No. 36 on the indexMarketing & growthLaunched 2025Sep 2025
Daymaker
Researches a prospect, then sends them a gift, starting with cold-caking: cakes as sales outreach.
What it is
William Lindholm started Daymaker at 20 in September 2025 for company birthdays; its cold-caking service (now Cold Caked by Daymaker) took off on X. He and co-founder Simon Dieu raised over $100K from angels.
How it was built with AI
Gründerszene reports that Lindholm, who can't code, built it by vibe coding with Lovable and says he built the entire backend himself.
Traction
Self-reportedAlmost $100K invoiced in March 2026, up from $10K the month before, mostly for cakes, per the founder on X; $150K ARR within four months, by the company's own account
As of Mar 18, 2026. Stated by the founder or the tool maker. Not independently verified. Read the source
Stories featuring Daymaker
Sources
- 01Last month we invoiced $10k in cakes. This month we're invoicing almost $100kX (@daymakerguy) · Mar 18, 2026 · checked Oct 24, 2026
- 02Mit KI: 20-Jähriger baut 150.000-Dollar-Kuchen-Startup – ohne Coding-SkillsGründerszene (Business Insider Deutschland) · Apr 3, 2026 · checked Oct 24, 2026
- 03Daymaker: cold caking outreach near $100K a month, LovableShipped & Paid · checked Oct 24, 2026
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