Betterbird aims to improve everyday email work, so compare it with a mailbox that reflects your real habits: multiple accounts, large folders, filters, attachments, and an offline period. Use a copy or noncritical account for the trial and keep the existing profile backed up.
Check search accuracy, keyboard workflow, calendar or add-ons you depend on, and how it recovers after reconnecting. Send and receive from every configured identity; then inspect which messages remain locally available without network access. A nicer first impression is less valuable than dependable search and a reversible profile migration when years of correspondence are at stake.
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