Internal launch room

Cambridge is ready for the next live-wiring pass.

This page gathers the static proof needed before Buttondown referral attribution, Stripe booking, sponsor outreach or public launch. It is prep only: no subscriber email, public post, payment collection or prospect contact happens here.

OpenButtondown firstSubscribe route posts to Buttondown and carries hidden referral metadata; account and live attribution still need credentials/approval.OpenButtondown referrals4 metadata fields and 3 webhook events mapped for MY-2571.OpenLaunch conversion5 approval-gated reader-growth routes with CTA variants and measurement rules.OpenReferral controls5 reward levels with fraud controls documented in growth/referral-program.json.OpenSponsor booking3 static packages, manual-review booking intent and no live checkout links.OpenSponsor availability4 launch inventory windows with hold policy and proof gates.OpenSponsor close room5 manual steps from ranked lane to approved sponsor booking.OpenSponsor readiness4 approval gates before outreach, checkout or Buttondown placement.OpenCampus sprint5 ranked Biomedical Campus, Cambridge South and Science Park sponsor lanes.OpenAudience proof4 reader segments mapped to morning jobs, sponsor fit and proof rules.OpenSource depth56 source-registry entries across 16 categories.OpenEvents desk4 event lanes with source checks, inclusion rules and sponsor-safe angles.OpenUniversity desk4 university lanes covering term rhythm, student footfall and public-event source checks.OpenPlanning desk4 planning lanes covering applications, restrictions, growth towns and property-copy boundaries.OpenAffiliate catalogue113 Amazon UK tagged product searches grouped by local area and interest.OpenOutreach lanes8 ranked advertiser lanes ready for approved outreach.OpenOutreach copy4 approval-gated copy sequences with proof rules and no-send boundary.OpenTarget accounts10 named sponsor candidates with source URLs and proof gates.OpenAccount verification4 candidate passes and 5 proof fields before outreach approval.OpenProspect segments6 sponsor prospect segments with starter searches and proof rules.

Source coverage

Current registry mix for production issue checks.

Launch boundary

Do not contact prospects, reserve inventory, collect payment, imply live circulation or publish sponsor claims before the editor approves outreach.

Top sponsor lanes

Ranked for Cambridge spending power, morning usefulness, local fit and creative practicality.

Sponsor lane 1 - 4.6/5

Independent schools, colleges, tutoring and family services

Reach parents and commuters before school-run and workday decisions, with term, admissions, tutoring, camps or family-service offers.

Best package: Launch week sponsor

Proof needed: Clear age range, location and dates; Safeguarding-aware copy; No pressure-led education claims or unsupported results claims

Sponsor lane 2 - 4.6/5

Estate agents, premium lettings and relocation services

Cambridge-area movers, landlords, research workers and families need practical local context before viewing, selling or relocating.

Best package: Launch week sponsor

Proof needed: Active local listings, valuation route or relocation page; Named service area; No unsupported house-price or investment claims

Sponsor lane 3 - 4.2/5

Professional services around Cambridge station, science parks and business parks

Morning readers include founders, commuters and professional households who act on accountants, solicitors, recruiters, coworking and B2B offers.

Best package: Founding issue sponsor

Proof needed: Registered business identity; Clear landing page and contact route; Legal, financial or employment claims reviewed before use

Sponsor lane 4 - 4.0/5

Dentists, opticians, gyms, physios and private clinics

Appointment-led services fit the morning planning window, but health and fitness copy needs conservative claims handling.

Best package: Founding issue sponsor

Proof needed: Professional registration or clinic identity; Appointment or membership page; No clinical outcome, weight-loss or urgency claims without substantiation

Sponsor lane 5 - 4.6/5

Restaurants, cafes, theatres, museums and weekend venues

Friday, weekend and visitor-adjacent editions can turn local attention into bookings, tickets and referral rewards.

Best package: Referral reward sponsor

Proof needed: Live booking, ticket or voucher page; Date-specific availability; Prize or voucher terms if used as a referral reward

Next operator checks

Wire Buttondown account ID and referral metadata, add real source fetches for the daily issue, then request approval before any outreach, checkout, post or send.