Short answer: Pitchbox is the most complete link building platform for agencies running outreach at scale. BuzzStream is the most popular relationship-based outreach CRM, and Respona adds AI personalisation and built-in prospecting. SEO Runway suits teams that want a simple link-building pipeline with outreach templates next to their backlink profile and rankings. For link analysis, see our backlink checker comparison.
Disclosure: SEO Runway is our product. We ranked it using the same criteria as every other tool, and noted where others do better.
Quick picks
- Most complete outreach platform: Pitchbox
- Best outreach CRM: BuzzStream
- Best AI personalisation: Respona
- Best pipeline inside an SEO platform: SEO Runway
- Best contact finder: Hunter
Link building tools compared
| Tool | Prospecting | Contact finder | Email sequences | Pipeline | Templates | From |
|---|---|---|---|---|---|---|
| Pitchbox | Yes | Yes | Yes | Yes | Yes | ~$165* |
| BuzzStream | Yes | Yes | Yes | Yes | Yes | ~$24* |
| Respona | Built-in search | Yes | Yes | Yes | AI | See site* |
| SEO Runway | From backlink data | No | [verify] | Yes | Outreach templates | $49 |
| Semrush Link Building Tool | Yes | Partial | Via Gmail/Outlook | Yes | Yes | ~$139* |
| Hunter | Domain search | Best-in-class | Campaigns | Partial | Yes | Free plan* |
| Ahrefs | Content Explorer, Link Intersect | No | No | No | No | ~$129* |
| Postaga | Yes | Yes | Yes | Yes | AI | See site* |
| Linkody | Partial | No | No | Monitoring | No | See site* |
| Majestic | Link data | No | No | No | No | ~$50* |
*Approximate; verify.
How we chose these tools
We compared each tool's published features, plans and documentation on seven criteria: prospect discovery, contact finding, email sequences, pipeline or CRM stages, templates, team use, and price.
1. Pitchbox: most complete outreach platform
Verdict: prospecting, personalisation, sequences and reporting at agency scale.
Pros: end to end; integrations with SEO data.
Cons: price; setup.
2. BuzzStream: best outreach CRM
Verdict: relationship tracking, contact research and email outreach in one CRM.
Pros: value; relationship history.
Cons: prospecting is lighter.
3. Respona: best AI personalisation
Verdict: combines prospect search, contact finding and AI-personalised outreach.
Pros: all in one; personalisation.
Cons: AI emails need review.
4. SEO Runway: best pipeline inside an SEO platform
Verdict: a link-building pipeline with outreach templates, next to your backlink profile (new, lost and anchor risk) and the rankings of the pages you're building links to.
Pricing: included with Core SEO from $49/month; 14-day free trial. See plans.
Pros: links and their impact in one place; tasks for the team.
Cons: no contact finder or advanced email sequencing, and a smaller link index for prospecting.
5. Semrush Link Building Tool: best for Semrush users
Verdict: prospects from competitor links, outreach via your inbox.
Pros: integrated.
Cons: less flexible than specialists.
6. Hunter: best contact finder
Verdict: finds and verifies email addresses by domain.
Pros: accuracy; free tier.
Cons: not a full link workflow.
7. Ahrefs: best for prospect research
Verdict: Content Explorer and Link Intersect surface great prospects.
Pros: data.
Cons: no outreach.
8. Postaga: best budget all-in-one
Verdict: outreach campaigns with AI for small teams.
Pros: price.
Cons: smaller ecosystem.
9. Linkody: best for tracking won links
Verdict: monitors links you've won.
Pros: simple.
Cons: not outreach.
10. Majestic: best for link quality checks
Verdict: topical Trust Flow to vet prospects.
Pros: quality signals.
Cons: no outreach.
An outreach workflow
- Pick a linkable asset: data, a tool, a guide or an expert quote.
- Find prospects: sites linking to similar content, resource pages and journalists.
- Qualify: relevance first, then authority and traffic.
- Find the right contact, an editor or author rather than info@.
- Personalise: one specific line about their work and why your piece helps their readers.
- Follow up once or twice, then stop.
- Track every prospect through the pipeline stages: found, contacted, replied, won, live.
Template examples
Resource page: "Hi [Name], your [page] is one of the clearest lists on [topic] I've found. We recently published [asset], which covers [gap]. It might be a useful addition for your readers. Either way, thanks for putting the list together."
Broken link: "Hi [Name], while reading [page] I noticed the link to [dead resource] no longer works. We have an up-to-date guide on the same topic at [URL] if you need a replacement."
Measuring link-building ROI
- Links won per month and the cost per link (tool cost plus time).
- Quality: relevance, authority and real traffic on the linking pages.
- Impact: ranking and traffic changes on the target pages over 2–6 months.
Related guides
Frequently asked questions
What tools do link builders use?
Usually a backlink index (Ahrefs, Semrush or Majestic), a contact finder (Hunter), and an outreach platform or CRM (Pitchbox, BuzzStream or Respona).
How many outreach emails get a link?
It varies widely with relevance and personalisation. Generic mass outreach performs poorly, while targeted, personalised outreach performs far better.
Is buying links safe?
No. Paid links that pass ranking credit break Google's spam policies and can lead to penalties.
The bottom line
- Agencies running outreach at scale: Pitchbox.
- Relationship-based outreach: BuzzStream.
- AI-assisted all-in-one: Respona.
- A simple pipeline next to your SEO data: SEO Runway.
Start a 14-day free trial of SEO Runway, or see the SEO workspace.
