. You could have the best email copy in the world, but if no one is seeing it, it's useless. I really love the feature where you can actually give client accesses to your clients.
Co-Founder, Cymate
I do not want to switch to another software. Pick a solution you trust, stick with it, and keep refining your copy.
CMO, Avalanche Capital
Managing large volumes of emails through multiple inboxes used to be a logistical nightmare. With Smartlead, the process is seamless. We book thousands of discovery calls through cold emails. These campaigns are generating leads at a scale we never thought possible.
Founder, Growth Engine X
We came for the unlimited inboxes, and we stayed for the API. 1.5M cold emails/month, 7,767+ inboxes managed.
Head of Community & Ecosystem, TxtCart
You cannot replace having 10,000 touches with potential clients. When you have that much distribution and reach, you really start to see incredible results. The simplicity of Smartlead made all the difference. It doesn't require you to be a technical wizard.
Founder, Hyperke
Smartlead has been a game-changer for us. It increased our appointment volume, improved ease of use, and offered valuable features. 80% increase in appointments/month, peak of 276 appointments in a single month.
Founder, Kinetyca
Smartlead has been our cold email backbone from day one. The platform evolves constantly, keeping pace with how deliverability and personalization need to work today. 21% overall reply rate, $175K in 4 months for multiple B2B clients.
Founder, Reachflow
Smartlead is centered around deliverability and constantly evolving. Their API is not like any other platform. Smartlead covers all our needs. The focus on core features like deliverability and API integration is unmatched.
CEO, Halfwarm
Our approach to crafting conversational emails led to reply rates that many of my peers thought were unattainable.
Co-Founder, letstrike
We've grown on zero capital, zero marketing, purely cold emailing - and that's the story we love to tell. The best approach is no approach if you can't handle domain meltdown. The second best is something like Smartlead that's built from the ground up for deliverability at scale.
Founder, Fenixtal
Smartlead's white-labeling and automation let us punch above our weight. The 12M euros sales potential? That's what happens when you combine human creativity with Smartlead's precision.
Co-Founder, Digital Creativs
Nine out of 10. Ninety percent of our clients are on Smartlead unless they come in with an existing setup. That's the default.
Co-Founder, BuildingReach
At the end of the day, you have to take a bet on one tool or another. It was a no-brainer taking that bet on Smartlead. We had to even turn down the volume of our marketing campaigns - Smartlead was capable of driving more volume than our sales team was able to fulfill.
Founder & MD, Prospectiv
Since starting the business in January of this year, we've already generated $200K in sales exclusively from cold email. Smartlead has been central to our operations and has exceeded our expectations.
Founder, Growthlynk
There's so much stuff built on top of it. I would be dead if I had to rebuild it with another tool. I can manage hundreds of senders easily. I can send hundreds of thousands of emails.
Founder, Corebits
The platform's HubSpot integration, real-time Slack updates, and advanced campaign customization have been game changers for our business and our clients'.
Founder, Apex Ascension
From day one, we've never used anything else.
SmartSenders is Smartlead's built-in email infrastructure setup feature that lets you purchase domains and mailboxes directly inside the platform. Instead of dealing with multiple providers and manual configurations, you select your domain, choose Google, Outlook, or SMTP mailboxes, and SmartSenders handles the entire setup automatically. All DNS records including SPF, DKIM, and DMARC are configured for you.
SmartSenders currently supports Google, Outlook, and SMTP mailboxes. You can purchase these mailboxes from trusted providers like Zapmail, InfraInbox and Mailreef. Each provider comes pre-configured with authentication records and deliverability best practices. Smartlead has indicated plans to include more email service providers in the future.
No technical knowledge is required. SmartSenders handles the entire infrastructure setup including DNS configuration, mailbox creation, and authentication record setup automatically. MX, SPF, DKIM, and DMARC records are all configured for you.
Mailboxes purchased through SmartSenders are activated within 24 to 48 hours. This window is required for DNS record propagation to complete properly across all email providers. Once activated, mailboxes are connected directly to your Smartlead account and ready for warmup and campaign use.
SmartSenders provides access to pre-vetted vendors and ensures that all technical configurations are handled automatically. It also offers optimized infrastructure for deliverability and removes the need to manage multiple providers separately. Additionally, mailboxes are often available at more competitive pricing compared to traditional resellers.
Yes, standard mailboxes purchased through SmartSenders are new inboxes with no prior sender history, so warmup is required before running campaigns. However, SmartSenders also offers pre-warmed mailboxes through Zapmail that have already completed the warmup process and are ready to send from on the same day, bypassing the typical 2 to 3 week warmup period.
SmartSenders improves deliverability in several ways. Domains come with correctly configured authentication records, high-quality US IPs, and DNS management. Each domain operates in its own isolated workspace, so a reputation issue on one domain does not affect others. You can also diversify sending across Google, Outlook, and SMTP providers within the same campaigns to avoid single-provider dependency and reduce spam triggers.
All DNS records including SPF, DKIM, DMARC, and CNAME records for custom domain tracking are configured automatically when you purchase a domain through SmartSenders. There is no manual input required from the user. This ensures your domains are correctly authenticated from day one and reduces the risk of emails landing in spam due to misconfigured records.
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