Upwork home
Sign up
Secondary
Sebastian B. Status: Offline
Del Mar, CA , USA
93% Job Success
Top Rated

Email List building | Cold Email Software Setup | DKIM DMARC SPF

Hey there! I’m Sebastien B., and I help B2B companies grow by building high-converting email lists, setting up cold email systems, and optimizing deliverability to make sure your emails reach the inbox — not the spam folder. With over 3 years of experience in email outreach and list building, I’ve supported startups, SaaS firms, and marketing agencies in launching cold email campaigns that generate real results. Whether you’re just getting started or looking to improve your current strategy, I’ll help you build a scalable, reliable outreach engine. ⸻ ✅ What I Can Do for You 📩 B2B Email List Building & Prospect Research • Build targeted lead lists focused on CEOs, CMOs, Founders, and key decision-makers • Define and refine your Ideal Customer Profile (ICP) to ensure list accuracy • Extract and verify contact details: emails, phone numbers, LinkedIn profiles • Use tools like Apollo.io, LinkedIn Sales Navigator, Crunchbase, and Snov.io ⚙️ Email Deliverability & Domain Setup • Configure essential DNS records: SPF, DKIM, DMARC, MX • Set up domain warm-up routines for new inboxes to protect your sender reputation • Use tools like Warmup Inbox, Instantly Warmup, and Smartlead 📬 Cold Email Software Setup & Campaign Execution • Set up and manage tools like Instantly.ai, Lemlist, Apollo, Smartlead, Mailchimp, Mailgun, and Reply.io • Create email sequences, track open/reply rates, and run A/B tests • Run ongoing deliverability audits and improve sender score with ZeroBounce and NeverBounce ⸻ 🧰 Tools I Use: Lead Gen & Prospecting Tools: ✔ Apollo.io ✔ LinkedIn Sales Navigator ✔ ZoomInfo ✔ Hunter.io ✔ Snov.io ✔ Crunchbase ✔ Lusha ✔ Name2Email Deliverability & Email Verification: ✔ ZeroBounce ✔ NeverBounce ✔ MailTester ✔ Warmup Inbox Outreach Platforms: ✔ Instantly.ai ✔ Smartlead ✔ Lemlist ✔ Mailchimp ✔ Mailgun ✔ SendGrid ✔ SalesHandy ✔ Woodpecker ✔ Reply.io ✔ Outreach.io ✔ ActiveCampaign ⸻ 📈 Why Work With Me? I go beyond just building lists — I make sure your outreach system is technically sound, well-targeted, and ready to convert. Every step I take — from domain setup to contact enrichment — is built to help you land more replies and book more meetings. ⸻ 📩 Ready to boost your outbound strategy with clean data and strong infrastructure? Let’s connect — send me a message or invite me to your job for a fast response. Best regards, Sebastien B.
Work history
Sebastian B. has more jobs. Create an account to review them
Skills

Skills

Get started working with Sebastian quickly with these predefined projects.

Get started working with Sebastian quickly with these predefined projects.

You will get b2b lead generation, LinkedIn leads, prospect list and targeted list

From $100
2 days delivery

Browse similar freelancers