Changelog

New features, improvements, and fixes for the SpiderMail transactional email engine.

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v1.6.0June 12, 2026

Advanced Template Engine & Analytics Dashboard

AddedVisual email template builder with drag-and-drop blocks and live preview
AddedReal-time delivery analytics: open rates, click tracking, bounce rates
ChangedTemplate engine supports nested Liquid loops with 10x faster execution
FixedDKIM signature validation failing on forwarded messages
v1.5.0May 30, 2026

Webhook System & Deliverability Engine

AddedWebhook delivery with exponential backoff and dead-letter queue
AddedAutomated IP warm-up scheduler for new sending domains
ChangedSMTP relay now supports TLS 1.3 with DANE verification
FixedRate limiting not respecting per-domain throttle windows
v1.4.0May 15, 2026

Domain Authentication & Compliance

AddedOne-click DKIM/DMARC/SPF configuration with DNS auto-generation
AddedGDPR-compliant unsubscribe with one-click list-unsubscribe headers
FixedHTML-to-text fallback generating broken plain-text
v1.0.0March 20, 2026

SpiderMail Launch

AddedTransactional email engine with sub-second delivery and 99.9% uptime SLA
AddedSMTP relay and REST API for sending emails from any application
AddedPre-built templates for welcome, reset, and receipt flows
AddedReal-time event webhooks for delivery, bounce, open, and click events