Decision guide
Outsourced SDR or a GTM engineering agency: how to choose
An outsourced SDR firm supplies people who call and email at volume, and suits a simple offer in a large market. A GTM engineering agency builds a research-first system you can open and approve, and tends to suit committee-bought deals and a few hundred target accounts.
Who it fits
Who each option suits
A good fit
Look elsewhere
Trellis · Included with every engagement
Trellis shows you the work.
Our own workspace, and every engagement runs in it. Our team does the finding and the writing. You decide in Trellis, and every reply lands there.
In a Lead Line Partners engagement, the work sits in Trellis while it can still change.
See TrellisWhat you can open
What you get
What each option delivers
Both aim at a qualified meeting with a buyer. They differ in what you are paying for.
An outsourced SDR firm
People, on a contract. An outsourced SDR team, sometimes sold as SDR as a service, prospects, qualifies leads and books meetings for your account executives. It usually comes in three models: dedicated reps, shared teams or a hybrid.
A GTM engineering agency
A system, run by a team. Market research, accounts with reasons, drafts a person approves, sending and reply handling, all visible in a workspace called Trellis. Your sellers place the calls.
What each hands to your sellers
The first conversation. An SDR firm books the meeting for your account executive. With Lead Line Partners, a reply goes to the seller it belongs to. Ask any firm what it commits to in writing.
How it runs
How the agency route runs
Research comes first, then signals, enrichment, drafts and sequencing. An AI coding agent we operate directly writes the first pass. Nothing sends until a person has signed off the drafts and the exact list. Trellis puts each decision in front of you when it is ready, which takes the place of a status meeting.
How an engagement runsEngagement
Monthly retainer
Minimum term
Six months
Month one
An immersive onboarding
Decision guide
Decide in three questions
Answer these about your business. Yes to the first points to an outsourced SDR firm. Yes to the second and third points to an agency.
- 01Is your market large, with an offer a rep can pitch after a short brief, and do you need pipeline fast? Yes to both means an outsourced SDR firm fits.
- 02Do several buyers sign off on one deal? Yes means accounts need research before anyone writes.
- 03Do you want to read why each account was picked, and each draft, before it goes out? Yes means an agency.
Quality
Why the work holds up
Our team has sold into Apple, Microsoft and Starbucks, and together we carry 50+ years of enterprise sales experience.
The alternatives
Outsourced SDR firm and GTM engineering agency, side by side
Firms vary, so read the outsourced SDR column as typical.
What you are buying
Outsourced SDR firmPeople's hours: reps who call, email and message for you, and book the meeting. Capacity scales with the number of reps.
GTM engineering agencyA system and the team that runs it: researched accounts, drafts a person approves, handled replies. Your sellers place the calls.
What you can see while it runs
Outsourced SDR firmUsually reports from the firm, and often call notes or a dashboard. Ask what you can open yourself.
GTM engineering agencyAccounts with reasons, drafts and replies in Trellis, while they can still change.
How targeting gets decided
Outsourced SDR firmOften from an ideal customer profile agreed at kickoff, then worked across a large market.
GTM engineering agencyAccount by account. Each arrives with a reason, and the reason you give for a decline shapes the next search.
What happens on a reply
Outsourced SDR firmUsually a rep qualifies the reply and, if it fits, books the meeting for your account executive.
GTM engineering agencyThe reply goes to the seller it belongs to, with the history in view. Our team can't reply in your name.
How quality is checked before a send
Outsourced SDR firmPractice differs by firm, and many use manager review and a playbook. Ask how it works and how often.
GTM engineering agencyA person approves the drafts and the exact list, and an employment check confirms each person still works there.
How you are billed
Outsourced SDR firmOften per dedicated rep, per shared team or per meeting.
GTM engineering agencyA monthly retainer with a six-month minimum. Trellis comes with the engagement, and its usage is itemized on the bill.
What ramp looks like
Outsourced SDR firmOften quick when the offer is simple, since reps work from a brief and training on your product.
GTM engineering agencyExpect setup work before the first send: month one is an immersive onboarding. By your first sign-in, Radar holds accounts waiting on your decision.
Cost
What outsourced SDRs cost, and how to compare quotes
The model sets the price: a dedicated rep, a shared team, a hybrid, or a fee per booked meeting. Compare quotes on cost per meeting, and ask what the fee leaves out. Ours is a monthly retainer with a six-month minimum, and month one is an immersive onboarding.
Questions
What buyers ask
Lead Line Partners is a GTM engineering agency that builds research-first outbound and account-based systems for B2B SaaS and services companies, with a person approving every send.