Front vs Nylas: When to Use Each

Command references used in this guide: nylas email list, nylas email send, and nylas email threads.

What is the difference between Front and Nylas?

Front is a software-as-a-service product: a polished web and mobile app where teams share inboxes, assign conversations, and reply together, sold per user seat. Nylas is a developer API: it provides programmatic access to email, calendar, and contacts so you can build inbox features into your own application. Front is something your team uses; Nylas is something you build with.

Front does publish a platform API for extending the app, which is why the comparison comes up. But that API is shaped around Front's own product model — conversations, channels, and tags inside Front. Per the Front developer docs, it's for integrating with Front, not for building a separate product. Nylas, by contrast, is the inbox backend itself, normalized across six providers.

What does Front do well?

Front is excellent as an out-of-the-box collaborative inbox. Support, sales, and operations teams get shared inboxes, assignment, internal comments, SLA rules, and analytics without building anything — they sign in and work. For a company that wants its staff handling customer email together, Front is a complete answer the day you buy it.

That completeness is also the boundary. Front is the destination for your own team's work; it isn't infrastructure you embed in a product sold to thousands of end users who each connect their personal inbox. Pricing is per seat, which suits internal teams but doesn't map to a multi-tenant app where every customer brings their own mailbox.

# Front — its API extends the Front app (conversations, channels, tags)
curl -s "https://api2.frontapp.com/conversations" \
  -H "Authorization: Bearer $FRONT_API_TOKEN"

# This reads conversations inside Front, not arbitrary user mailboxes —
# it's for integrating with the product, not building a separate one.

How do Front and Nylas compare?

The table compares both across seven dimensions. Front leads as a finished collaborative product; Nylas leads as embeddable, multi-tenant infrastructure. The overlap is email handling — Front inside its own app, Nylas inside the app you build.

When should you use Nylas instead?

Reach for Nylas when you're building the inbox experience rather than buying one. If your product lets each customer connect their own mailbox — a CRM, a scheduler, an AI assistant — you need a backend that reads and sends across providers under your own UI, not a separate app your users log into. Nylas connects each user over OAuth and returns one normalized schema across six providers.

The CLI shows the backend surface in one session. After a single login you list threads and send from the connected address in about two minutes, with JSON output for scripts and AI pipelines. That's the raw material you assemble into your own inbox UI — something Front's product-shaped API isn't designed for.

# Nylas — the inbox backend you build your own UI on
nylas auth login --provider google
nylas email threads list --json --limit 10
nylas email send --to customer@example.com \
  --subject "Re: your request" --body "Replying from the connected inbox."

Which should you choose?

Choose Front when you want a finished shared inbox for your own support or sales team and you're happy to pay per seat — it works the day you buy it. Choose Nylas when you're building inbox, calendar, or scheduling features into a product you sell, where every customer connects their own mailbox. The two aren't rivals so much as different layers: Front is an app; Nylas is the API an app like Front is built on.

The deciding question is build vs buy. Buying a team inbox? Front. Building one into your product? Nylas. See the best email API for developers for where the sending-focused vendors land.

Next steps

• Shared mailbox from the CLI — work a team inbox programmatically
• Email threads from the CLI — read and reply within conversations
• CRM email workflows — log real threads into your own product
• Best email API for developers — the email vendor options compared
• Zapier Email vs Nylas — no-code automation vs a developer API
• Merge.dev vs Nylas — back-office unified API vs inbox unified API
• Nango vs Nylas — managed OAuth toolkit vs finished inbox API
• Full command reference — every flag and subcommand documented