# Cowliss next to the platforms you know

Compare Cowliss against Klaviyo, Mailchimp, Customer.io, Brevo and Resend on monthly pricing, multi-product setup and developer workflow.

## Monthly price, one product

Assumption per contact a month: 4 emails, 10 events and 1 automation run. Cowliss is the cheaper of Free and Plus at that usage, fee included, with included usage deducted first.

| Platform | Plan | 1,000 contacts | 10,000 contacts | 50,000 contacts |
| --- | --- | --- | --- | --- |
| Cowliss | Free or Plus | $3.30 (Free) | $32.99 (Plus) | $184.99 (Plus) |
| Klaviyo | Email | $30 | $150 | $720 |
| Mailchimp | Standard | $45 | $135 | $450 |
| Customer.io | Essentials | $100 | $145 | $505.00 |
| Brevo | Business | $18 | $75 | Quote |
| Resend | Pro marketing | $0 | $80 | $250 |

Prices are public monthly list prices recorded on the dates shown above. Each competitor plan was selected as the cheapest tier that includes multi-step automations. The Cowliss figure is an estimate calculated from the monthly usage assumption shown, with included plan usage deducted first. The vendor's pricing page is the source of truth.

## Cowliss vs Klaviyo

Billed on active profiles, including checkout contacts who never opted in. One store per account, so each product is its own account and bill. List price on Email, checked 2026-10-04 at https://www.klaviyo.com/pricing.

|  | Cowliss | Klaviyo |
| --- | --- | --- |
| Adding a second product | A prompt to your agent, then cow push | Lists, flows and tracking rebuilt by hand per store |
| What you pay for | Events, emails and automation runs only | Active profiles and sends |
| Automations as JSON files in your repo | Yes | No |
| Unsubscribed or dormant contacts | Free, contacts are never billed | Billed on active profile count |
| Test runs with nothing sent | A two-week automation in a second, on a virtual clock | Previews only, no dry run on a clock |
| Branding on emails | None, send from your domain | Klaviyo badge on the free plan |
| Support on the free plan | Email support on both plans | Email support for 60 days only |

## Cowliss vs Mailchimp

Billed on all stored contacts, including unsubscribed ones until archived. Products share one account as audiences, five on Standard. List price on Standard, checked 2026-10-12 at https://mailchimp.com/pricing/marketing/.

|  | Cowliss | Mailchimp |
| --- | --- | --- |
| Adding a second product | A prompt to your agent, then cow push | New audience or account, configured manually |
| What you pay for | Events, emails and automation runs only | All stored contacts and send volume |
| Automations as JSON files in your repo | Yes | No |
| Unsubscribed or dormant contacts | Free, contacts are never billed | Billed until manually archived |
| Team seats | Unlimited on all plans | 5 seats on Standard |
| Overage behaviour | Hard stop, no unexpected bills | Automatic overage charges |
| Free plan | $0.50 monthly usage included, every feature | 250 contacts, 500 sends, no automations |

## Cowliss vs Customer.io

Starts at $100 for 5,000 profiles, then $0.009 per profile, counted across workspaces. Essentials allows two workspaces. List price on Essentials, checked 2026-10-19 at https://customer.io/pricing.

|  | Cowliss | Customer.io |
| --- | --- | --- |
| Adding a second product | A prompt to your agent, then cow push | Separate workspace set up by hand |
| What you pay for | Events, emails and automation runs only | Stored profiles with $100 monthly minimum |
| Automations as JSON files in your repo | Yes | No |
| Free plan | $0.50 monthly usage included, no card | No |
| Test runs with nothing sent | A two-week automation in a second, on a virtual clock | Previews only, no dry run on a clock |
| Pinned automation versions | Everyone mid run finishes the version they started | Edits reach people mid run |
| Support on the entry plan | Email support on both plans | Email and community only on Essentials |

## Cowliss vs Brevo

Meters emails sent across every product in the account; the 5k and 10k tiers cap contacts at 500 and 1,500. List price on Business, checked 2026-10-11 at https://www.brevo.com/pricing/.

|  | Cowliss | Brevo |
| --- | --- | --- |
| Adding a second product | A prompt to your agent, then cow push | Separate account or manual workspace setup |
| What you pay for | Events, emails and automation runs only | Monthly email send volume |
| Automations as JSON files in your repo | Yes | No |
| Test runs with nothing sent | A two-week automation in a second, on a virtual clock | Previews only, no dry run on a clock |
| Team seats | Unlimited on all plans | 3 seats as an add-on |
| Branding on emails | None, send from your domain | Brevo logo on the free plan |
| Pinned automation versions | Everyone mid run finishes the version they started | Edits reach people mid run |

## Cowliss vs Resend

Marketing contacts across the team's audiences; transactional sends and automations over 10k are billed separately. List price on Pro marketing, checked 2026-10-19 at https://resend.com/pricing.

|  | Cowliss | Resend |
| --- | --- | --- |
| Adding a second product | A prompt to your agent, then cow push | Separate projects and manual configuration |
| What you pay for | Events, emails and automation runs only | Marketing contacts plus separate transactional plans |
| Automations as JSON files in your repo | Yes | No |
| Unsubscribed or dormant contacts | Free, contacts are never billed | Billed on stored marketing contacts |
| Test runs with nothing sent | A two-week automation in a second, on a virtual clock | Previews only, no dry run on a clock |
| Pinned automation versions | Everyone mid run finishes the version they started | Edits reach people mid run |
| Receipts and campaigns on one bill | Yes | Two plans, billed separately |