5.2.1

[Beam]

• [Segments] Enabled Elasticsearch query logging when Debug mode is enabled.
• [Segments] Fixed low performance of query results processing caused by double unmarshalling of JSON data.
• [Segments] Improved querying performance by executing Elasticsearch scrolls while the previous scrolls are still being processed.
• Fixed seeding of config options, which were included in the migration, but not present in the ConfigSeeder. remp/euobserver#268

[Campaign]

• Added bannerClosed, bannerClicked, bannerShown function between custom JS params to allow correctly handling banner events. remp/remp#1487
• Added banner dimension option force_manual_tracking to force manual events tracking for banners using given dimension. remp/remp#1489
  • When enabled for a dimension, the Track banner events manually checkbox is checked and disabled in the banner form, and the flag is enforced on save.
• Fixed snippet and collection edit forms breaking when a name contains JavaScript-sensitive characters; such snippets can now be opened and fixed. remp/remp#1405
• Changed campaigns:aggregate-stats command so it no longer aborts the whole run when only some campaign banners' stats requests to Beam Segments fail; those banners are skipped, the errors are printed. If every banner fails, it still fails loudly (non-zero exit). remp/remp#1491
• Raised the Beam Segments stats client's connect timeout from 1s to 3s, and made REMP_SEGMENTS_TIMEOUT the budget for the query alone rather than for connect + query. remp/remp#1491
• Fixed 14 banner template text columns being NOT NULL on freshly installed databases, while long-running databases kept them nullable.
  • The new 2026_08_28_120105_fix_nullable_fields_set_as_not_nullable_by_mistake migration restores the intended nullability. It is a no-op on databases that never lost it.
  • The 2021_02_22_084635_banner_template_texts migration changed these columns from string to text with ->change() without restating ->nullable(). Under Doctrine DBAL (Laravel 10 and older) ->change() kept attributes that were not stated, so the columns stayed nullable; since Laravel 11 it rebuilds the whole column definition and drops them. Databases migrated from scratch — or imported from the SQL schema dump, which was regenerated under the new behaviour — therefore ended up rejecting NULL banner texts that existing installations accept.

[Mailer]

• IMPORTANT: Added support for partitioning the mail_logs table by month to keep it performant at scale. Requires a manual migration and permanently scheduled commands afterwards — see Mailer/extensions/mailer-module/docs/MAIL_LOGS_PARTITIONING.md. remp/remp#1481
  • Added mail_logs:migrate-to-partitions, mail_logs:backfill-partitions, mail_logs:prune-partitions and mail_logs:seed-partitions commands.
  • Added a persisted daily stats rollup (mail_template_direct_stats) and a mail_logs_stats_state cutoff date so template/newsletter statistics stay accurate after old mail_logs rows are pruned.
  • mail_template_direct_stats starts out empty, so the migration requires a one-off mail:aggregate-mail-template-stats --from=<earliest mail_logs date> backfill run before mail_logs:migrate-to-partitions, or all pre-migration direct-send statistics (in particular, system/transactional templates) will read as 0 forever. mail_logs:migrate-to-partitions now refuses to run until this backfill has happened (--force overrides) — see the updated runbook's "Migration execution steps".
  • Added a unique key on (mail_template_id, date) to both mail_template_stats and mail_template_direct_stats, and changed their upsert() to a single INSERT ... ON DUPLICATE KEY UPDATE. Both tables are read as unbounded lifetime sums, so a duplicate day — which the recommended per-minute + daily --from schedule produced on every overlap, since the previous implementation was a read-then-write — permanently inflated reported statistics. The AddUniqueKeyToTemplateStatsTables migration removes any pre-existing duplicate rows (keeping the most recently written one) before adding the key.
  • The partitioned schema is built in a mail_logs_partitioned shadow table, deliberately not the mail_logs_v2 name used by the older bigint migration — mail:bigint_migration_cleanup mail_logs unconditionally drops mail_logs_v2 and would otherwise destroy an in-flight migration.
  • All four commands bound the metadata-lock wait of every DDL statement they run against the live mail_logs (RENAME TABLE, EXCHANGE PARTITION, REORGANIZE PARTITION, DROP FOREIGN KEY): each attempt waits at most 5 seconds on a session-only lock_wait_timeout, then withdraws its request so blocked application writes drain, and retries for ~10 minutes before failing cleanly. Without this, MySQL's one-year default lock_wait_timeout turns an unavailable metadata lock into an indefinite hang that queues every mail_logs write behind it and can exhaust max_connections. Recommendation: alert on the scheduled commands' exit status — a failed step is now a clean non-zero exit with nothing half-applied, not a stall.
  • mail_logs:prune-partitions and mail_logs:backfill-partitions swap stage tables in with EXCHANGE PARTITION, which MySQL rejects unless the stage table's instant-column attributes match the partitioned table's. Since MySQL 8.0.29 ADD COLUMN/DROP COLUMN default to ALGORITHM=INSTANT, so one such ALTER on mail_logs permanently breaks both commands (Non matching attribute 'INSTANT COLUMN(s)' between partition and table) until the whole table is rebuilt. Recommendation: write every future column change on mail_logs with an explicit ALGORITHM=INPLACE — see the runbook's "Other behavioral notes" for the one-line repair if it does happen.
  • mail_logs.created_at/updated_at change from TIMESTAMP (UTC-normalised) to DATETIME (wall-clock), so mail_logs:migrate-to-partitions converts them using its session time_zone, which it now pins to PHP's configured zone by name rather than to a fixed UTC offset. A fixed offset applies today's DST state to the whole history: on one real 3.7M-row dataset that shifted 1.1M rows by an hour, 219 of them onto the wrong calendar day and 7 into the wrong month partition. Named zones require MySQL's time-zone tables to be populated; the command falls back to the fixed offset with a loud warning if they are not. Recommendation: run mysql_tzinfo_to_sql /usr/share/zoneinfo | mysql -u root mysql before the migration — and if the session zone changes between runs, truncate mail_logs_partitioned and clear the mail_logs_partitions_migration_tier_*_last_id Redis keys first, since the composite (id, created_at) primary key makes a re-copy under a different converted timestamp a duplicate id rather than a no-op.
  • mail_logs:migrate-to-partitions drops the mail_log_conversions → mail_logs foreign key after the table swap (against the frozen mail_logs_old) rather than before it, and its phases are renumbered to a gapless Phase 0–8. An FK drop takes a metadata lock on the parent table that concurrent writes can starve indefinitely, so doing it against the live table risked taking the database down. Recommendation: pause worker:mail, worker:hermes and the mail:mailgun-events cron for the duration of the go-live run — the runbook's new "Locking behaviour" section lists every writer that needs pausing, including the two API endpoints that cannot be stopped by stopping a process.
• BREAKING: Removed the hard_bounced_at column from mail_logs, and the matching hard_bounced_at filter/response field from the mail:logs and mail:logs-count-per-status API endpoints. remp/remp#1481
  • Use dropped_at instead — bounce events are now recorded there.
• BREAKING: Removed LogsRepository::getNonBatchTemplateStats(). remp/remp#1481
  • Use MailTemplateDirectStatsRepository::sumForTemplates() instead; it reads a daily precomputed rollup (populated by mail:aggregate-mail-template-stats) rather than live-scanning mail_logs, and no longer exposes a hard_bounced key.
• BREAKING: Changed mail:aggregate-mail-template-stats to take --date=/--from= options instead of a positional date argument (including relative values like today/tomorrow), and changed its no-option default from "yesterday" to "yesterday and today". remp/remp#1481
  • Update any crontab/scheduler entries: mail:aggregate-mail-template-stats YYYY-MM-DD becomes mail:aggregate-mail-template-stats --date=YYYY-MM-DD (or --from=YYYY-MM-DD to recompute/backfill a range, including today); a today/tomorrow pair of entries becomes a single bare mail:aggregate-mail-template-stats entry, since the new default already covers both. Add a second, daily entry with --from=$(date -d '-30 days' +%Y-%m-%d) so opens/clicks/conversions that arrive after a day was first aggregated are still picked up — see the updated runbook's "Permanently scheduled" section.
• BREAKING: mail:aggregate-mail-template-stats now refuses a --date=/clamps a --from= that reaches below the active mail_logs_stats_state cutoff date, since mail_logs no longer holds complete data before it once pruning has run; pass --force for a deliberate override. remp/remp#1481
  • Only affects installations that have completed the mail_logs partitioning migration and started pruning; no effect otherwise (the cutoff date stays unset).
• BREAKING: Dropped all foreign keys to/from mail_logs (InnoDB forbids FKs on partitioned tables); its primary key is now composite (id, created_at) instead of id. remp/remp#1481
  • If you have custom modules/repositories doing implicit Nette DB joins against mail_logs (e.g. ->where('mail_template.code', ...)), either register a Conventions service that knows these relations (see Models/Database/PartitionedConventions.php for the pattern) or rewrite them as explicit WHERE conditions on the FK id column — the default DiscoveredConventions FK-based join discovery no longer resolves joins to/from this table.
• BREAKING: Removed the mail:migrate-mail-logs-and-conversions command (the second step of the mail_logs/mail_log_conversions bigint migration for installations older than 1.1.0), along with its logConversionsRepository dual-write configuration. remp/remp#1481
  • If that migration never completed on your installation — mail_logs.user_id missing, or a leftover mail_logs_v2 / mail_log_conversions_v2 / mail_logs_old table — complete it on a pre-5.2.0 release before upgrading. The partitioning migration hard-requires it (it copies mail_logs.user_id), so CreatePartitionedMailLogsTable and mail_logs:migrate-to-partitions both abort with instructions instead of failing halfway through.
• BREAKING: mail:bigint_migration_cleanup mail_logs now refuses to drop mail_logs_old while mail_logs_backfill_state still has pending month partitions. remp/remp#1481
  • mail_logs_old is the only source mail_logs:backfill-partitions can read historical months from, so dropping it early loses them irrecoverably. Finish the backfill first, or drop the table manually if you have deliberately abandoned it.
• BREAKING: Removed unused Remp\MailerModule\Hermes\ValidateCrmEmailHandler and Remp\MailerModule\Models\Crm\Client::validateEmail(). remp/euobserver#266
  • If you had the handler registered in config.local.neon, remove it; the crm:validate-emails command still covers email validation.
• Added Remp\Mailer\Hermes\ConfirmCrmUserHandler confirming a not-yet-confirmed CRM user account when the user clicks any link in a received email. remp/euobserver#266
  • Added Client::confirmUser() calling CRM's users/confirm API.
  • To enable, register the handler in config.local.neon (see config.local.neon.example); requires crmClient, and the CRM API token needs the Users:UsersConfirm API resource.
• Fixed a PHP 8.5 deprecation (Non-canonical cast (boolean)) in the yesno Latte/Twig filter, which Tracy escalates to an exception with error_reporting(E_ALL).
• Added a configuration/update permission check to the Settings (mailer configuration) page, following the existing batch/start pattern. As with other privileges, it's unrestricted by default; register it via permissionManager in config.local.neon to require a role for access — see Mailer/extensions/mailer-module/README.md's "Permission management" section.
• Added a per-newsletter-type "Exclude emails from search" option that hides a mail type's templates from the email template search. remp/remp#1462
• Fixed a null error in the newsletter list form when no system mail type exists. remp/remp#1462
• Added support for WordPress block-editor (Gutenberg) content to the Newsfilter, Napunk Newsfilter, Grafdna and Novydenik Newsfilter generators. remp/remp#1498