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Nylas Financial Model

Dev Tools Startup Financials (Free Excel Download)

API infrastructure platform that gives developers unified access to email, calendar, and contacts data plus workflow automation components, enabling rapid productivity-app development.

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About this model

Nylas provides a Universal Data Engine for email, calendar, contacts, intelligence, and embeddable communication workflows. Its connectivity layer abstracts Gmail, Outlook, Exchange, and other providers; customers can add entity detection, sentiment, scheduling, composing, and automation without stitching together separate point tools.

Revenue is usage-based SaaS, driven by API requests, processed data, connected accounts, and unique people. More than 700 B2B software companies use it across CRM, recruiting, sales automation, real estate, productivity, HR, fintech, legal tech, and communications. The deck does not disclose price tiers or ARR.

Nylas handled more than two billion daily API requests, 20TB of daily data, and 171 million connected people. It added 47,386 developer signups, with new ARR growing more than threefold. The model should build customer adds, accounts, API volume, infrastructure cost, expansion, churn, and NRR.

A turnkey financial model

Live formulas, no hardcoded values

Outputs are driven by live formulas, so the workbook updates from its assumptions instead of relying on hardcoded results.

All assumptions in one tab

Inputs are clearly marked in the Assumptions tab and separated from calculations, making it clear what to change and what to leave intact.

Statements always balancing

For integrated-statement models, the balance sheet, cash flow, and supporting schedules tie through properly.

Distinct schedules for clarity

Debt, working capital, taxes, and cash flow can get messy quickly. We group calculations in clear schedules, not across disconnected tabs.

No hidden macros or external links

There are no unexplained external workbook links or macros to undermine auditability or portability.

Changes flow through the model

Update a key driver and see the impact carry through the forecast, financing, and return outputs. We never use hardcoded numbers in formulas.

About Nylas

nylas.com
Read the pitch deck
Nylas pitch deck cover
View on makeslides.com
Total raised
$120.0M
Funding round
Series C
Founded
2021
Category
Dev Tools
Customer
B2B
Geography
US-first

How to build a detailed financial model for Nylas

A complete walkthrough of the business, drivers, and assumptions behind the downloadable Nylas model - distilled from its pitch deck and publicly available information.

Product & value proposition

Nylas provides a Universal Data Engine - a three-layer platform:

  1. Connectivity & Abstraction - single-point integration to email, calendar, contacts across all providers (Gmail, Outlook, Exchange, etc.)
  2. Intelligence & Insights - entity detection, content categorization, sentiment analysis extracted from communications data
  3. UX Components & Workflows - embeddable front-end scheduler/composer widgets; workflow automation triggers

Key positioning: developers currently stitch together many point solutions (Twilio for comms, Clearbit for context, UiPath for automation, etc.); Nylas replaces them with a single platform. Aspires to be the "abstraction layer" alongside Twilio, Stripe, and Plaid.

Target buyers: VP Engineering (scalability/delivery), Developers (ship speed), Head of Product (user delight), CEO/Exec (revenue & market position).

Market

TAM shown as an expanding series tied to platform scope:

  • 2019 (Connectivity only): ~$17B TAM
  • 2020 (+ Intelligence): ~$35B TAM
  • 2021 (+ UX Components / Workflows, multi-vertical): ~$60B TAM
  • 2022–2023 (omni-channel, all industry use cases): $200B TAM

Core verticals initially: Sales/Marketing, HR/Recruiting, Real Estate, Customer Success, Productivity. Expansion verticals: Insurance, eCommerce, Healthcare, Logistics.

SAM and SOM not broken out. Market sizing methodology not disclosed (likely vendor-defined top-down).

Macro hook: $2.86 trillion lost in 2020 on repetitive tasks in the US alone.

Revenue model

  • Model type: Usage-based SaaS. Customers pay based on API consumption (volume of requests, data processed, number of connected accounts / unique people).
  • Channels: Direct sales to software companies (B2B2C deployment pattern - Nylas's customers are the dev teams; end users are their customers' employees/users).
  • Customer segments: 700+ B2B software companies across CRM, ATS, Sales Automation, Real Estate, Productivity, HR Tech, FinTech, LegalTech, Cloud Communications, etc.
  • No ARR figure, ARPU, or specific pricing tiers disclosed in deck.

Traction & metrics

All figures are trailing-12-month as of ~Q1 2021 (deck appears to be ~mid-2021 fundraise based on chart axes).

MetricValueGrowth
Total customers700+-
New customers (T12M)2X YoY-
New ARR (T12M)3X+ YoY-
Average customer revenue ramp (12-mo cohort)2X YoY-
Developer sign-ups (cumulative)+47,3867X+ YoY
API requests daily2B+-
Data processed daily20TB+-
Unique people connected (end-users)171M+-

Chart detail from slide 4 image: New Customers bar chart shows progression from Q1 2019 through Q2 2021, reaching ~700 cumulative by Q2 2021. New ARR chart shows steep inflection in Q4 2020–Q1 2021. Developer Sign-Ups chart similarly inflects sharply in Q4 2020–Q1 2021.

Revenue ramp chart (slide 13): average customer reaches ~200% of Month-1 ARR by Month 12, starting near 100% - demonstrating strong net expansion within cohort.

Market adoption: "30% of all apps accessing Gmail data were built on Nylas in 2020."

Unit economics

Churn (% of ARR):

  • Q1 2020: -0.8%
  • Q2 2020: -1.7%
  • Q3 2020: -1.1%
  • Q4 2020: -1.0%

Churn is split between "Regrettable" (pink) and "Unavoidable" (blue) categories; regrettable churn appears lower than unavoidable across all quarters visible in the image.

Net Revenue Retention: Implied >100% (average customer reaches 200% of Month 1 ARR by Month 12; expansion drivers include product upsell, user-base growth, cross-BU expansion). No explicit NRR % stated.

Competition / moat

Competitive framing: Nylas positions against a fragmented set of point solutions (Kong/built-in-house for connectivity, Clearbit/Bombora for context, Tray.io/Workato for integration, UiPath/Automation Anywhere for automation, Twilio/Agora/Sinch for comms, Figma/built-in-house for interface).

Moat claims:

  • "Built the hard thing first" - Universal Data Engine solves data structuring/contextualization that others avoided.
  • Network effects implied by 171M+ connected end-users and 2B+ daily API calls creating data flywheel.
  • Platform lock-in: customers build their products on Nylas; switching cost is high once embedded.
  • Market position: 30% of Gmail-connected apps built on Nylas in 2020.
  • Named alongside Twilio, Stripe, Plaid as "abstraction layer" incumbents.

No direct named competitor analysis table in deck.

Team & funding ask / use of funds

Team (key hires):

  • Gleb Polyakov - CEO & Co-founder (prev. Oracle)
  • Christine Spang - CTO & Co-founder (prev. Cloud Elements)
  • Lou Salfi - CRO (prev. Birdeye)
  • Waifa Chau - CFO
  • David Ting - SVP Engineering (prev. Flexport)
  • Mike Pfister - VP Product (prev. Gest)
  • Tasia Potasinski - VP Marketing (prev. Autodesk)

Advisors (notable): Tony Fadell (CEO, Nest), John Chambers (Cisco/JC2 Ventures), Allan Leinwand (SVP Eng Slack, CTO ServiceNow), Marc Boroditsky (CRO Twilio), Pankaj Patel (Cisco).

Board: 8VC, Scaleup Ventures, Spark Capital.

Funding ask / use of funds: Not explicitly stated in deck. Use-of-funds slide (slide 16) is framed as "Investing in Growth" across four pillars: Product (accelerate innovation), GTM (scale & staff, new markets/verticals), Momentum (capture market window), M&A (inorganic growth via Universal Data Engine interoperability).

No dollar raise amount disclosed.

Recommended financial model

  • Archetype + why: Usage-based SaaS ARR model with cohort expansion layer. Nylas sells API infrastructure priced on consumption (API calls, connected accounts). Revenue = number of customers × average contract value, but with strong expansion dynamics - the cohort ramp to 200% of Month 1 ARR by Month 12 means new ARR model must layer expansion on top of new logos. This is closer to a usage-based ARR build than a pure seat-based SaaS.
  • Forecast horizon & granularity: 5 years (2021–2026), quarterly for Years 1–2, annual thereafter. Monthly cohort layer for first 24 months to capture revenue ramp curve.
  • Key drivers & assumptions:
DriverValue
Starting customer count700
New customers YoY growth rate2X (~100%) in T12M; decelerates to ~50% → ~30% → ~20% → ~15% in Y2–Y5
Revenue ramp curveCohort reaches 200% of Month-1 ARR by Month 12, then continues expanding
Net Revenue Retention (NRR)~120%–130% implied by ramp curve and <2% quarterly churn on ARR
Gross churn (% ARR per quarter)~1.0%–1.7% per quarter (average ~1.1%)
Gross margin65%–75%; typical for API infrastructure (hosting, bandwidth, data-processing costs)
S&M as % of revenue35%–45% in early years (developer-led + enterprise GTM mix), declining to ~25% at scale
R&D as % of revenue25%–35%; platform company investing in data engine expansion
G&A as % of revenue10%–15%
New ARR growth rate3X+ YoY in T12M
Developer sign-up funnel conversion~1.5% of developer sign-ups convert to paying customers (standard PLG benchmark)
TAM expansion milestones$17B → $35B → $60B → $200B per roadmap
  • Scenarios (Base / Bull / Bear - which variables flex):
  • Bull: NRR stays at 130%+, new customer growth maintains 80%+ YoY for 3 years, gross margin expands to 78% as infrastructure costs amortize, M&A adds inorganic ARR.
  • Base: NRR ~120%, new customer growth decelerates from 100% → 50% → 30% → 20%, gross margin 70%.
  • Bear: Churn uptick (regrettable churn increases, pushes NRR to ~105%), new customer growth slows to 20% by Year 3, margin pressure from competition/enterprise support costs.
  • Required sheets / outputs:
  1. Assumptions - all drivers with toggle for Base/Bull/Bear
  2. Customer Cohort Model - monthly vintage table, ramp curve applied, expansion and churn modeled quarterly
  3. ARR Bridge - starting ARR + new logo ARR + expansion ARR − churn = ending ARR (quarterly)
  4. P&L - revenue, COGS, gross profit, S&M/R&D/G&A opex, EBITDA, net loss
  5. Usage Metrics Dashboard - API requests, data volume, connected users (non-revenue operating KPIs)
  6. Waterfall / Funnel - developer sign-ups → trials → paying customers
  7. Market Penetration - TAM at each layer vs. Nylas revenue/ARR
  8. Valuation - ARR multiple benchmarking (comparable: Twilio, Plaid, Merge.dev era comps); DCF optional

Frequently asked

Is the Nylas financial model free?+

Yes. The Nylas model is a free Excel (.xlsx) download with live formulas. Sign up with your email and the workbook is yours to keep, review, and edit.

What's included in the model?+

A 5-year monthly forecast with P&L, cash flow and runway, valuation (exit multiple plus a DCF cross-check), MOIC/IRR returns, and unit economics, with live formulas throughout.

How was this model built?+

It was built from Nylas's pitch deck and publicly available information, then structured to investment-banking standards as a fully editable Excel model.

Can I change the assumptions?+

Yes. You can change assumptions and the live formulas will recalculate in the downloadable Excel model.

Have more financial modelling questions? Contact us

Alex Tapio, ex-Deloitte financial modelling expert

Created by ex-finance professionals

Hey, I’m Alex and I created Finamodel.

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