AI Email Marketing Agent — Campaigns, Flows & Newsletters in Your Brand Voice

What the AI Email Marketing Agent does

The AI email marketing agent handles the full email marketing loop — campaign strategy, copy, subject lines, A/B testing, flow setup, and performance reporting — across Klaviyo, Customer.io, HubSpot, and Gmail. It's a senior email marketer as an agent, not a copy-only tool.

Every email is grounded in your brand voice, your list performance, and the segment you're sending to.

Campaign emails

• Plans the monthly email calendar based on list size, segment performance, and calendar events
• Writes campaign emails in your brand voice — product launches, promotions, content drops
• A/B subject lines and preview text tuned to your past open-rate winners
• Segment-aware copy — different angle for VIP customers, new subscribers, and re-engagement lists

Lifecycle flows

• Welcome flow (3–5 emails, segment-aware)
• Browse abandon, cart abandon, checkout abandon flows
• Post-purchase flow — thank you, review request, cross-sell
• Win-back flow for lapsed customers
• Subscription renewal and at-risk flows for SaaS

A/B testing built in

• Two subject lines per send, auto-split tested in Klaviyo
• Preview text paired with subject lines for full list-view optimization
• Winning variants reported back with open and click lift

Performance loop

• Pulls open rate, click rate, and revenue per email weekly
• Reports which subject line patterns, content angles, and offer types are winning
• Next campaign plan is informed by the last campaign's results

Why teams use this AI email marketing agent

E-commerce and DTC brands use it to run Klaviyo without a dedicated email marketer. Flows stay fresh, campaigns ship on schedule, and every email is tuned to what's performed on their list.

SaaS teams use it for lifecycle emails — onboarding, activation, upgrade, and renewal sequences — running in Customer.io or HubSpot.

Agencies use it to scale email marketing across multiple client accounts without scaling email marketer headcount linearly.

Newsletter operators use it for research-to-draft workflows — topic research, outline, draft, subject line tests — with the agent learning what subject line patterns drive opens on their specific list.

Founders use it as their email marketer — the agent writes, schedules, sends, and reports, so founders stay in creative direction mode instead of email-production mode.

How it works with Klaviyo and Customer.io

The agent connects directly to your ESP and builds campaigns and flows as drafts in the platform — ready to review and send. No copy-pasting from Google Docs, no re-formatting, no subject-line guessing.

It pulls 90 days of performance data on every run, so the copy and subject lines are grounded in what's actually worked on your list.

FAQ

Which email platforms does it support?

Klaviyo, Customer.io, HubSpot, and Gmail out of the box. Additional ESPs (Iterable, Braze, Mailchimp, Constant Contact, ActiveCampaign) are supported through Hyper's integration library.

Does it build flows too, or just campaigns?

Both. The agent writes and builds welcome flows, cart abandon flows, post-purchase flows, win-back flows, and lifecycle flows in your ESP — timed and segment-aware.

How does it handle subject lines?

Every campaign ships with two subject line variants and matching preview text, A/B split-tested in the ESP. The agent pulls your 90-day subject line performance to identify patterns that work on your list.

Can it handle segmented sends?

Yes. The agent reads your list segments in Klaviyo or Customer.io and writes segment-specific copy — different voice and offer for VIP, new subscribers, or re-engagement segments.

Does it send the emails itself or just draft them?

It drafts and builds them in the ESP. Final send is an approval step — you review the draft in Klaviyo or Customer.io and click send when you're ready.