Best Link Building Agencies: A Complete Review

Visibility is everything in the digital world. But even the most well-written content or SEO-optimized website can get lost in the enormous number of existing pages. Authority, credibility, and recognition! These are the key elements to boost rankings on search engines (like Google, for example). And one of the ways to do so is through backlinks.

Because if content is the voice of your brand, backlinks are its reputation. And you need them to be strong to make your brand visible. And that’s where link-building agencies come in.

The right agency doesn’t just give backlinks. It strategically places your brand across the Internet, connecting it to others and improving authority. But there are lots of agencies out there. And each claims to “improve rankings” and “boost domain authority.” But how to know which one actually gives results?

What to Look for in a Link Building Agency

The best agencies know that modern SEO is more about context quality, not just quantity. Google's algorithms have changed once again, and now prioritize topical relevance, editorial value, and genuine authority.

When choosing a partner, look for:

  • White-hat methods only. No PBNs and no spam. Sustainable SEO comes from real, natural backlink placements.

  • Transparent reporting. You should see what’s being done, where you got backlinks, and how they’re performing. Expect to get a weekly or monthly report from a reputable agency.

  • Social proof. Do they have relevant case studies? Can they give you a sample backlink? Do they offer a trial period? Review their previous work, or try them out yourself before making a commitment you can’t get out of.

  • How do they measure link-building success? You need to know how the platform measures results to be sure of its relevancy and accuracy.

  • How do they handle removed backlinks? Ask them what results do they promise and how long their links usually stay live. Or maybe your link gets removed. Will they fix it or compensate?

  • Niche expertise. A finance backlink strategy isn’t the same as one for SaaS or iGaming. Industry understanding matters. So, check this beforehand.

To save you the guesswork, we’ve reviewed some of the best link-building agencies in 2025.

So let’s break it down.

Top Link Building Agencies in 2025

1. SayNine: Your Smart and Scalable Link Building Partner

SayNine is at the top of our list, as it combines human expertise and automation perfectly. You can't think of it as just a modern link-building agency. It's a tech-enabled outreach partner that will provide authority links, which are contextually relevant and aligned with your content.

Why It Stands Out

  • No spammy backlinks. All SayNine’s backlinks are from SaaS and agency websites. You just share your target pages, and they handle the rest!

  • Saves your time. Time is money. And SayNine won’t spend yours. While their in-house team collects all the necessary data, manages link building outreach, and the backlinks, you can focus on other growth strategies.

  • Extremely reliable. You get consistent backlink batches every month. And in case you have questions or concerns, their team is available anytime to answer them.

  • Access to more than 3K partners worldwide. No need to create a network from scratch. SayNine’s team has already established the right connections and handles all the communication for you, ensuring your backlinks get delivered right on time.

  • Easy process. Nothing difficult is required of you. Your job is just to share target pages and anchors. Then you’ll receive a custom backlink spreadsheet, which is updated weekly.

Clear and timely reporting. After each batch, you’ll also get SEO reports to check the progress you've made.

Pricing: SayNine’s prices are completely transparent. You can start with a test run, for $150/link, then explore their available monthly and yearly plans.

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Key Services

SayNine doesn’t only focus on link-building. It offers other services, including:

  • Full SEO - All-in-one package that will help you get found, rank higher, and convert better.

  • SEO Audit - All your website will be checked (content, structure, technical issues, etc.), and all the sources of the problems will be revealed in a clear report, along with suggestions on how to fix them.

  • Content Writing - Your rankings can improve with relevant, SEO-optimized content written by SayNine’s experienced content writers.

  • Brand Mention - You send your URL with target keywords, and watch how your brand is spreading across the web and AI search results.

2. FatJoe

FatJoe is a well-known name in link-building and SEO services. It offers fully managed services, focusing on consistent quality and convenience.

Main Features

  • Flexible, scalable, and completely hands-off. The team builds backlinks only on sites they’ve personally conducted outreach to.

  • White-label strategies. Clients will never know who built the links, making it perfect for seamless reselling or outsourcing.

  • Strategic, natural link velocity. You get natural link pacing. That means mimicking genuine, organic mentions across the web, with seasonal adjustments during peak marketing periods.

  • Guaranteed quality and transparency. The company doesn't work with PBNs or spammy sites. And if something is wrong, they have a 100% money-back guarantee.

Pricing: Depending on the service you need, FatJoe offers you a particular price, starting with £60/14 days.

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3. uSERP

uSERP emphasizes earning editorial-grade backlinks. Instead of mass outreach, they secure placements on authoritative websites. It’s like you get free PR, not just backlinks.

Main Features

  • Premium and high-authority backlinks. You share the URLs, uSERP puts them in top-ranking publications.

  • Data-backed SEO and AI visibility strategies. uSERP discovers the exact things that are mentioned in AI overviews and LLMs. Then they place your links exactly there.

  • No work for you. Your site is checked out completely to uncover any gaps. And each link that is built has a clear purpose. It’s to fill those gaps.

  • Constant reviews. Each month, you’ll receive a review to see how the links have impacted your KPIs and business goals.

Pricing: Pricing plans start at $10,000/month, but those include so many features, you definitely won’t regret it.

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4. LinkBuilder.io

LinkBuilder.io doesn’t do shortcuts. The platform prefers manual outreach, which it believes increases quality and authority for long-term SEO growth.

Main Features

  • Insane strategy. Their custom process includes over 20 link-building strategies for any website.

  • Top-quality outreach. The acquired links are from websites and influencers targeted specifically for your niche and content.

  • Ethical, white-hat link acquisition. Outreach is completely manual, which complies with Google guidelines.

  • Finest results. You get strong links from authoritative websites. That will spike your SEO rankings in no time.

Pricing: Monthly packages start at $2,999/month, growing with your goals and needs.

5. Editorial.Link

Editorial.Link connects content strategy and SEO. What it means is that they directly integrate link building with your content lifecycle, so every placement is authoritative and visible in a long-term perspective.

Main Features

  • Editorial backlinks. Your links will appear on valuable, high-traffic content on authority pages, which’ll immediately boost your SEO.

  • Broken link building. Their approach is kind of unique. They find broken links on authoritative websites and replace them with yours.

  • No upfront fees. Before you have to pay, you get a report on the acquired links.

  • Personal account manager. You’ll get assigned a personal manager who oversees your project and is always ready to answer your questions.

Pricing: Pricing is available upon request, but you get a trial link first. If you’re satisfied, you can talk about the prices.

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Final Thoughts

All websites want to rank higher on search engines. It increases brand visibility and, well, authority. And link-building has become an important source of that. Still, just “buying links” won’t help you grow. You need the ones that are relevant to your niche (and that will get you into AI overviews).

Discovering the right links would’ve been a lot harder if link-building agencies didn’t exist. But they do. And they get the job done.

The ideal agency will feel like an extension of your own marketing team. They’ll improve your rankings and raise brand awareness with the sustainability and precision of an SEO expert. And the agencies on our list are the best in the matter, as they’ve proven to build links that actually last.