Service firm experiences 5x ROI from an automated outbound engine

50+ meetings booked, $500K+ in pipeline, and a 5x ROI from one automated engine.

Client

Service Firm

Services

Cold Email, LinkedIn Outreach

Industry

Service Firm

Timeline

7 months

About project:

Lumio worked with an engineering and estimating services firm that had a service that applied to contractors in every trade and region across the country. Even with such a big ICP they had no way to reach that market at scale. With over 1.7 million U.S. construction firms in their addressable market, the opportunity was massive. The constraint wasn't demand; it was reach and repeatability. Manual prospecting couldn't scale past a trickle, there was no central enriched database to work from, and any real volume of outreach risked deliverability problems with no system in place to track or follow up.

Lumio partnered with this client to build a nationwide contractor-acquisition engine from the ground up. A 100,000+ contractor database segmented by trade, location, and buying signals, paired with automated, multi-channel outreach across email and LinkedIn. Every layer, from lead sourcing to deliverability to CRM reporting, was built, run, and optimized as one coordinated system, turning a fragmented national market into a structured, repeatable pipeline.

What we did:

Building the database

We sourced and enriched a database of over 100,000 contractors and subcontractors across all 50 states, segmented by trade, CSI division, company size, location, and project type. Buying signals, active bids, hiring activity, and expansion news were considered buying signals to prioritize outreach towards the contractors most likely to convert, rather than working the list in a flat, unordered sequence.


Standing up the infrastructure

Before outreach began, we built a dedicated sending infrastructure isolated from the client's primary domain, with SPF, DKIM, and DMARC enforced on every domain and automated mailbox warmup running through Instantly. Inbox rotation across the mailbox pool kept sending volume safe at scale, holding inbox placement above 90% with a bounce rate under 2%.


Launching multi-channel outreach

Every contractor entered a coordinated sequence.

  1. A personalized email by trade and project type

  2. LinkedIn connection request

  3. Follow-up email with a relevant estimating sample

  4. Value message to accepted LinkedIn connections

  5. Final breakup email with a direct booking link.

Automation workflows built in N8N connected lead sourcing, sending, and the CRM into a single pipeline, cutting manual prospecting workload by over 80%.


Tracking the pipeline

Every email, connection, and reply was logged automatically, with qualified prospects routed and assigned without manual entry this gave the client full visibility into reach and engagement across a market too large to track by hand.

Impact:

$500K

generated (80% lower cost)

850+

Meetings booked

5x

ROI

Service firm experiences 5x ROI from an automated outbound engine

50+ meetings booked, $500K+ in pipeline, and a 5x ROI from one automated engine.

Client

Service Firm

Services

Cold Email, LinkedIn Outreach

Industry

Service Firm

Timeline

7 months

About project:

Lumio worked with an engineering and estimating services firm that had a service that applied to contractors in every trade and region across the country. Even with such a big ICP they had no way to reach that market at scale. With over 1.7 million U.S. construction firms in their addressable market, the opportunity was massive. The constraint wasn't demand; it was reach and repeatability. Manual prospecting couldn't scale past a trickle, there was no central enriched database to work from, and any real volume of outreach risked deliverability problems with no system in place to track or follow up.

Lumio partnered with this client to build a nationwide contractor-acquisition engine from the ground up. A 100,000+ contractor database segmented by trade, location, and buying signals, paired with automated, multi-channel outreach across email and LinkedIn. Every layer, from lead sourcing to deliverability to CRM reporting, was built, run, and optimized as one coordinated system, turning a fragmented national market into a structured, repeatable pipeline.

What we did:

Building the database

We sourced and enriched a database of over 100,000 contractors and subcontractors across all 50 states, segmented by trade, CSI division, company size, location, and project type. Buying signals, active bids, hiring activity, and expansion news were considered buying signals to prioritize outreach towards the contractors most likely to convert, rather than working the list in a flat, unordered sequence.


Standing up the infrastructure

Before outreach began, we built a dedicated sending infrastructure isolated from the client's primary domain, with SPF, DKIM, and DMARC enforced on every domain and automated mailbox warmup running through Instantly. Inbox rotation across the mailbox pool kept sending volume safe at scale, holding inbox placement above 90% with a bounce rate under 2%.


Launching multi-channel outreach

Every contractor entered a coordinated sequence.

  1. A personalized email by trade and project type

  2. LinkedIn connection request

  3. Follow-up email with a relevant estimating sample

  4. Value message to accepted LinkedIn connections

  5. Final breakup email with a direct booking link.

Automation workflows built in N8N connected lead sourcing, sending, and the CRM into a single pipeline, cutting manual prospecting workload by over 80%.


Tracking the pipeline

Every email, connection, and reply was logged automatically, with qualified prospects routed and assigned without manual entry this gave the client full visibility into reach and engagement across a market too large to track by hand.

Impact:

$500K

generated (80% lower cost)

850+

Meetings booked

5x

ROI

Service firm experiences 5x ROI from an automated outbound engine

50+ meetings booked, $500K+ in pipeline, and a 5x ROI from one automated engine.

Client

Service Firm

Services

Cold Email, LinkedIn Outreach

Industry

Service Firm

Timeline

7 months

About project:

Lumio worked with an engineering and estimating services firm that had a service that applied to contractors in every trade and region across the country. Even with such a big ICP they had no way to reach that market at scale. With over 1.7 million U.S. construction firms in their addressable market, the opportunity was massive. The constraint wasn't demand; it was reach and repeatability. Manual prospecting couldn't scale past a trickle, there was no central enriched database to work from, and any real volume of outreach risked deliverability problems with no system in place to track or follow up.

Lumio partnered with this client to build a nationwide contractor-acquisition engine from the ground up. A 100,000+ contractor database segmented by trade, location, and buying signals, paired with automated, multi-channel outreach across email and LinkedIn. Every layer, from lead sourcing to deliverability to CRM reporting, was built, run, and optimized as one coordinated system, turning a fragmented national market into a structured, repeatable pipeline.

What we did:

Building the database

We sourced and enriched a database of over 100,000 contractors and subcontractors across all 50 states, segmented by trade, CSI division, company size, location, and project type. Buying signals, active bids, hiring activity, and expansion news were considered buying signals to prioritize outreach towards the contractors most likely to convert, rather than working the list in a flat, unordered sequence.


Standing up the infrastructure

Before outreach began, we built a dedicated sending infrastructure isolated from the client's primary domain, with SPF, DKIM, and DMARC enforced on every domain and automated mailbox warmup running through Instantly. Inbox rotation across the mailbox pool kept sending volume safe at scale, holding inbox placement above 90% with a bounce rate under 2%.


Launching multi-channel outreach

Every contractor entered a coordinated sequence.

  1. A personalized email by trade and project type

  2. LinkedIn connection request

  3. Follow-up email with a relevant estimating sample

  4. Value message to accepted LinkedIn connections

  5. Final breakup email with a direct booking link.

Automation workflows built in N8N connected lead sourcing, sending, and the CRM into a single pipeline, cutting manual prospecting workload by over 80%.


Tracking the pipeline

Every email, connection, and reply was logged automatically, with qualified prospects routed and assigned without manual entry this gave the client full visibility into reach and engagement across a market too large to track by hand.

Impact:

$500K

generated (80% lower cost)

850+

Meetings booked

5x

ROI

Engineering intelligent sales systems that transform complex operations into scalable, high-performance ecosystems driven by strategy, automation, and business impact.

© 2026 Lumio. All rights reserved.

Lumio

Engineering intelligent sales systems that transform complex operations into scalable, high-performance ecosystems driven by strategy, automation, and business impact.

© 2026 Lumio. All rights reserved.

Lumio

Engineering intelligent sales systems that transform complex operations into scalable, high-performance ecosystems driven by strategy, automation, and business impact.

© 2026 Lumio.

Lumio