A shared address book that fills itself in

Every client and collaborator you’ve worked with is already in your history. Instead of retyping their email each time, the team’s contacts build themselves from who you’ve worked with.

The UnaTask team, Building UnaTask. Jun 22, 2026. 4 min read.

Marisol goes to invite a client to a review call and stalls on the simplest possible step: his email address. She’s worked with him for months. She has emailed him a hundred times. And yet, in this moment, in this tool, she’s digging through her inbox to copy an address she has clearly typed before, because the tool has no memory of the people she works with, only the ones who happen to have accounts.

Workspaces remember their members and forget everyone else, which is backwards, because the everyone-else is most of who you actually deal with. Clients, freelancers, partners, the guest from last month’s call, they pass through your work constantly and leave no trace the tool can reuse. So you retype the same handful of external addresses forever, and every retype is a fresh chance to fat-finger a letter and send an invite into the void.

The directory builds itself

UnaTask keeps a shared contacts directory for the workspace, and it fills itself in. The people on your team are there, and so is everyone you’ve already worked with: past guests on events, collaborators you’ve invited before. There’s no list to maintain by hand. The history you’ve already made is the address book.

  • Contacts assemble automatically from members and people you’ve worked with before.
  • Email fields autocomplete, so you pick a name instead of retyping an address.
  • It’s shared across the workspace, so a teammate’s past guest is a contact you can reach too.
  • Nothing to maintain: working with someone is what adds them.

The shared part does quiet work for a team. The client a colleague dealt with last quarter isn’t locked inside their personal memory, they’re a contact the whole workspace can reach. So when you cover for someone, or pick up an account they started, the people are already there, no “can you send me their email” round trip required.

Now Marisol starts typing the client’s name and it completes, address and all, because she’s worked with him before and the directory noticed. The inbox archaeology is gone, the typo risk with it. The address book she never built is just there, made entirely out of the work she’d already done.

You shouldn’t have to maintain a list of the people you obviously know. Working with someone should be enough to remember them, for you and the whole team.

Read next

  • Invite anyone to the call, even if they’re not on your team
  • Stop rebuilding the same project from scratch
  • List or board. See your work the way your brain wants

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