v2.9.8

• fix: implement :index/:last support in Sieve header tests (RFC 5260) 3b8365b
• fix(send-apn): set Mail.pushType to 'background' and expose note.aps + compile() a1802d4
• fix: improve TTI delivery reliability with six targeted optimizations 999a6f1
• fix: guard IMAP/POP3 auth cache, reduce SQLite memory pressure fd0a168
• chore: remove debug console.log/error/warn from helpers/send-apn.js 88cf51b
• fix: omit apns-push-type header for Mail push notifications c7f51fd
• fix: update debug-apns.js findAlias and use native http2 for push cd97356
• fix: match argon/push_notify canonical Mail push format and add mailbox filter 1a2054f
• fix: purge stale account_id rows on XAPPLEPUSHSERVICE re-registration ddd6440
• fix: set apns-priority 5 for Mail and comment out aps.m for debugging 044d976

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v2.9.7...v2.9.8