Loops

Loops is purpose-built for SaaS lifecycle email. The visual editor produces clean, brand-consistent emails without HTML wrangling. Audiences, events, and properties are first-class. Both transactional and marketing flows live in one product, which removes the usual two-tool stitching. The API and SDKs are straightforward, and the team has been responsive to developer feedback.

At an early stage the deciding factors are what the free tier actually covers, what the first paid invoice looks like, and how much of a founding engineer's week the setup costs. Feature depth that only matters at a million sends a month is noise until it is not.

Against a waitlist, a launch announcement, onboarding email, and the first transactional sends, Loops covers developer experience, scheduling, SDK breadth, and webhook coverage, and does not cover operating track record. Whether that gap matters depends on how central those are to the build.

• Free tier: 1,000 contacts and 4,000 sends/mo on the Free plan
• Best published rate per 1,000: Tiers not published in comparable form
• Starts at: $49/mo for 5,000 contacts
• DX score: 9/10
• Deliverability: Strong and improving; engagement-driven sender reputation typical of marketing platforms with real human-curated content.
• Operating since: 2022
• Scheduling: Yes
• SDKs: node, python, go, ruby, php
• Webhooks: Yes

Strong and improving; engagement-driven sender reputation typical of marketing platforms with real human-curated content.

SaaS startups and indie product teams that want a single tool for transactional plus marketing.

Pure high-volume transactional, agencies needing per-client sub-accounts.