Sendonomics

Klaviyo Silver Master. $29M+ in client revenue. Seven years doing nothing but email and SMS.

You work with me. Only me.

Sendonomics is me, Callum. Not an agency with a sales team up front and a junior doing the work at the back. I'm the person on your first call, the person who builds your flows and writes your emails, and the person who replies when you message. I know your account, your numbers and your name, and you never have to chase me for an update.

What I fix

Most Klaviyo accounts run at a fraction of what they should. Flows set up once and never touched. Segments nobody has looked at in a year. Campaigns that go out on schedule and quietly lose money. I find the leaks, close them, and turn Klaviyo into a predictable revenue line.

What I do

• Full account management: strategy, campaigns, flows, SMS, WhatsApp, list growth and deliverability, handled end to end.

• Implementation and migration: moving you from Mailchimp, Omnisend or any legacy ESP into a Klaviyo account built properly from day one.

• Copy and design: I write every email and design it in Figma, so it looks and sounds like your brand.

• Deliverability rescues: domain authentication, list hygiene and engagement strategy. Diagnose, fix, hold the line.

• Strategy and consulting: expert input for in-house teams who want a specialist without hiring another vendor.

Recent results

• UK swimwear brand: £5.37M in email revenue, 38% of total store revenue

• UK apparel brand: migrated from Omnisend, £260K in 14 weeks, 44% of revenue by month three

• US pet gear brand: $760K from email and SMS, with back-in-stock SMS converting at 11.45%

• US supplement brand: 140 automated flows, email driving 35% of store revenue

Who I work with

Ecommerce brands doing $1M to $10M a year, usually on Shopify, who have outgrown DIY email but don't want another agency layer. Strong fits: apparel and beauty, food and beverage, supplements, subscriptions, pet and outdoor.

What good looks like

Klaviyo driving 25 to 40%+ of revenue. Predictable monthly numbers. Flows pulling their weight. Deliverability you don't have to think about. And one person who properly knows your business.

How to start

Book a 30-minute audit call with me. We'll walk through your account together and I'll show you where the easy revenue is, whether or not we end up working together.