How to Use Semrush for Link Building in 2026: Step-by-Step Guide

You built 40 high-quality backlinks in 30 days using one tool. That tool was Semrush. Link building does not have to be a guessing game, and once you understand how Semrush structures its data, you will stop wasting time on prospects that will never link back to you.

This is exactly how I do it.

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What You Need Before Starting

Before you run a single report, get these in order:

A Semrush account. You need at least the Pro plan to access the full Backlink Analytics suite. You can start with a free trial at Semrush to see if the workflow fits before committing.

A list of 3 to 5 competitors. Not industry giants. Find sites ranking on page one for your target keywords with a domain authority close to yours. These are your real competitors.

A spreadsheet. Google Sheets works fine. You will track prospects, contact status, and follow-up dates here.

An outreach email account. Keep it separate from your main domain if you are sending volume. You want your primary domain reputation protected.

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Step-by-Step: How to Use Semrush for Link Building

Step 1: Run a Backlink Gap Analysis

Log into Semrush and go to Link Building from the left sidebar, then click Backlink Gap.

Enter your domain in the first field. Add two to four competitor domains in the remaining fields. Hit Find prospects.

Semrush will show you every domain linking to your competitors but not to you. These sites have already decided to link to content in your niche. That makes them warm prospects, not cold ones.

Step 2: Filter for Quality Prospects

Do not work with every result in that list. Sort by Authority Score and set a minimum of 30. Remove any sites with a spam score above 40%.

I also filter out forums, link directories, and low-traffic aggregators. Semrush shows traffic data right in the interface, so sorting by estimated monthly traffic above 1,000 visits weeds out the noise fast.

Step 3: Analyze Why They Linked to Your Competitors

Click on any prospect domain and look at the Indexed Pages report. Find the specific page that linked to your competitor.

This tells you what content earned the link. If they linked to a stats article, a listicle, or an in-depth guide, you now know what you need to create or already have on your site. Never pitch a link without knowing why they linked before.

Step 4: Identify Your Best Linkable Assets

Go to Backlink Analytics, enter your own domain, and click on Indexed Pages. Sort by backlinks descending.

Your top linked pages are your linkable assets. These are what you pitch. If your site is new and has no strong assets yet, this is the moment to build one. Tools like Jasper or Writesonic can help you produce research-backed content that attracts links faster than generic blog posts.

Step 5: Export and Build Your Prospect List

In the Backlink Gap report, select your filtered prospects and hit Export. Drop them into your spreadsheet.

Add columns for: prospect domain, linking page URL, your relevant page to pitch, contact email, outreach date, and follow-up date. Keep this simple. Overcomplicating your tracker kills momentum.

Step 6: Find Contact Information

Use the Bulk Outreach feature inside Semrush's Link Building Tool. Go to Link Building, click Start a new campaign, enter your domain and target keywords, and import your prospect list.

Semrush will crawl each domain and surface contact emails where available. For gaps, use Hunter.io or check the site's contact and about pages manually. This step is not glamorous, but it determines whether your campaign actually reaches anyone.

Step 7: Write and Send Personalized Outreach

Your outreach email needs to do three things: prove you read their content, offer clear value, and make the ask specific.

Mention the exact article they published that linked to your competitor. Explain why your page is a better or complementary resource. Ask directly if they would consider linking to it.

If you want to scale personalized outreach without spending four hours writing emails, Copy.ai handles variable-driven email copy well. I have used it to generate 50 personalized outreach variations in under an hour.

Step 8: Track Responses and Follow Up

Log every response in your spreadsheet immediately. Send one follow-up email 5 to 7 days after the first if you get no reply.

Two follow-ups total is my hard limit. Sending more damages your sender reputation and wastes time you could spend on new prospects.

Step 9: Monitor New Backlinks

Once links start coming in, track them in Semrush under Backlink Analytics. Set up Alerts under your project dashboard so you get notified of new or lost backlinks automatically.

A link going live is not the finish line. Links get removed. Monitoring weekly keeps you from losing ground you already earned.

Step 10: Optimize Your Linked Pages for Rankings

A backlink only converts to rankings if the page it points to is optimized. Run your linked pages through Surfer SEO to check content scores and close any on-page gaps.

I have seen pages jump from position 14 to position 6 within three weeks of pairing a new backlink with a Surfer content optimization. The combination works.

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Quick Reference Table

Step	Action	Time Needed
1	Run Backlink Gap Analysis in Semrush	10 minutes
2	Filter prospects by Authority Score and traffic	15 minutes
3	Analyze why competitors earned each link	20 minutes
4	Identify your top linkable assets	10 minutes
5	Export and build your prospect spreadsheet	15 minutes
6	Find contact emails via Semrush and manual search	30 minutes
7	Write and send personalized outreach emails	60 minutes
8	Log responses and schedule follow-ups	10 minutes
9	Monitor new and lost backlinks weekly	10 minutes
10	Optimize linked pages with Surfer SEO	30 minutes

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Common Mistakes to Avoid

Pitching every prospect in the export. Volume without quality is just spam. Work 20 well-researched prospects instead of blasting 200 generic emails.

Ignoring the anchor text data. Semrush shows you exactly what anchor text competitors are earning. If all your anchors are branded, you are leaving keyword relevance on the table.

Not verifying the linking page is indexed. Semrush can surface links from pages that got de-indexed after the report was generated. Always confirm the linking page still exists and is live before you pitch.

Skipping the follow-up. Most positive responses come from follow-up emails, not the first send. Skipping it is leaving links on the table.

Building links to pages with thin content. A backlink to a weak page rarely moves rankings. Fix the content first, then earn the link.

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Pro Tips

Use the Competitors report inside your Link Building campaign. Semrush automatically surfaces additional competitors based on your keywords. These often include sites you had not considered, and they can open up entirely new prospect pools.

Sort by "Best" in the Backlink Gap tool, not just by Authority Score. The Best filter identifies domains linking to multiple competitors but not you. Those sites are the highest-priority targets because they clearly have a habit of linking within your niche.

Create a "linkable asset calendar." After running Backlink Gap analysis, note what content types earned links for competitors across the board. Plan one new linkable asset per month based on that data. This gives your outreach a continuous stream of fresh angles.

Combine Semrush link data with content gap analysis. Find keywords where competitors rank but you do not, build content to close that gap, then immediately run link prospecting for that new page. You build the page and the links at the same time rather than playing catch-up later.

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Bottom Line

Semrush removes the guesswork from link building. The Backlink Gap tool alone is worth the subscription price if you use it correctly. The prospects are warm, the data is accurate, and the workflow is repeatable.

Start with Semrush, run your first Backlink Gap report today, and build your prospect list before you do anything else. Everything else in this guide flows from that first step.

Link building is slow when you are guessing. It gets faster when you have the right data in front of you.