Compare
Compared with the tools you’re weighing
Each of these does part of the job well. The tables show how much each one runs, who sets its limits and what it records about each change.
The same questions, asked of each
| Question | Shopify Campaign Autopilot | Klaviyo Composer | HubSpot’s marketing agents | Madgicx | Heraldic |
|---|---|---|---|---|---|
| What it runs | Meta, Microsoft and Snapchat ads, Shop Campaigns, Shopify email and product SEO, for Shopify stores | Email, SMS and push in Klaviyo; on ads, Meta results in Composer and audiences synced to four ad platforms | Campaign plans, content and nurture email in HubSpot; none of its listed agents runs paid ads | Meta ads only; its reports read other channels | Paid ads and lifecycle email, with an agent for each job |
| Who acts | Autopilot launches and funds ads on its own or after your approval; you approve every email tactic | Composer drafts and audits; you approve every send and every flow | Its marketing agents plan and draft for you to publish; the nurture agent personalizes sends once on | AI Marketer acts on its own or after your approval; rules you set run around the clock | Agents propose; for each kind of action, you choose whether it waits for you |
| Your limits | A monthly budget target it can overshoot (Shopify credits the difference on request), plus targets for return on ad spend, regions and languages | Your brand, voice and compliance guidance on every draft, and a person approves every send | Set email by email for the nurture agent: locked text, data sources, share of recipients, credit cap | Approval mode, if you choose it, and automated rules | Daily spend caps, a 20% limit on each change, and contact and content rules, checked before every change; no raise once the month’s cap is reached |
| Judged on | Reach, sessions, orders and sales for each tactic | Conversions Klaviyo credits to its messages (last touch, by default) | Attributed revenue, ROI and deal influence in your CRM | Your Meta ad data, made more complete by its tracking | Your conversion events, each valued by what it’s worth to you |
| The record | A timeline of actions for each tactic | Citations and its reasoning as it works; Klaviyo’s activity log records changes | Previews show why it changed the text; sent versions viewable for 30 days | Latest changes to each ad set, and details for each recommendation | Every action, with who proposed it, why, the checks it passed and who approved it |
| Creative | Ads from your catalog images; it writes and styles its own emails | Drafts emails, SMS, flows and segments | Drafts content, emails and ad copy | Generates image ads | Images and copy drafted from your approved library; none runs until it’s approved |
| What it costs | Free on paid Shopify plans except Agentic; the ad platforms bill ad spend, and Shopify bills Shop Campaigns and email sends. | Usage-based: every account gets $5 of Composer use a month free; a $20 monthly plan includes four times that. | HubSpot Credits, $10 per 1,000; Marketing Studio needs Marketing Hub Pro or Enterprise. | A single plan, priced by ad spend, from $45 a month; its tracking add-on is $49 a month; 7-day free trial. | Not set yet. Ad spend goes straight to the ad platforms |
What it runs
Heraldic: Paid ads and lifecycle email, with an agent for each job
- Shopify
- Meta, Microsoft and Snapchat ads, Shop Campaigns, Shopify email and product SEO, for Shopify stores
- Klaviyo
- Email, SMS and push in Klaviyo; on ads, Meta results in Composer and audiences synced to four ad platforms
- HubSpot
- Campaign plans, content and nurture email in HubSpot; none of its listed agents runs paid ads
- Madgicx
- Meta ads only; its reports read other channels
Who acts
Heraldic: Agents propose; for each kind of action, you choose whether it waits for you
- Shopify
- Autopilot launches and funds ads on its own or after your approval; you approve every email tactic
- Klaviyo
- Composer drafts and audits; you approve every send and every flow
- HubSpot
- Its marketing agents plan and draft for you to publish; the nurture agent personalizes sends once on
- Madgicx
- AI Marketer acts on its own or after your approval; rules you set run around the clock
Your limits
Heraldic: Daily spend caps, a 20% limit on each change, and contact and content rules, checked before every change; no raise once the month’s cap is reached
- Shopify
- A monthly budget target it can overshoot (Shopify credits the difference on request), plus targets for return on ad spend, regions and languages
- Klaviyo
- Your brand, voice and compliance guidance on every draft, and a person approves every send
- HubSpot
- Set email by email for the nurture agent: locked text, data sources, share of recipients, credit cap
- Madgicx
- Approval mode, if you choose it, and automated rules
Judged on
Heraldic: Your conversion events, each valued by what it’s worth to you
- Shopify
- Reach, sessions, orders and sales for each tactic
- Klaviyo
- Conversions Klaviyo credits to its messages (last touch, by default)
- HubSpot
- Attributed revenue, ROI and deal influence in your CRM
- Madgicx
- Your Meta ad data, made more complete by its tracking
The record
Heraldic: Every action, with who proposed it, why, the checks it passed and who approved it
- Shopify
- A timeline of actions for each tactic
- Klaviyo
- Citations and its reasoning as it works; Klaviyo’s activity log records changes
- HubSpot
- Previews show why it changed the text; sent versions viewable for 30 days
- Madgicx
- Latest changes to each ad set, and details for each recommendation
Creative
Heraldic: Images and copy drafted from your approved library; none runs until it’s approved
- Shopify
- Ads from your catalog images; it writes and styles its own emails
- Klaviyo
- Drafts emails, SMS, flows and segments
- HubSpot
- Drafts content, emails and ad copy
- Madgicx
- Generates image ads
What it costs
Heraldic: Not set yet. Ad spend goes straight to the ad platforms
- Shopify
- Free on paid Shopify plans except Agentic; the ad platforms bill ad spend, and Shopify bills Shop Campaigns and email sends.
- Klaviyo
- Usage-based: every account gets $5 of Composer use a month free; a $20 monthly plan includes four times that.
- HubSpot
- HubSpot Credits, $10 per 1,000; Marketing Studio needs Marketing Hub Pro or Enterprise.
- Madgicx
- A single plan, priced by ad spend, from $45 a month; its tracking add-on is $49 a month; 7-day free trial.
From each product’s own pages, checked November 1, 2026. Each comparison lists its sources.
Where each one is strong, and where it stops
- Shopify Campaign AutopilotShopify’s free AI for ads and email, built into the store admin.Costs: free; you pay for ads and sends
- Klaviyo ComposerKlaviyo’s marketing agent: drafts and audits email and SMS.Costs: priced by usage
- HubSpot’s marketing agentsHubSpot’s agents plan and draft campaigns inside your CRM.Costs: Marketing Hub Pro or Enterprise, plus credits
- MadgicxAn AI media buyer for Meta ads, built for e-commerce.Costs: from $45 a month
Running it without another product
- The ad platforms’ AIThe ad platforms’ own AI campaigns: strong inside their own platform.Costs: no fee beyond ad spend
- An agency or freelancerExperienced people, on a retainer and a regular call.Costs: a retainer, a share of spend, or hours
- A chatbot on your accountsA general AI assistant connected to your ad accounts.Costs: a subscription, plus your time
- Doing it yourselfYou, the platforms, and whatever time is left.Costs: your time, every day
Check the arithmetic yourself.
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