# Discover mutuals

**URL:** <https://forum.delta.chat/t/discover-mutuals/4676>\
**Category:** Bots\
**Created:** [February 3, 2026, 4:29pm UTC](https://forum.delta.chat/t/discover-mutuals/4676 "2026-02-03T16:29:05Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![ian](https://forum.delta.chat/user_avatar/forum.delta.chat/ian/32/3164_2.png) [@ian](https://forum.delta.chat/u/ian)\
**Post date:** [February 3, 2026, 4:40pm UTC](https://forum.delta.chat/t/discover-mutuals/4676/2 "2026-02-03T16:40:28Z")

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I moved this comment to its separate issue:

> [@Probe existing email contacts upon installation for easy onboarding](https://support.delta.chat/t/probe-existing-email-contacts-upon-installation-for-easy-onboarding/4677):
>
> A user would install DC On first start, DC would scan for email addresses (along with fingerprints and public keys) in the device address book, the IMAP folder of the DC accounts of the user and possible further “external” IMAP accounts (not otherwise added to DC). If any entry has an email address not known to DC, DC would send a probe email to it. If DC on the other side accepts this contact and proceeds with encrypted communication, extend the device address book entry with the public key an…

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