TrekMail Blog
Practical guides, email hosting insights, and tips to get the most out of your domains and mailboxes.
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Email Migration
Transfer Emails From Gmail Without Duplicates or Data Loss
Most Gmail migration guides miss the real problem: labels, All Mail, and duplicate copies. This guide shows how to transfer emails from Gmail without breaking history.
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Alexey Bulygin
Email Migration
Transfer Email Accounts Without Downtime | TrekMail
Moving many mailboxes is live infrastructure work, not drag-and-drop busywork. Here’s how to transfer email accounts without split-brain routing, lost aliases, or weekend panic.
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Alexey Bulygin
Email Migration
Email Transfer: DNS, IMAP Copy, and Cutover Explained
Breaks down the three types of email transfer (domain, provider, account), explains the data layer vs. routing layer, covers what IMAP does and doesn't move, and provides decision trees for common migration scenarios.
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Alexey Bulygin
Email Migration
Move Email From One Host to Another Without Losing Mail
Most email migrations fail in the same places: duplicate imports, broken Sent folders, and bad DNS timing. This guide shows the safe IMAP process that avoids all three.
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Alexey Bulygin
Email Migration
Transfer Mailbox: DNS Cutover Checklist for MX, SPF, DKIM
A precise DNS cutover checklist for transferring a mailbox between email providers. Covers the 48-hour TTL countdown, SPF merging, DKIM pre-publishing, DMARC relaxation, MX record switch, and 72-hour post-cutover monitoring.
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Alexey Bulygin
Email Migration
Email Migration Steps: Day-by-Day Timeline for Zero Downtime
A forensic, day-by-day email migration timeline from T-minus 7 through T-plus 1. Covers discovery audit, pre-stage IMAP sync, TTL drop, Friday cutover, delta sync, verification gates, and rollback procedures.
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Alexey Bulygin
Email Migration
Email Migration Checklist: Pre-Flight to Post-Cutover (2026)
A comprehensive email migration checklist for operators who can't afford downtime. Covers forensic inventory, shadow IT audit, IMAP pre-staging, throttle management, DNS cutover, item count verification, and error troubleshooting.
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Alexey Bulygin
Deliverability & DNS
DMARC Fail: Fix Forwarding and Alignment Problems
DMARC fail on forwarded mail isn’t random. SPF breaks, DKIM gets mangled, alignment goes off the rails, and real messages vanish. Here’s how to diagnose it and fix it.
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Alexey Bulygin
Deliverability & DNS
Email Deliverability: The Operator's Guide for 2026
Email deliverability is no longer set-and-forget. This operator's guide covers the failure modes, DNS traps, reputation signals, and triage steps that keep business mail out of spam.
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Alexey Bulygin
Deliverability & DNS
DMARC Setup: Publish, Test, and Enforce Correctly
DMARC setup is simple until SPF, DKIM, forwarding, and third-party senders collide. This guide shows the record to publish, the tags that matter, and how to enforce safely.
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Alexey Bulygin
Deliverability & DNS
DMARC Analyzer: Read Reports and Fix Failures Fast
Most DMARC failures are not what they look like. This guide shows how to use a DMARC analyzer to separate spoofing, forwarding, and real DNS mistakes.
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Alexey Bulygin
Deliverability & DNS
Email Authentication SPF DKIM DMARC Setup Order
SPF first. DKIM second. DMARC last. This guide shows the safest way to set up email authentication without breaking legitimate mail flow.
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Alexey Bulygin