Senthop blog
Technical deep dives from the team building UK-built and hosted email infrastructure.
14 April 2026
ProductEvery major email API provider is US-based. UK businesses deserve infrastructure that keeps their data under UK jurisdiction — and that is exactly what we built.
12 April 2026
DeliverabilitySPF, DKIM, and DMARC are no longer optional. Google and Yahoo now reject unauthenticated bulk mail. Here is how the three protocols work together and how to get them right.
10 April 2026
EngineeringNew domains and IPs need to build reputation before sending at volume. Here is the 8-stage warmup strategy we built into Senthop, from 50 emails/day to 10,000/day.
8 April 2026
GuidesWebhooks are powerful but dangerous if you do not verify them. Here is how Senthop signs webhook payloads with HMAC-SHA256 and how to verify them in Node.js, Python, and Go.
6 April 2026
EngineeringSenthop runs 15 services with AI woven into deliverability analysis, IP warmup, send-time optimisation, and inbox prediction. Here is how we architected it and what 'AI-native' actually means.
Ready when you are
Create a free account and start sending in under five minutes. No credit card required.
Start free