Tapstack designs, ships and runs a growing line of business apps on one shared platform. Tapni, MailSign, Siteio and t.link share one account, one workspace and one CRM, and every new app plugs straight in.
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Login, billing, members, brand and customer data are built once. Every app we ship stands on that foundation, so your team sets things up one time.
Your Tapni account opens every app, with Google, Microsoft, Apple or SSO. Sign-in stays on auth.tapni.com.
One subscription for the apps your team uses. Add or remove seats from the workspace at any time.
Leads and contacts from every app land in one place and sync to HubSpot, Salesforce or Pipedrive.
Organization, members, roles and brand live once in the workspace. Each app picks them up on its own.
A new app starts on the same account, billing and data, so it is ready for your workspace on day one.
Single-use handoffs between apps, MFA, single sign-on and roles per workspace. Web, iOS and Android.
Apps for every place your team shows up: in person, in the inbox, on the web and in every link you share.
NFC cards, QR codes and wallet passes that open a live digital card. Capture every lead you meet.
See the app
One signature design, rolled out to the whole company in Outlook and Gmail.
See the app
Coming soonSites that build themselves from your card, on your own domain.
See the app
In buildShort, branded, trackable links for teams and campaigns.
See the app
Most companies build one product and bolt on the rest. We built the line first, so every app after Tapni starts further ahead.
Account, billing, members, brand and CRM sync are built once and reused by every app.
Each new app starts on that foundation, so we spend our time on what makes it useful.
Your workspace picks up every new app. No second login, no new setup, no data to move.
Your organization, members, billing and profile live in one place. Each app picks them up on its own.
Your Tapni account opens every app, with Google, Microsoft, Apple or SSO.
Update a title once. Your card, signature and site follow.
Invite the team once and decide who manages members, billing and apps.
Leads go to HubSpot, Salesforce or Pipedrive. People come from Entra or Google.
Views, leads and clicks across every app and every member.
Lock logos, colors and legal text so every touchpoint stays on brand.
Tapstack is the software factory behind Tapni, MailSign, Siteio and t.link. We build every app on one shared platform, so you sign in once, manage your team in one place and open each app without a second login.
No. Your Tapni account is your Tapstack account. Sign in with the same email, password, Google, Apple or Microsoft login you already use.
Yes. Pick Tapni, MailSign or both when you create your workspace, and turn on other apps later.
Sign-in happens on auth.tapni.com, so Tapstack never sees your password. MFA and single sign-on work as they do today.
t.link is the next app off the line. It will use the same account, billing and workspace as every other Tapstack app.
Sign in with your Tapni account or create a new one. Every app we ship lands in the same workspace.
