Lindy vs. Deck: Which AI Assistant Fits Your Work?

Lindy and Deck can both take work from an email, prepare follow-ups, and help with recurring tasks. The experience around that work is different. Lindy connects to your inbox, calendar, meetings, and other business tools so its assistant can act across them. Deck gives your assistant its own email address. It learns from the threads and files you deliberately CC or forward, then sends its work back to you.

We make Deck, so you should read this as a clear explanation of fit rather than a neutral lab test. The Lindy details below come from its current product pages and documentation, checked July 15, 2026.

The short answer

Choose Lindy when you want one assistant connected across email, calendar, meetings, CRM, and a large integration catalog. Its current assistant can triage email, prepare and send replies, schedule meetings, capture notes, and run configurable automations.

Choose Deck when you want a smaller sharing boundary and a familiar way to delegate. You email your assistant the same way you would email a colleague. It sees the material you send, replies only to you, and can turn that context into a brief, report, spreadsheet, document, presentation, or recurring check.

Some teams can use both. Lindy can handle work that depends on broad connected access. Deck can receive the selected thread or finished analysis that deserves a separate report, project, or review-first deliverable.

Lindy vs. Deck at a glance

Question	Lindy	Deck
How do you reach it?	Web, email, Slack, iMessage, SMS, and connected workflows	CC or forward its email address from any email provider
What can it see?	Connected inbox, calendar, meetings, and configured integrations	Threads, files, Projects, and supported sources you choose
Email behavior	Can triage, draft, and send through configured email tools	Sends results only to you; it never replies to other people on a thread
Workflow depth	Visual agents, triggers, actions, and broad integrations	Plain-language requests and scheduled reports with one emailed result
File outputs	Depends on the configured workflow and tools	PowerPoint, Excel, Word, PDF, and CSV attachments
Best fit	Connected automation across several systems	Deliberate delegation, reporting, and private review through email

Where Lindy is stronger

Lindy is the more expansive automation platform. Its documentation describes an assistant with email and calendar access, meeting assistance, text-message access, and configurable agents. Lindy Mail can also give an agent a dedicated address that receives and sends email as part of a workflow.

That range matters when the job spans several write actions. A team might want an agent to receive a lead, qualify it, update a CRM, draft outreach, and schedule the next step. Lindy's visual workflow model and integration catalog are built for that kind of chain.

Lindy also has a direct inbox-management story. Its current product material describes triage, drafts, sender research, scheduling, and follow-up work grounded in connected email and calendar context. If you want your assistant to work across the mailbox before you select a thread, that connected approach fits the job.

Sources: Lindy Assistant documentation, Lindy Mail documentation, and Lindy's AI email writer.

Where Deck is stronger

Deck makes the handoff visible. You choose the thread, attachment, or instruction and send it to an assistant address. That is useful when you want an AI teammate involved in selected work without connecting it to the whole mailbox.

The review path is also simple. Deck sends its work to you and only you. A thread may include a client, candidate, vendor, or colleague; Deck's response still returns privately to your inbox. You decide what leaves from there.

Deck is especially useful when the output is larger than an email draft. Ask for a board pre-read, monthly management report, QBR presentation, KPI spreadsheet, research brief, or PDF. Deck can attach the real file to the email, so the deliverable lands where your work already arrives.

Recurring reports follow the same pattern. Select the Projects and supported read-only sources, give Deck the standing brief, and receive one consolidated result on the schedule you set. HubSpot, Notion, Slack, Granola, calendars, and web research can supply context when connected and approved.

Setup and control

Lindy asks you to connect the systems its assistant will use. Its docs say Google sign-in can connect email and calendar during setup, with additional channels and integrations available afterward. Teams should review the permissions and write actions required by each workflow.

Deck starts with an address. Add it as a contact, then CC or forward the first piece of work. Nothing is installed in your mailbox. Your assistant sees only what you share through email, selected Projects, and the read-only connections you enable.

Those approaches serve different comfort levels. Broad access gives Lindy more places to act. A selected handoff gives Deck a narrower working set and an obvious review point.

Which one should you choose?

Lindy is likely the better fit if you want:

• Multi-step agents that write across connected business systems.
• Inbox triage and meeting work grounded in broad account access.
• A visual builder with triggers, actions, and a large integration catalog.
• An assistant available through text, Slack, web, email, and other channels.

Deck is likely the better fit if you want:

• An assistant you can reach from Gmail, Outlook, iCloud, Superhuman, or any provider.
• Deliberate sharing through CC and forwarding.
• Private results that come back only to you.
• Recurring reports and finished PowerPoint, Excel, Word, PDF, or CSV files.
• A setup that feels like adding a colleague to the thread.

Try the Deck version of the workflow

Forward the source thread or files to your Deck assistant and write:

Prepare a one-page account brief. Cover the goal, what changed, open questions, risks, and the three next actions. Cite the message or file behind each important claim. Send the result only to me as a Word document.

For a recurring reporting job, start with business reporting automation or browse the scheduled task library.

Get your Deck address and use the first two weeks to compare real work: one follow-up, one long thread, and one report you usually rebuild by hand.