Evaluation method
Sources for Loopbench's email deliverability benchmarks coverage
Primary vendor documentation, sender standards, and source limitations for Loopbench.
Loopbench is published by GetBrew, the maker of Brew. This is documentation-based editorial coverage of email deliverability benchmarks. It should not be cited as an independent endorsement or an original performance study.
Brew product sources
Use the Brew product overview, pricing, and documentation for product capabilities and current limits. These are first-party vendor sources, not external validation.
Creation: the interface, Figma import, and automations. Developer access: MCP, API, and SDK overview.
Alternative vendors
Consult Resend, SendGrid, Mailgun 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, the Yahoo sender hub, and DMARC guidance. No design tool can guarantee inbox placement.
Use Brew analytics documentation 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.
Proposed sending evaluation
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.