v0.18.0

0.18.0 (2026-10-28)

Features

• Add throttle for transactional emails and workflows (f228961)
• api: let headless senders point List-Unsubscribe at their own one-click link (50be3c9)
• let headless senders point List-Unsubscribe at their own one-click link (d5c5f89)
• Verify SES configuration sets on startup (2f3cb50)

Bug Fixes

• api: encode non-ASCII headers and attachment filenames (ea3e7ae)
• api: encode non-ASCII headers and attachment filenames (de90dae)
• api: honour data-plunk-one-click for headless sends only (6f9cebf)
• api: verify request origin on session-authenticated routes (00177cc)
• api: verify request origin on session-authenticated routes (6eacbfc)
• Cancel workflow executions and scheduled campaigns when a project is disabled (cf2d384)
• contacts: honour the status filter in select-all bulk actions (0fe3b07)
• contacts: honour the status filter in select-all bulk actions (d794c5a)
• Correctly end job if last step of workflow is delay (18f18c1)
• landing: Remove inbound attachment and threading claims (beac2e3)
• mcp: page through campaigns and templates with page/pageSize (e720913)
• mcp: page through campaigns and templates with page/pageSize (28e0aa4)
• mcp: read the bare array GET /segments returns in plunk_list_segments (3de3369)
• mcp: read the bare array GET /segments returns in plunk_list_segments (674c2f5)
• Only accept SNS messages from topics in our own AWS account (4c84f64)
• segments: filter by segment membership without loading members (5848c60)
• segments: filter by segment membership without loading members (d44788f)
• segments: scope referenced segments to the project (ce58df5)
• templates: only accept filters that keep the unsubscribe URL intact (6f2508c)
• templates: recognise spaced unsubscribe placeholders in the headless warning (3e7ee20)
• templates: recognise spaced unsubscribe variables in the headless warning (dd2c6c0)
• webhooks: ignore opens SES marks as automated (3c1af34)
• webhooks: ignore opens SES marks as automated (032b868), closes #531
• web: refetch project data once the active project is known (537d5a4)
• web: refetch project data once the active project is known (b7e1265)
• web: start from an empty cache after signing out (1097f0c)
• workflows: keep cancelled executions from resuming (189b907)
• workflows: keep cancelled executions from resuming (7792d6b)
• workflows: mark only the step that failed (2c11c81)
• workflows: mark only the step that failed (ee8db3f)
• workflows: resume a waiting step once (d0f5471)
• workflows: resume a waiting step once (9c333bb)
• workflows: treat a zero wait timeout as no limit (0ab8bf9)
• workflows: treat a zero wait timeout as no limit (006cc4c)

Performance Improvements

• contacts: serve the contact field list from Redis (627f7e9)
• contacts: serve the contact field list from Redis (af0007f)

Code Refactoring

• web: correct comments around the active project choice (df2f38b)

Documentation

• Add open tracking and workflow improvements to the changelog (1fe84b5)
• document data-plunk-one-click for sender-hosted one-click unsubscribe (77e85b8)
• tracking: explain how automatic opens are left out (9805c18), closes #531
• workflows: say what cancelling an execution stops (cf264fa)
• workflows: suggest the email event names workflows receive (bf6a6ef)
• workflows: suggest the email event names workflows receive (2eac0dd)