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Pick up to three. Scores are curated estimates on a 0–10 scale. Lock-in: higher = worse.

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DimensionSendGrid (Twilio)Loops
Overall8.17.9
Capability fit9.08.0
Price / performance7.57.6
Latency / reliability8.88.2
Developer & agent DX7.28.8
Privacy / data retention7.87.8
Lock-in risk (higher = worse)5.04.2
Maturity / track record9.57.8
PricingHigh-volume email; free tier limited; ESSP/pro plans; Twilio-owned.As of 2026-09-14 (loops.so/pricing + docs billing): Contact-based SaaS email (marketing + transactional). Free Early Stage — up to 1,000 subscribed contacts, ≤4,000 sends/30d, Loop…