Happenstance Features

Connect Gmail and Calendar, but read the Outlook gap first

The home page lists eight connected sources: Gmail, Google Calendar, Google Contacts, LinkedIn, X, Instagram, Outlook and Apple Contacts. The privacy policy names only Gmail, Calendar and Contacts data. It covers Gmail headers, not message bodies or attachments, and it says the Google connection is opt-in. ^{[1] [2] [3]}

Outlook is listed as a source, but the policy names it only as a sign-in provider and says nothing about what Outlook data is taken. LinkedIn comes in through a data export you upload. The home page describes a live connection, which the LinkedIn page does not. X, Instagram and Apple Contacts are listed on the site but not named in the policy. Connect only the sources whose data you can describe. ^{[1] [2] [4]}

Search returns paths to people, and an empty list may mean no upload

A search returns named people with mutual connections and a route to each. Find-more returns more people and leaves out those already shown. The MCP documentation says a search returns up to 30 results. A search takes 30 to 60 seconds by the company's own timing, so start it and do something else. ^{[5] [6] [8]}

Connection-based search returns nothing if you have not uploaded your connections. Check that the upload is loaded before you read an empty list as "no match." ^[7]

Web results are useful, but a result you can reach is worth more

Web search reaches public profiles beyond your connected network. The company labels results you can reach as warm and web results as cold. A cold result is a name and a profile, not a path, so you still have to find a way in. ^[9]

One Product Hunt commenter asked whether an old email makes someone searchable rather than warm. No company reply appears in the thread. Test it on a person you emailed years ago before you rely on it. ^[9]

Ranking follows your contact history, and the formula is not published

Contacts are ordered by how often and how recently you emailed or met them. The company does not publish the formula. A person you wrote to once five years ago will rank below a colleague you messaged last week, which is useful for warm intros and wrong if you want the oldest contact. ^[9]

Groups are the strongest free feature, with a privacy default to change

Groups are free, and members pool their connections into one searchable network. The company's largest groups make more than 380,000 people searchable. Visibility is limited to you, accepted friends and joined groups. A public profile shows named connections by default, so turn that off if you do not want your contacts visible. ^{[11] [10]}

Intro drafts save writing, but nobody receives them until a contact forwards them

Happenstance drafts intro requests. It does not send them. The mutual connection still has to forward the request, so the draft saves you writing time, not a step. ^{[7] [11]}

Interview prep is a claim to test on your next call

The job-seeker page says the product researches the people on your calendar and shows shared connections before each call. That is a company claim with no user report behind it. Run it before one call and check whether the shared connections are real. ^[12]

The iPhone app adds alerts, at a higher monthly price

The iPhone app searches by plain English and ranks results by affinity and mutual connections. It can save people to lists, draft an intro request, search Apple Contacts by role or company, and alert you when a new connection, a better route or a new person appears. Matching works best with US phone numbers. ^[13]

The app costs $29.99 a month or $289.99 a year, against $24 a month billed yearly on the web. The store page does not say whether the app syncs with your web account, so test a saved list on both before you rely on either one. ^{[14] [15]}

Sidedoor: do not plan around the pasted-job feature yet

Sidedoor is described in a July 2026 Show HN post by its builder as a tool that lets you paste any job and find who in your network can refer you. The builder says it was built at Happenstance and is free. The Sidedoor page describes Happenstance itself and does not confirm job-posting input, and the pricing page does not name Sidedoor. ^{[17] [16] [15]}

A reader comment on the same post asks what happens if your network is not on the app, and the thread has no reply. Until the company confirms the feature, treat it as unavailable. ^[18]