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Sebastian Grinkraut, CEO of Agile B2B Sales, leads a dynamic lead generation and SDR (Sales Development Representative) agency headquartered in Argentina with offices in the US.
Agile B2B Sales specializes in running lead generation and appointment-setting campaigns for clients across the globe, with a focus on the US market.
The agency operates under two primary models: providing turnkey solutions for clients and embedding in-house SDR teams to handle cold calling and outreach.
With a background in engineering and decades of sales expertise, Sebastian and his co-founder (a Stanford MBA graduate) built Agile B2B Sales to help businesses scale their sales operations.
Their unique ability to translate complex technical products into compelling sales narratives has made them a trusted partner for clients across multiple industries.
Agile B2B Sales faced quite a few challenges – despite using some of the best cold email outbound tools in the market – in scaling their operations and delivering consistent client results. This is when they decide to switch to Smartlead to help them with the following issues:
The agency relied on multiple tools that lacked robust API capabilities and automation features.
Managing email deliverability across multiple campaigns and clients was time-consuming and inefficient.
Reporting, list management, and campaign optimization required significant manual effort, slowing down scalability and lead generation.
Existing tools lacked the flexibility to integrate with their internal systems or provide advanced analytics for decision-making.
Sebastian discovered Smartlead through industry peers and was immediately impressed by its advanced API capabilities and automation features.
Smartlead’s ability to centralize advanced API capabilities, enhance deliverability, Spintax, inbox rotation, and real-time analytics made it the ideal solution for Agile B2B Sales’ growing needs.
Smartlead’s robust API allowed Agile B2B Sales to automate list uploads, reporting, and campaign tracking processes. This eliminated manual tasks and enabled the team to focus on strategy and execution.
Sebastian highlighted, “The API is a game-changer for us. We built custom dashboards to cross-reference Smartlead’s analytics with our internal data, giving us unparalleled insights into campaign performance.”
Smartlead’s SmartDelivery feature helped the agency test email copy and accounts to ensure high deliverability rates. Combined with SmartServers, Agile B2B Sales could avoid spam filters and maintain consistent inbox placement.
“SmartDelivery and SmartServers have been instrumental in helping us navigate the ever-changing deliverability landscape,” said Sebastian.
Smartlead’s ability to separate client accounts within the platform streamlined campaign management and reporting. This feature and white-labeling capabilities enhanced the agency’s professionalism and transparency with clients.
Agile B2B Sales leveraged Smartlead’s A/B testing and spintax features to optimize email copy and improve reply rates. These tools allowed the team to craft hyper-personalized campaigns that resonated with high-value prospects.
Sebastian emphasized Smartlead’s unmatched scalability, automation capabilities, and continuous innovation as key reasons for its success:
“Smartlead’s API is a game-changer. We’ve automated manual processes that would have taken hours, saving us time and resources.”
“The platform’s ability to adapt to deliverability changes and provide real-time insights has been critical to our success.”
Sebastian is excited about Smartlead’s future developments, particularly enhanced API endpoints and deeper integration capabilities. He also highlighted the importance of mirroring new features in the API to ensure seamless automation and reporting.
Since partnering with Smartlead, Agile B2B Sales has transformed its lead generation operations, delivering exceptional results for clients across industries, which is evident from the results.
With advanced tools for automation, deliverability, and campaign management, Smartlead has become an indispensable part of their agency’s success.
For agencies and businesses looking to scale their outbound efforts and book high-value meetings, Smartlead offers a proven, scalable solution. Again, you’ve seen the results, and now it’s time for you to try them out for yourself with our 14-day free trial.
Join us to elevate your outreach!
Founder, 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.
