Personal CRM basics
Contact management
Contact management is keeping the data about your contacts accurate and usable: one record per person, current details, no duplicates, synced everywhere.
Contact management is the data layer of staying in touch. It is the unglamorous work of making sure every person in your address book exists exactly once, with a current phone number, the right email, and details that don't contradict each other across your phone, laptop and whatever apps tapped into the list over the years.
Most people's contact data is in quiet disrepair: three entries for the same friend ('Anna', 'Anna Mobile', 'Anna K work'), numbers that died with old SIM cards, and a long tail of names nobody recognizes anymore. The cost is small but constant — a wrong number at the worst moment, a birthday attached to the duplicate you never open.
Contact management fixes the substrate. It is not yet relationship management — clean data doesn't make you call your mother — but every higher-level practice depends on it, the way cooking depends on a stocked and sorted kitchen.
Contact management vs. relationship management
The two terms get blurred in marketing copy, but the distinction is useful. Contact management asks: is the data right? One record per human, fields filled, duplicates merged, formats consistent. Relationship management asks: is the connection alive? Notes, last-contact dates, reminders, intent. You can have immaculate contact data and dying friendships, or thriving relationships scattered across a chaotic address book. Tools reflect the split — your phone's contacts app does pure contact management, a personal CRM layers relationship management on top. Doing the first well makes the second dramatically easier, which is why most CRM onboarding starts with an import-and-cleanup step.
The standards underneath: vCard and CardDAV
Contact data is one of the few personal-data domains with real open standards. vCard (RFC 6350) defines the file format — the .vcf files your phone exports — covering names, numbers, addresses, birthdays and photos in a way every major platform can read. CardDAV (RFC 6352) defines how devices sync those cards with a server, which is why an iPhone, Thunderbird and a Nextcloud instance can all share one address book. Practical consequence: any contact tool worth using should import and export vCard. If a product only offers a proprietary format, your contacts are hostages, and the eventual migration will cost you an afternoon of CSV surgery.
Hygiene in practice: dedupe, import, export
A workable cleanup routine has three moves. First dedupe: merge the multiple entries per person, keeping the freshest value per field — tedious by hand, which is why dedicated tools exist (Endearist ships a free contact deduplicator, and its app imports CSV and vCard so the cleaned list carries over). Second prune: archive the names you genuinely cannot place; an address book is not a museum. Third, establish an exit: export a full backup once or twice a year in an open format. Endearist adds Markdown export on top of the standard formats, on the theory that notes about people should outlive any particular app — including itself.
Try it yourself
Frequently asked questions
- How do I clean up years of messy contacts?
- Work in one pass with three piles: merge, keep, archive. Run a deduplication tool first to collapse obvious doubles, then skim the rest alphabetically — fix what you can in five seconds, archive what you can't place. Don't aim for perfection; aim for one trustworthy record per person you might actually contact. Most address books take under two hours this way.
- Why do duplicate contacts keep appearing?
- Because several systems write to your address book without coordinating: a SIM import here, a Google account there, a messenger that auto-creates entries, an old backup restored on a new phone. Each source spells the person slightly differently, so no automatic merge fires. The fix is structural: pick one system of record, disable contact write-access for apps that don't need it, and dedupe once after consolidating.
- What is the best format to export contacts in?
- vCard (.vcf) for fidelity — it is the open standard every phone and mail client reads, and it preserves photos, birthdays and multiple numbers per person. CSV for flexibility — it opens in any spreadsheet and survives into tools that don't speak vCard. Ideally export both: vCard as your restorable backup, CSV as your portable working copy.
Last updated: 2026-06-10
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