[Feature] Reusable SMTP batch sessions with preflight, reconnect, and pause-on-failure #16

New Issue

zemion · 2026-07-14T20:08:43+02:00

zemion commented

2026-07-14 20:08:43 +02:00

Problem / User Need

Campaign mail sending should improve SMTP reliability and progress behavior by reusing SMTP sessions per campaign batch where possible, reconnecting on connection failure, preflighting DNS/connectivity, and pausing on systemic SMTP failures.

Acceptance Criteria

SMTP sending can reuse a session/connection for a campaign batch when server policy allows it.
Transient connection failures trigger controlled reconnect behavior.
Preflight checks validate DNS/connectivity/auth where possible before the send starts.
Systemic SMTP failures pause or block the batch instead of producing many repeated failures.
Progress and failure reasons are clear to campaign users.

Notes / Decisions

Campaign send-progress UI should consume the clearer progress/failure states.

## Problem / User Need Campaign mail sending should improve SMTP reliability and progress behavior by reusing SMTP sessions per campaign batch where possible, reconnecting on connection failure, preflighting DNS/connectivity, and pausing on systemic SMTP failures. ## Acceptance Criteria - SMTP sending can reuse a session/connection for a campaign batch when server policy allows it. - Transient connection failures trigger controlled reconnect behavior. - Preflight checks validate DNS/connectivity/auth where possible before the send starts. - Systemic SMTP failures pause or block the batch instead of producing many repeated failures. - Progress and failure reasons are clear to campaign users. ## Notes / Decisions Campaign send-progress UI should consume the clearer progress/failure states.

zemion added the

labels 2026-07-14 20:08:43 +02:00