Changelog

1.0.0-pl2

Features ported from tcMailing.

Fixed mailing (fixed + fixed_days, default 7): after a successful send, addresses go on a temporary blacklist; any template is blocked until expiry; expired rows are purged automatically. Blacklist column Until (expires_on).
Do not resend now has a day window (skip_dupes_days, default 30). Partial skip: skipped emails are listed, the rest are queued; fails only if everyone already got the template.
Address stats: lookup field and clickable emails open a modal with summary, mailing history and events.
Selecting a saved list fills Addresses; the server accepts list_id when the textarea is empty.

First release.

MODX Revolution 2.8 and 3.x, PHP 7.2 or newer. One package for both versions.
Letter templates in chunks, HTML or visual editor, phone/desktop preview on Templates, Campaign and Unsubscribe.
Recipients from a list, saved lists and FormIt submissions. Duplicates are dropped, addresses that already got the template can be skipped.
Send window: date and hours in postcraft_timezone. No stats for an address → evenly across the window, with opens → at its usual hour.
Per-mailbox and system rate limits (hour / day / batch), warm-up, multi-day spread for long lists, plan estimate on Campaign, auto-pause on SMTP limit / failure streak / bounce %.
Pause, resume, cancel and edit of a scheduled campaign.
Preheader, Reply-To, sender mailbox per campaign. PHP mail or SMTP, the SSL check can be turned off per mailbox.
Open and click tracking with a bot and prefetch filter.
Unsubscribe pages per site and language, a reason form, List-Unsubscribe headers. Languages from Localizator or MODX contexts, texts in Russian and English, an English draft for other languages.
Stats export to Excel.
Blacklist with bulk add, bounce processing over IMAP.
Several domains: links follow the sender domain, edge on MODX and without it, HMAC-signed requests.