Guides

Link Building Outreach: How to Earn Links by Email Without Breaking Google's Rules or Spam Law

Link building outreach is the work of contacting the editors, writers and site owners who already publish on your topic, usually by a one-to-one email, and offering them something their readers need, so that any link they add is an editorial choice rather than a purchase. It is the part of off-page SEO where a person asks for the link. Google uses links as a signal of relevance and as a route to new pages, and AI chats such as ChatGPT, Claude, Gemini and Perplexity read the same third-party pages when they write an answer. The sections below set out what outreach is, which links Google counts and which break its rules, what earns a link in 2026, how to find prospects, how to write an email editors answer, which email rules apply, how to measure the work, how links and mentions reach AI answers, and which outreach advice has dated.

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Originally published 20 February 2024 in the link building section of aemorph.com. Updated October 2026.


Link building outreach is a direct, personal request to a named publisher about a page they have already published, explaining why a resource, fact or correction from your site improves that page for their readers. Google states that it uses links as a signal when it judges the relevance of pages and as a way to find new pages to crawl. Outreach puts your best page in front of the people who decide whether to link to it. Aemorph builds links as one part of the LLM Influencer System, alongside technical, on-page and content work, never as the only lever.

Outreach typeWhat you offerWhy the editor linksRisk under Google's policiesBest fit
Resource outreachA guide, dataset or tool that covers the topic better than the page they link to nowTheir readers get a stronger referenceLow, when no payment or swap is attachedPages that already list resources
Broken link outreachA working replacement for a dead link on their pageThey fix a broken experience for their readersLowOlder articles with outbound links
Unlinked mentionA request to link a mention of your business that already existsThe mention becomes easier for readers to followLowPress coverage and reviews
Expert sourceA quote, figure or comment for an article in progressThe writer gets a sourced lineLowJournalists and trade writers
Guest contributionAn article written for their audienceThey gain content their readers valueModerate: Google names guest posts with optimised anchor text as link spamPublications that accept contributors
Link swap or paid placementA reciprocal link or moneyA transaction, not an editorial choiceHigh, unless a paid link carries rel="sponsored" or rel="nofollow"None, for ranking purposes

Outreach types compared against Google Search Central's spam policies and link best practices, October 2026.

Link building outreach is not email marketing: an outreach email goes to one named editor about one published page, while email marketing sends campaigns to a list of subscribers. Aemorph does link building outreach as part of its SEO work and does not run email marketing, newsletters or subscriber campaigns for clients. The distinction matters for the law as well as for the reply rate, because spam rules in many countries apply to any commercial message, one-to-one or not, which the email rules section below covers.

Sources: Google Search Central, December 2025 and others

Google defines link spam as creating links to or from a site primarily to manipulate search rankings, and its spam policies list buying or selling links, excessive link exchanges, automated link building and optimised anchor text in guest posts or press releases as examples. Buying and selling links is also a normal part of advertising, and Google states that a paid link stays within policy when it carries rel="sponsored" or rel="nofollow". The test for any outreach request is whether the editor adds the link with no money, swap or favour involved.

PracticeGoogle's positionPolicySafe alternativeStatus in 2026
Paying for a link that passes ranking creditLink spamSpam policies, link spamPay for the placement and ask the publisher to mark the link rel="sponsored"Against policy
"Link to me and I'll link to you" exchanges at scaleLink spam when excessiveSpam policies, link spamLink out only where it helps your own readersAgainst policy
Guest posts with keyword-rich anchor linksLink spamSpam policies, link spamWrite for the audience, accept the publisher's anchor text, or a nofollow linkAgainst policy
Links a contract or terms of service require without letting the publisher qualify themLink spamSpam policies, link spamLet the publisher mark the link rel="sponsored" or nofollow, or offer a credit without a link conditionAgainst policy
Third-party pages published on a strong host mainly for its ranking signalsSite reputation policySpam policies, site reputationPublish on hosts whose editors oversee the contentAgainst policy
An editor links to your resource on their own judgementA normal editorial linkLink best practicesNothing to changeWithin policy

Google Search Central, spam policies (last updated 28 August 2026) and qualify outbound links (last updated 10 December 2025).

Google introduced rel="sponsored" and rel="ugc" in September 2019, beside rel="nofollow". It treats all three as hints about which links to consider or exclude within Search, and since 1 March 2020 nofollow is also a hint for crawling and indexing. A publisher that marks your link sponsored is following Google's own instruction, and the link still sends readers and still names your business.

What does the site reputation policy mean for paid guest posts?

Google's site reputation policy covers third-party content published on a host site mainly because of the host's established ranking signals, so a paid article placed on a strong domain purely to borrow its authority breaks the policy even when the host is a reputable publication. Google's human reviewers look at whether the host provides enough input, editorial oversight or contribution for the content to be fully part of the site. Earlier versions of the policy were called site reputation abuse; the current page calls it the site reputation policy.

Sources: Google Search Central, August 2026 and others

A link is earned when your page gives a publisher's readers something the publisher does not have: original data, a clear definition, a working tool, a sourced expert view or a replacement for a dead link. Google's link best practices ask for anchor text that is descriptive, concise and relevant to both pages, and warn against cramming keywords into it. Outreach therefore starts with the asset, not the email. A strong asset makes the request short, because the editor sees the value in one line. Aemorph's guide to SEO copywriting covers writing page copy that ranks in Google and persuades the reader.

AssetWhy editors link to itEffort to buildTypical publisherHow to judge it
Original data or survey resultsA figure they cite gives their article authorityHighNews, trade and research publicationsReferring domains to the data page
A definitive guide to a narrow questionIt answers a question their readers ask, better than the current linkMediumBlogs and resource pages in your topicLinks from pages on the same topic
A free tool or calculatorTheir readers use it repeatedlyHighResource lists and how-to articlesLinks plus repeat visits
Expert commentA named, qualified source strengthens their pieceLowJournalists and trade writersMentions with and without links
A fix for a broken linkTheir page works againLowOlder articles with dead outbound linksLinks won per email sent

Assets that earn links, Aemorph's practice, October 2026.

Aemorph's off-page SEO guide sets out ten tactics, from digital PR to directory listings, and the anchor text guide explains how anchor wording affects a link. This guide covers the outreach that sits behind most of those tactics.

Sources: Google Search Central, December 2025 and others

How Do You Find the Right Prospects?

The right prospects are pages that already cover your topic, already link out to resources like yours and are written by people who publish a contact address for editorial requests. Relevance decides whether a link helps readers, and Google's link spam examples include low-quality directory or bookmark site links. A short list of relevant pages beats a long list of any site with a high authority score.

  1. List the pages that rank for your topic. Search the questions your asset answers and note the articles and resource pages that appear.
  2. Run a backlink gap check. In Ahrefs, list the sites that link to two or more competitors but not to you; those publishers already link to work like yours.
  3. Find broken links on relevant pages. Ahrefs and similar tools report outbound links that return a 404, each one an opening for a replacement. Aemorph's guide to 404 errors sets out which status code or redirect each missing page needs.
  4. Find unlinked mentions. Search for your business name on news and trade sites and note the mentions without a link.
  5. Find the editorial contact. Use the address the publisher lists for contributions, corrections or editorial enquiries on its own site.
  6. Record why each page fits. One line per prospect on what your asset adds to that page is the first sentence of the email.
Prospect sourceWhat it findsToolFit signalWatch out for
Competitor backlink gapSites linking to two or more competitorsAhrefs Link IntersectThey already link to work on your topicSites that sell links
Broken outbound linksDead links on relevant pagesAhrefs Broken links reportA clear replacement exists on your sitePages no longer maintained
Unlinked brand mentionsCoverage that names you without a linkGoogle search, Ahrefs Content ExplorerThe writer already chose to mention youMentions in syndicated copies
Resource pagesLists of recommended guides and toolsGoogle searchThe page exists to link outPages built only to sell placements
Journalist requestsWriters asking for expert sourcesPublisher contact pages and newsroomsA named article in progressRequests that ask for payment

Prospecting methods, Aemorph's practice, October 2026.

Contact details come from the publisher's own site, one at a time. Software that collects email addresses in bulk is treated as address harvesting by spam laws such as Australia's Spam Act 2003, and Singapore's Spam Control Act 2007 defines address-harvesting software for the same reason.

Sources: ACMA, March 2019 and others

How Do You Write an Outreach Email Editors Answer?

An outreach email editors answer names their page, states in one sentence what your resource adds for their readers, identifies who you are and asks once, with no demand for anchor text and no hidden payment. Editors receive many requests, so the email that reads like a note from a colleague in their field gets the reply, and each email is written for one person and one page.

  1. Write an honest subject line. Name the page or the topic, never "Re:" on a first email, and never a promise the email does not keep.
  2. Open with their page. Quote the article title and the section your resource fits.
  3. State the value in one sentence. Say what your page adds: a newer figure, a working tool, a fixed link.
  4. Identify yourself. Give your name, role, business and a way to reach you.
  5. Leave the anchor text to them. A request for a keyword-rich anchor describes the link spam example in Google's policies.
  6. Disclose any payment. If a placement is paid, say so and ask for rel="sponsored".
  7. Offer a way out. Tell the editor how to ask you not to write again, and honour it.
  8. Follow up once. One polite reminder after a week is enough; silence after that is an answer.
Email elementWeak versionStrong versionWhy it worksRule it meets
Subject line"Re: collaboration opportunity""A 2026 update for your guide to commercial leases"Honest and specificGmail sender guidelines on accurate subjects
Opening"I love your blog!""Your guide links to a 2019 rent survey in the third section."Shows you read the pageRelevance
The ask"Please add a link with the anchor 'best lease lawyer'""Our 2026 survey of 400 leases is here if it helps your readers."Leaves the editorial choice with the editorGoogle link spam policy
IdentityA first name and a free webmail addressFull name, role, business and websiteThe recipient knows who is writingAustralia's Spam Act identification rule
Opt-outNone"Reply 'no thanks' and I won't write again."Gives the recipient controlSpam Act and Spam Control Act unsubscribe rules

Outreach email elements, Aemorph's practice and the rules cited, October 2026.

Sources: Google Search Central, August 2026 and others

Which Email Rules Apply to Outreach?

Two sets of rules apply to every outreach email: the technical requirements of the mailbox providers that deliver it, and the spam laws of the countries where the sender and recipient sit, which in many places treat a message promoting a business as commercial even when it goes to one person. Gmail has required every sender to its personal accounts to authenticate with SPF or DKIM since 1 February 2024, and sets stricter rules for anyone sending more than 5,000 messages a day. National laws differ on consent and reach messages through links on the sender's side as well as the recipient's, so each campaign checks the rules of both countries before the first email.

Rule setWho it applies toMain requirementsUnsubscribe timingSource
Gmail sender guidelines, all sendersAnyone sending to Gmail personal accountsSPF or DKIM, valid reverse DNS, TLS, spam rate below 0.3%Easy unsubscribe for marketing messagesGmail Help
Gmail sender guidelines, bulk sendersMore than 5,000 messages a day to GmailSPF, DKIM and DMARC, aligned From domain, one-click unsubscribeOne-click unsubscribe for marketing and subscribed messagesGmail Help
National spam lawsCommercial messages linked to the country through the sender or the recipientConsent basis, sender identification and an unsubscribe route, which differ by countrySet by each lawThe national regulator
Country rules in depthAustralian and Singapore outreachEach country's consent, bulk and labelling rulesCovered country by countryAemorph's Australian and Singapore editions of this guide

Email rules compared, October 2026. General guidance, not legal advice.

Does one outreach email count as spam?

Whether one outreach email counts as spam depends on the law that reaches it: some countries treat a single email promoting a business as a commercial message that needs consent, while others regulate unsolicited messages only once similar messages go out in bulk. Aemorph's reading is that an editor's published address for contributions, used for a request about their own page, is the strongest consent basis outreach has, and a scraped list never is. The Australian and Singapore editions of this guide set out each country's thresholds and duties. Aemorph's Australian Spam Act guide and Singapore PDPA and Do Not Call guide cover each country in depth.

General guidance, not legal advice.

Sources: Gmail Help, October 2026 and others

Outreach is measured in three layers: the emails (replies and links won), the links themselves (referring domains and the pages that gained them) and the result (rankings, traffic and AI visibility for the pages that received links). Aemorph tracks rankings, traffic and visibility, and reports by topic cluster each month, because those are the outcomes outreach exists to move. Sales and leads follow from that visibility, and Aemorph does not collect a client's revenue figures.

MeasureToolWhat it showsHow to read itFrequency
Reply rateYour email client or outreach logShare of emails that got any replyA low rate points to weak relevance or a weak assetPer campaign
Links wonOutreach log, checked on the live pageLinks placed per email sentConfirms the editorial yes became a live linkPer campaign
Referring domainsAhrefsNew sites linking to your domain and to each pageGrowth on the pages you promotedMonthly
Rankings and clicks for linked pagesSearch Console and AhrefsPosition and clicks for the page that gained linksMovement after links go liveMonthly
Spam rateGoogle Postmaster ToolsShare of your mail Gmail users mark as spamKeep it below 0.1% and never reach 0.3%Weekly during a campaign

Outreach measures, Aemorph's reporting practice and Gmail Help, October 2026.

Sources: Gmail Help, October 2026 and others

Links reach AI answers in two ways: they help search crawlers find and weigh your pages, and the pages that link to or mention you are themselves read by the AI chats that write answers about your industry. Google states that links help it find new pages and judge relevance, and AI Overviews and AI Mode draw on the same index. AI chats run their own search crawlers: OpenAI's OAI-SearchBot surfaces sites in ChatGPT search, Anthropic's Claude-SearchBot improves Claude's search results and PerplexityBot surfaces and links sites in Perplexity. Aemorph's guide to how search engines work explains how Google crawls, renders, indexes and ranks pages.

GEO, Generative Engine Optimisation, is Aemorph's focus: earning citations and mentions for your business inside ChatGPT, Claude, Gemini and Perplexity. Aemorph's view is that a mention on a trusted third-party page, linked or not, carries your name and your facts into the sources those chats read, so outreach that wins a sentence about your business is GEO work as well as SEO work. The GEO guide covers the chats, and the AEO guide covers Google's answer surfaces.

SignalSearch enginesAI chatsWhat outreach addsDiscipline
Editorial linkA relevance signal and a crawl pathA path for the chat's search crawler to your pageA new link from a relevant pageSEO and GEO
Unlinked brand mentionContext about your business on a third-party pageText about your business that the chat readsYour name in a trusted sourceGEO
Accurate facts on third-party pagesConsistent information about the businessFewer conflicting statements for the model to repeatCorrections to outdated mentionsGEO
Sponsored link with rel="sponsored"No ranking credit passedStill readable text about your businessDisclosed reach on a relevant siteGEO
Link from a low-quality siteIgnored or treated as spamLittle value as a sourceNothing worth the riskNone

How links and mentions reach search and AI answers, from Google, OpenAI, Anthropic and Perplexity documentation and Aemorph's practice, October 2026.

Sources: Google Search Central, December 2025 and others

Which Outreach Advice Is Out of Date?

Several outreach tips still repeated online, including tips in the earlier version of this guide, treat outreach as email marketing, treat cold email as legal everywhere, or recommend bulk tools and contact-scraping that spam laws prohibit. Each one is checked below.

Earlier adviceWhat the rules or documentation saySourceWhat to do insteadStatus
"Email outreach is email marketing"Outreach is a one-to-one request to a publisher; email marketing sends campaigns to subscribersAemorph's service definitionsTreat outreach as part of link buildingCorrected
Cold emailing is legal even when it is unsolicitedAustralia's Spam Act requires consent for commercial messages; Singapore's Spam Control Act sets rules for unsolicited bulk messagesACMA; Singapore Statutes OnlineCheck the sender's and recipient's countries and the consent basis firstCorrected
Use bulk email senders and mass emailing softwareGmail sets stricter requirements above 5,000 messages a day, and outreach at that scale stops being one-to-oneGmail HelpSend individually written emails in small batchesCorrected
Find contact details with search operators, LinkedIn and TwitterSpam laws such as Australia's Spam Act restrict address-harvesting software and harvested address listsACMAUse the editorial contact the publisher lists on its own siteCorrected
"Backlink gap analysis identifies which pages on your website are not receiving any backlinks"A backlink gap lists sites that link to competitors but not to youAhrefs Link IntersectRun the gap against two or more competitorsCorrected
Guest posting on others' blogs as a link building routeGoogle names guest posts with optimised anchor text as link spamGoogle Search CentralContribute for the audience and leave anchors to the editorCorrected
Use outreach to generate sales leadsSales prospecting is a separate activity with its own consent rulesACMAKeep link outreach to publishers about their pagesRemoved

Advice from the 2024 version of this guide, checked against current rules and documentation in October 2026.

Sources: Google Search Central, August 2026 and others

Outreach that offers a publisher's readers a better resource, asks one named editor at a time, leaves the anchor text to them, discloses any payment and respects each country's spam rules earns links that pass Google's policies and mentions that AI chats read. Aemorph's SEO work includes link building as one part of the LLM Influencer System, where GEO carries the same facts into ChatGPT, Claude, Gemini and Perplexity. The SEO checklist places outreach in its links stage. The result below comes from the same team and SEO discipline the entity-first method grew from:

Case study · Education, Singapore

Linda Mandarin grew organic traffic 277% in 10 months.

Monthly organic visits rose from 860 to 3,238, an annualised 391%, and top-three keyword rankings grew from 24 to 70 terms. Read the Linda Mandarin case study

Organic search results, not AI citations. Source: Ahrefs, August 2026 How results are measured

This guide sets out Aemorph's reading of the rules it mentions, current at October 2026. It is general information, not legal advice; confirm how a rule applies to your business with a qualified adviser.

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