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UPDATE: Thanks for the comments so far. To clarify my situation:
My main use cases are: Gmail (personal): For personal contacts. Gmail (work): For professional contacts related to my role. Outlook (work): For internal and external business communication. LinkedIn: Managing professional connections. Messaging apps (WhatsApp, Messenger, etc.): Keeping in touch with a wide range of contacts.
I’ve tried syncing across these platforms using Google Contacts, vCard exports, and a few automation tools, but the results have been inconsistent. Either the syncing doesn't work as expected, or there’s a lot of manual cleanup involved—especially when contacts change roles or details across different apps.
I’m wondering if anyone has found a more seamless way to manage contacts across all these different contexts? I’d love to hear any recommendations for more advanced tools, automations, or strategies that have worked for you.
I personally use a paid E-Mail service (mailbox.org) and a self hosted nextcloud.
The APP myphoneexplorer can be used to sync offline.
This can be quite difficult to achieve. The moment your contact information is given to someone using Android, it will be synced up with Google (and known by most Google properties).
> I personally use a paid E-Mail service (mailbox.org)
May I know how long you’ve been using it and how the experience has been? Are you using it with a custom domain?
Disclaimer: I use this email only for friends and family, told them not to tell anybody and did not register ANY internet account with it - so no spam, no unwanted emails and no shit.