Link Building for Bootstrapped SaaS: 8 Tactics That Don't Cost Money

Why Links Still Matter

Despite everything Google has said about content quality, backlinks remain the #1 ranking factor for competitive keywords in 2026.

Getting links without money requires either great content, relationships, or tactics that exploit structural opportunities. This guide covers all three.

Tactic 1: The Expert Roundup

What it is: Interview 10–20 experts in your niche with one question. Publish their answers. Everyone you interview shares the post.

How to execute:

• Find 20 people in your space with 1,000+ Twitter followers or active LinkedIn presence
• Email each with:

Subject: Quick contribution for [Your Product] expert roundup?

Hi [Name],

I'm compiling expert opinions on "[one specific question]" for a piece on [your site].

Takes about 2 minutes to answer. Everyone contributing gets featured with a link to their site.

Would you be willing to share your perspective?

[Your name]

• Publish the roundup with everyone's name, photo, and website link
• Email each participant: "It's live — here's the link"
• Most will share on social media, many will link from their sites

Expected results: 5–15 backlinks from relevant sites per roundup

Tactic 2: Broken Link Building

What it is: Find broken links on pages in your niche. Offer your content as a replacement.

How to find broken links:

• Install the "Check My Links" Chrome extension
• Go to any "resources" or "tools" page in your niche
• The extension highlights broken links in red
• Email the site owner:

Subject: Broken link on your [page name] page

Hi [Name],

I noticed a broken link on your [page] page — specifically the link to [what it was].

I have a piece that covers [similar topic] that might be a suitable replacement: [your URL]

Either way, thought you'd want to know about the broken link.

[Your name]

Conversion rate: 5–15% of broken link emails result in a replacement link

Tactic 3: The HARO/Connectively Strategy

HARO (Help a Reporter Out, now called Connectively) connects journalists with expert sources. When a journalist includes your quote in their article, you get a link from their publication.

How to use it effectively:

• Subscribe at connectively.us (free)
• Set up alerts for your niche keywords
• Respond to relevant queries within 2 hours (speed is critical)
• Keep responses under 200 words
• Be specific and quotable — journalists skip vague answers

Expected results: 2–5 links/month from media sites with consistent effort

Tactic 4: Skyscraper Content

What it is: Find the most-linked content on a topic. Create something demonstrably better. Reach out to everyone who links to the inferior version.

Steps:

• Find highly-linked content in your niche (use Ahrefs free tier or Semrush)
• Analyse what made it link-worthy
• Create a more comprehensive, more up-to-date, better-formatted version
• Find everyone linking to the old version
• Email them:

Hi [Name],

I noticed you linked to [old content URL] on your [page].

I recently published what I think is a more comprehensive version 
covering [additional topics not in original]: [your URL]

Might be worth updating your link — it covers everything the original 
does plus [specific additions].

[Your name]

Tactic 5: Build Free Tools That Attract Links

A free tool related to your product's core function is one of the best link magnets in SaaS.

Examples:

• A website speed tester that links to your performance product
• A pricing calculator for a financial product
• A readability scorer for a writing tool
• An SEO checker for an SEO product

Free tools get linked because they're genuinely useful and because people reference them in guides and tutorials.

The build time: Most simple tools take 2–4 hours to build with a modern stack. The links they generate can last for years.

Tactic 6: Turn Mentions Into Links (Reverse Link Building)

Find every mention of your brand or product online that doesn't have a link. Ask for one.

Finding unlinked mentions:

• Google Alerts for your brand name
• Mention.com (free tier)
• Ahrefs → "unlinked mentions" report

The email:

Hi [Name],

I noticed you mentioned [Brand] in your article "[Title]" — thanks for that!

One small request: would you be able to link [Brand] to our site? 
It helps readers who want to find us directly.

[URL]

Thanks!

Conversion rate: 20–40% (they already know and like your product)

The Link Building Tracking Sheet

Keep a simple spreadsheet:

Track everything. Link building is a volume game — expect 5–20% conversion on outreach.