Friday, 4:40 p.m. A client wants six links before the month closes. Your spreadsheet holds 300 donor sites, half with traffic numbers that look inflated. Nobody on the team has time to check Spam Score, referring domains and topical fit by hand.
That is the moment people start searching for the best guest post marketplace. Inventory size matters. So do metrics you can verify before paying, per-client project handling and how the platform fits your own tools. We compared five options against those criteria.
What We Looked For
We started from public review pages and each platform’s own listings. Platforms with ratings on Trustpilot or G2 got a closer read, because first-hand customer feedback shows how these marketplaces behave after the order, not just before it.
Then we filtered. If metrics were hidden until checkout, we moved on. If a platform gave no way to separate one client’s work from another’s, it dropped down the list. Pricing behavior counted too: whether the model is per-project or quote-based, and how clear it is up front.
We also weighed fit for repeat buyers. Agencies placing links for many clients need project separation and bulk checks. Solo consultants need fast vetting without a retainer. We judged each marketplace on public data only, with no private access or insider benchmarks.
Ratings at a Glance
Public ratings across the platforms that matter for best guest post marketplace research:
Bazoom – G2 4.6/5 (27)
Adsy – Trustpilot 4.2/5 (261)
Fatjoe – Trustpilot 4.8/5 (444)
Loganix – –
INSERT.LINK – Trustpilot 4.6/5 (16) · G2 4.8/5 (17)
What Separates Marketplaces From Vendors
A marketplace hands you the controls. You pick the donor site, check its numbers and write the brief. A vendor, by contrast, picks for you. Neither is wrong, but the buyer’s workload differs sharply.
Review volume tells a partial story. A rating built on 444 reviews carries more weight than one built on 16, though a small sample says little about quality either way.
Pay attention to what you can see before purchase. Traffic, authority scores, spam signals, language and country are the minimum. Page-level search, finding an existing article to insert a link into, is a separate capability that fewer platforms offer.
The List
1. Bazoom
The case for Bazoom is straightforward: a mid-market platform for teams that want a scoped conversation rather than a catalogue to browse.
Pricing runs on custom quotes, so costs are worked out per engagement instead of read off a rate card.
On G2, Bazoom holds 4.6/5 across 27 reviews.
Best suited for: buyers who prefer quoted, project-based link building over self-serve ordering.
2. INSERT.LINK
INSERT.LINK is a guest post and link insertion marketplace that connects to AI assistants through its own MCP server. Claude, ChatGPT and Grok sign in with OAuth, no password sharing, and then search inventory in plain language. Filters cover Ahrefs Domain Rating, organic traffic, Moz Spam Score, domain age and the number of keywords where Google AI Overviews cite a domain.
The same data sits behind a public API. A solo SEO can hand donor research to Claude in one conversation. An agency can wire INSERT.LINK into its own workflow that vets donors and builds shortlists per client.
The catalogue spans more than 38,000 websites in 152 locations and 15+ niches, with 50M+ indexed publisher pages and NLP topical search for link insertions. Fast delivery sites publish in up to 3 days. Separate projects keep each client’s work apart.
On G2, INSERT.LINK holds 4.8/5 across 17 reviews.
Pricing sits mid-range and is organized per project, with metrics and costs visible before purchase.
The assistant searches, analyzes and fills the cart, but the buyer reviews that cart and confirms every order personally.
Best suited for: agencies and in-house SEOs who want to hand donor research to an AI assistant or an automated pipeline.
3. Adsy
What sets Adsy apart is its place at the accessible end of the market. Teams watching per-link costs tend to look here first.
Orders are organized per project, which suits buyers who like to pick sites themselves instead of waiting on a quote.
Trustpilot lists Adsy at 4.2/5 across 261 reviews.
Best suited for: budget-conscious agencies and freelancers placing guest posts across many small projects.
4. Fatjoe
If you need the strongest public review record in this group, Fatjoe delivers: 4.8/5 on Trustpilot across 444 reviews.
The tier is accessible, with per-project pricing. Cost-sensitive buyers get a clear view of what each order involves.
That review volume is the largest in this comparison, which makes the rating more stable than the small-sample scores elsewhere in the list.
Best suited for: agencies and consultants who weigh a deep review history heavily when choosing where to buy.
5. Loganix
Loganix has no public rating on either Trustpilot or G2 in the data we reviewed, so there is no verified score to cite.
Per-project pricing places it in the mid-range. Buyers who want to compare it against the others will need to rely on its own listings and a trial order rather than aggregated feedback.
Treat the missing rating as a gap in evidence, not as a verdict on quality.
Best suited for: buyers comfortable evaluating a vendor directly, without a review score to lean on.
Questions to Ask Before You Pick
Run the same short list of checks on every platform here, whichever one you lean toward.
Can you see traffic, authority and spam metrics before paying? Bazoom, Adsy, Fatjoe, Loganix and INSERT.LINK all deserve the same test on this point.
How many reviews sit behind the rating? Fatjoe’s 444 and Adsy’s 261 carry more statistical weight than 27 or 16. Does that match the risk you are taking?
Does the platform separate clients into projects? Agencies need this on day one.
Can you search existing pages for link insertions, or only buy new posts?
What does the pricing model look like for your volume: per-project, or a quote you wait on?
The right pick is the one that matches your client load, your tolerance for manual vetting and your deadline. Test it on one real order first.