Venture Harbour

Marcus Taylor

Founder, Venture Harbour

Marcus is an Oxford-based serial entrepreneur

Marcus founded Venture Harbour in 2012, while only 21 years old, as a sandbox for building online ventures.

He's built a new company every year for 14 years following one rule – each must be more ambitious than the last. While six failed, two companies have been acquired, three still operate and three are in incubation.

Marcus has been featured in the Forbes 30 Under 30, and in 2022 he became the youngest Patron and Enterprise Fellow of the King's Trust in its 50-year history.

Marcus is currently building ventures in agentic AI and shares what he's learning here. You can contact Marcus here.

Media Appearances

Articles by Marcus · page 1 of 9

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Marketing Automation · Featured

5 Best Email Marketing Software to Integrate with Claude

Compare five email platforms for Claude, with our ActiveCampaign and Omnisend findings, pricing, and the jobs their connectors still leave unfinished.

Sept 2026 Read →
  1. 04
    Marketing Automation

    7 Best Marketing Automation Tools for 2026

    Compare 10,000+ marketer reviews of HubSpot, ActiveCampaign, Omnisend & more. Find the best marketing automation software for your needs.

    Sept 2026
  2. 05
    Marketing Automation

    ActiveCampaign vs HubSpot (2026): Which Should You Choose?

    I trialled HubSpot and ActiveCampaign for our Test Lab Programme. HubSpot's CRM was easier to manage, but automating lead emails exposed a steep upgrade.

    Sept 2026
  3. 06
    Marketing Automation

    6 Best Klaviyo Alternatives for eCommerce in 2026

    Six Klaviyo alternatives for different store needs, from Omnisend for eCommerce to ActiveCampaign for AI-assisted automation, with costs and limitations to consider.

    Sept 2026
  4. 07
    Marketing Automation

    10 Best CRMs with Marketing Automation in 2026

    We've sent 124,000 emails through ActiveCampaign, 640,000 through Brevo, and tested every other CRM in this guide with real customer lists. Here's what actually holds up.

    Sept 2026
  5. 08
    Marketing Automation

    ActiveCampaign vs Mailchimp (2026): I've Used Both for Years

    I've used ActiveCampaign across eight companies and retested Mailchimp in September 2026. ActiveCampaign is stronger for automation, while Mailchimp is easier for simple email.

    Sept 2026
  6. 09
    Marketing Automation

    Mailchimp Review: I tested it across 8 areas

    My Mailchimp review after eight hands-on tests covering its email builder, AI, automation, support, deliverability and pricing.

    Sept 2026
  7. 10
    Marketing Automation

    10 Best Mailchimp Alternatives in 2026 (Tested & Compared)

    I've tested every major Mailchimp alternative since 2014. Here are the 10 I'd actually switch to — and the one case where I'd stay put.

    Sept 2026
  8. 11
    Marketing Automation

    ActiveCampaign Review: Tested with 8 companies & 124K emails

    I've used ActiveCampaign for 14 years across 8 companies and 124,000 emails. It is strongest for automation and AI, with CRM and support caveats.

    Sept 2026
  9. 12
    Marketing Automation

    Constant Contact Review: I tested it across 8 areas

    My Constant Contact review after eight hands-on tests covering its email builder, AI, automation, support, deliverability, pricing and cancellation.

    Aug 2026