A link building vendor should be evaluated on method, relevance, editorial quality, control, and evidence—not only on how many links it promises or the third-party authority metrics shown in a sales deck.

This checklist is designed for agencies that need a repeatable procurement and QA process. It can be used before signing a partner and again during ongoing delivery.

If your agency is comparing fulfillment options, AxiomLift’s white label link building page describes the related service scope.

1. Acquisition method

Ask the vendor to explain how a link moves from prospect discovery to publication.

  • Prospecting method is explained clearly.
  • Outreach method is explained clearly.
  • The vendor distinguishes editorial outreach from paid/sponsored arrangements.
  • Automated link creation is not hidden behind vague language.
  • The vendor can explain who creates or edits surrounding content.
  • The vendor can explain whether it owns, controls, brokers, or simply contacts the publisher network.

Fail condition: the vendor refuses to explain how placements are obtained.

2. Search-policy awareness

Google’s spam policies list buying or selling links for ranking purposes, excessive exchanges, automated link creation, and other manipulative tactics as link spam. Advertising or sponsorship links should be properly qualified rather than passed as ranking credit.

  • Vendor policy does not depend on manipulative link schemes.
  • Paid relationships can be disclosed to the agency.
  • Link attributes can be reviewed.
  • The vendor does not promise guaranteed rankings from links.
  • The agency can reject tactics outside its risk policy.

A vendor does not need to repeat Google’s documentation word for word, but it should understand the risk environment it is operating in.

3. Topical and audience relevance

A strong domain metric does not make an irrelevant placement useful.

For a sample of proposed sites, ask:

  • Does the site cover topics related to the client’s market or audience?
  • Would a real reader plausibly move from the article to the client’s page?
  • Is the linking article itself relevant?
  • Does the site publish coherent topic clusters rather than unrelated sponsored subjects?
  • Is the client mention natural rather than inserted into a disconnected paragraph?

Use the backlink quality guide beyond DA and DR for a deeper site/page review.

4. Editorial quality

Review actual live examples, not screenshots of metrics.

  • Articles have a real purpose beyond containing links.
  • Writing is coherent and factually responsible.
  • The site does not appear dominated by low-value commercial posts.
  • Client claims are not invented.
  • Outbound links are contextually placed.
  • Content can be reviewed before publication when the client requires it.

For regulated clients, add the client’s own legal/compliance requirements to this section.

5. Anchor and destination controls

The agency should know what page is being linked and how anchor language is chosen.

  • Target URL is approved.
  • Anchor guidance is documented.
  • Vendor is not pushing exact-match anchors by default.
  • Brand and natural-language anchors are supported.
  • Redirected or changed destinations can be handled cleanly.
  • Final report records the live anchor text.

6. Prospect approval

Decide when the agency sees the opportunity.

Possible models:

Pre-approval: agency approves the domain or page before outreach/placement.

Post-outreach approval: vendor validates interest first, then the agency approves before publication.

Managed policy: vendor operates under agreed criteria without case-by-case approval, with audit rights.

Whichever model you choose:

  • Approval timing is documented.
  • Rejected prospects are not billed as completed work.
  • Final placement cannot be materially different without review.

7. Reporting evidence

A useful report should let someone who was not involved in outreach audit the result.

  • Live linking URL
  • Target URL
  • Anchor text
  • Publication or verification date
  • Link attribute where relevant
  • Placement/content title
  • Current status
  • Notes for exceptions or changes

Avoid reports that provide only a root domain and a metric.

Ask what happens after the report is sent.

  • Vendor defines what counts as a lost link.
  • Monitoring period, if any, is stated.
  • Replacement conditions are written.
  • The rule covers changed destinations or altered link attributes where relevant.
  • The agency knows what is not covered.

A replacement policy is only useful if its conditions are clear.

9. Client confidentiality and white label operation

If the vendor works behind your agency:

  • Client identity is handled as confidential information where agreed.
  • Vendor does not contact the client without permission.
  • Reports can be handed to the agency without vendor branding if that is the agreed model.
  • The agency controls the final client communication.
  • Access and files can be offboarded cleanly.

10. Commercial clarity

Do not evaluate link quality separately from contract clarity.

  • Unit being purchased is clear: outreach effort, accepted placement, live link, content, or another deliverable.
  • Scope limits are clear.
  • Additional content cost is clear.
  • Rejections are handled clearly.
  • Taxes, third-party fees, or publisher costs are disclosed as applicable.
  • No ranking guarantee is tied to payment.

Sample vendor questions

Use these in a procurement call:

  1. Walk us through one link from prospecting to live placement.
  2. Which opportunities do you automatically reject?
  3. How do you evaluate relevance beyond a domain metric?
  4. How are sponsored or paid relationships disclosed and qualified?
  5. Who controls anchor text and target URL?
  6. Can we review sample live placements from comparable industries?
  7. When can our agency reject a prospect?
  8. What happens if the final page changes after approval?
  9. What is your link-loss policy?
  10. What evidence appears in the final report?

A simple pass/fail decision

Do not create a complicated weighted score unless your procurement process truly needs one. Start with non-negotiables.

A vendor should fail review if it cannot explain acquisition methods, repeatedly proposes irrelevant sites, relies on tactics your agency considers unacceptable, hides commercial relationships, or cannot provide auditable live placement data.

Then compare the remaining vendors on fit, workflow, communication, scope, and price.

For the risk framework behind these checks, read how to outsource link building safely.

Research sources

Related reading