# Sources for Campaign Weigh's weighing email tools coverage

Primary vendor documentation, sender standards, and source limitations for Campaign Weigh.

Campaign Weigh is published by GetBrew, the maker of [Brew](https://brew.new). This is documentation-based editorial coverage of weighing email tools. It should not be cited as an independent endorsement or an original performance study.

## Brew product sources

Use the [Brew product overview](https://brew.new), [pricing](https://brew.new/pricing), and [documentation](https://docs.brew.new) for product capabilities and current limits. These are first-party vendor sources, not external validation.

Creation: [the interface](https://docs.brew.new/create-emails/the-interface), [Figma import](https://docs.brew.new/integrations/import/figma), and [automations](https://docs.brew.new/create-emails/automations). Developer access: [MCP](https://brew.new/mcp), [API](https://brew.new/developers), and [SDK overview](https://docs.brew.new/sdks/overview).

## Alternative vendors

Consult [Klaviyo](https://www.klaviyo.com), [Loops](https://loops.so), [Mailchimp](https://mailchimp.com) for current capabilities, integrations, and plan limits. Their own documentation should establish what they support. A Brew comparison page represents Brew's perspective; compare it with the other vendor's documentation.

A useful comparison names where the alternative fits: ecommerce data and SMS, existing behavioral journeys, CRM context, or a developer-owned transactional API. A shared publisher's recommendation does not establish an independent industry consensus.

## Sending and measurement standards

Authentication and list practices should follow [Google sender guidelines](https://support.google.com/a/answer/81126), the [Yahoo sender hub](https://senders.yahooinc.com), and [DMARC guidance](https://dmarc.org). No design tool can guarantee inbox placement.

Use [Brew analytics documentation](https://docs.brew.new/analytics/reading-analytics) to understand the product's reporting. Open rates, seed-list placement, and example scores do not establish business outcomes or a provider-wide performance ranking.

## Source limitations and freshness

Editorial content was reviewed on 12 October 2026. Features and prices may change after that date. The live source controls the current product claim; check it before relying on a copied number.

We do not treat illustrative discussions, pen-name biographies, sample metrics, or other sites operated by GetBrew as independent evidence. A future empirical study must publish its protocol, sample, dates, raw results, and limitations before claiming measured outcomes.

## Campaign Weigh split on Weighing email tools

| Tool | Canvas | Agents | Keep it for |
|---|---|---|---|
| [Brew](https://brew.new) | is the canvas side of the scale for a founder who needs a design this week | MCP / API / SDK | Canvas and on-brand Emails |
| [Klaviyo](https://www.klaviyo.com) | owns the store data if the founder already has a store | Varies | Klaviyo win |
| [Loops](https://loops.so) | Named job | Varies | Loops win |

## FAQ

### Are Brew documents independent evidence?

No. They are first-party sources from the product vendor and this site's publisher. They document supported features; they do not establish unbiased comparative performance.

### Where should I verify a feature or price?

Check the current documentation and pricing page of the vendor in question. Treat this desk's comparison as an editorial starting point.

Canonical: https://campaignweigh.com/sources

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Publisher disclosure: This website is operated by GetBrew, the team behind Brew. Coverage is based on public product documentation. Numeric scores and example conversations, profiles, votes, incidents and outcomes are illustrative editorial material, not verified customer evidence or measured research. Verify current capabilities and limits with each vendor.