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Supported devices, channels and file sizes

What Twintual runs on, which channels and languages it supports, which file types it can read, and the largest file you can attach to a reply.

Last updated November 5, 2026

This article lists what Twintual supports: where you can use it, which channels and languages it works with, which files it can read, and how big a file can be. For how many profiles, channels and sends your plan includes, see Plan limits.

Does Twintual work on iPhone, Android and my computer?#

Twintual runs in two places, and your account works the same on both:

  • The web app, in the browser on a computer. Twintual supports the latest two versions of Chrome, Edge, Firefox and Safari.
  • The phone app, for iPhone and for Android.

Plans, billing, invoices and cancellation are only in the web app. On the phone these pages show Continue on desktop. See Can I manage billing from the phone app?.

Which browsers does Twintual support?#

The web app supports the latest two versions of Chrome, Edge, Firefox and Safari.

Which languages does Twintual support?#

The app and the drafts it writes for you work in English and Spanish. You switch in Settings, then General. See How do I change the app language?.

Which channels and drives are supported?#

  • Email: Gmail, Outlook, and Custom Email for any other mailbox.
  • Messaging: Slack, Teams, WhatsApp Business, Google Chat, Instagram Business DMs and Telegram.
  • Meeting notes: Fathom and Fireflies.
  • Support tickets: Zendesk, Intercom, Help Scout and Freshdesk.
  • Drives and clouds: OneDrive, SharePoint, Notion and Google Drive, as read-only knowledge sources.

A channel marked Coming soon is not available yet. See Which channels can I connect? and Which drives and clouds can I connect?.

How big a file can I attach to a reply?#

Each channel has its own largest file, and Twintual never accepts more than 95 MB for one file. These are the limits when you attach a file with Attach file:

  • Gmail: 25 MB per message, counting everything attached.
  • Custom Email: 25 MB per message, counting everything attached.
  • Instagram Business: 25 MB per file, up to 10 files per message.
  • Outlook: 95 MB.
  • Slack: 95 MB per file, up to 10 files per message.
  • Teams: 95 MB per file, up to 10 files per message.
  • Google Chat: 95 MB.

If a file is too big, you see This file is too large to attach. before it is uploaded, and nothing is sent. Remove the file or send a link to it instead. If a channel cannot carry files at all, such as WhatsApp Business or Telegram, you see that the channel does not accept the file.

Which file types can Twintual read?#

This is about the files in a knowledge source you connected, not about attachments. From OneDrive and SharePoint, Twintual can read:

  • PDF files.
  • Word, Excel and PowerPoint documents (for example .docx, .xlsx and .pptx), and the older .doc, .xls and .ppt formats.
  • OpenDocument files (.odt, .ods and .odp) and Rich Text (.rtf).
  • Plain text files such as .txt, .md, .csv, .json and .html.

Pictures, videos, zip files and other formats are skipped, and Twintual does not download them. A file larger than 50 MB is not read, and only the first part of a very long document is kept. See Files and knowledge sources.

Where do I find exact numbers for my plan?#

How many profiles, channels per profile and sends per month you get depends on your plan. Plan limits lists them for every plan, and Team & billing shows how much of your own plan you have used.

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