Lettermail vs Zapier
Lettermail vs Zapier, compared side by side on 12 data points: what each one does, how big it is, what it has raised, the tech running each site, and what users report. We score both out of 100 on traction, team and visibility: Lettermail is on 18/100 and Zapier on 77/100.
Where each one leads
Lettermail
Leads on none of the measures we hold for both companies.
Zapier
- our overall score: 77/100 against 18/100
- headcount: 1,447 against 8
- LinkedIn following: 360,432 against 5,931
At a glance
| Measure | Lettermail | Zapier |
|---|---|---|
| What it is | An AI-first email workspace that automates busywork, helps achieve inbox zero, and maintains a human touch. | Zapier automates workflows by connecting web applications, enabling users to move data and automate tasks without coding. |
| Category | Email Productivity, AI Email Assistant, Workflow Automation, Inbox Management | Workflow Automation, Application Integration, Low-Code Development, No-Code Development |
| Sells toBusiness model | B2B | B2B |
| Offering | Software | Platform |
| Founded | Not published | 2011 |
| Headquarters | Not published | San Francisco, United States |
| Status | Active | Active |
Size, funding and growth
| Measure | Lettermail | Zapier |
|---|---|---|
| Employees | 8 | 1,447 |
| Headcount growthLast 12 months | Not published | +17.9% |
| Total funding | Not published | $1.3B |
| Latest round | Not published | Series C |
| Valuation | Not published | $5.0B |
| LinkedIn followers | 5,931 | 360,432 |
StartupHub scores
Our own 0-100 ratings. They measure company strength and site quality, not which product suits you.
| Measure | Lettermail | Zapier |
|---|---|---|
| StartupHub scoreOur 0-100 rating | 18/100 | 77/100 |
| Traction | 10/100 | 60/100 |
| Team | Not published | 70/100 |
| Community | Not published | 8/100 |
| Search visibility | 31/100 | 66/100 |
| Quality | Not published | 87/100 |
| Agent readinessHow well an AI agent can read and act on the site | C (64/100) | B (71/100) |
| Domain ratingLink authority, 0-100 | Not published | 91/100 |
Technology
Detected on each public site, so it reflects the marketing stack as well as the product.
| Measure | Lettermail | Zapier |
|---|---|---|
| Hosting | Not detected | Vercel |
| CDN | Cloudflare | Vercel |
| CMS | Framer | Not detected |
| Frameworks | Not detected | Next.js |
| Analytics | Not detected | Google Tag Manager |
| Support stack | Not detected | Zendesk |
Lettermail vs Zapier: common questions
Which is better, Lettermail or Zapier?
On our 0-100 score Zapier rates higher (77/100 against 18/100). The score weights traction, team, visibility and profile completeness, so it reflects company strength rather than which product suits you. We compare the two on 12 data points above: read the rows that match what you are buying for.
How do Lettermail and Zapier compare on the numbers?
Zapier leads on our overall score (77/100 against 18/100), headcount (1,447 against 8), LinkedIn following (360,432 against 5,931).
Read the full Lettermail review and pricing or the Zapier review and pricing. You can also browse other Lettermail alternatives we track.

