Zoho ZeptoMail

29/100

Transactional-only email from Zoho: PAYG credits, no monthly base fee.

zoho.com

// scorecard · 29/100

verified 1mo ago

methodology →

Agent-readiness11/35

Agent registration (api_key)6/9

Public API5/5

OpenAPI spec0/9

MCP server0/9

llms.txt0/3

Reliability & performance0/15

Actively maintained—

Production-ready0/4

Updated recently—

Pricing0/13

Itemized public pricing0/6

Free tier / trial0/4

Free-tier generosity—

Docs & DX4/12

Docs quality—

Public API2/2

Quickstart / examples2/2

Security & compliance10/12

SOC 26/6

ISO 270012/2

GDPR0/2

Security / trust page2/2

Openness4/10

Open source0/6

Open / un-gated API4/4

Company maturity0/3

Company size—

Years operating—

// rankings · cost per standard workload

#15 in Transactional Emailnot comparable

Pricing model documented (1 credit = 10k emails) but no USD figure on the official page today (new pricing effective Jul 2026); prior ~$2.50/credit unverifiable

zoho.com/zeptomail/pricing

// overview

ZeptoMail is an SMTP relay and transactional email sending API for reliable delivery of emails such as welcome emails, OTPs, and invoices. It supports plug-and-play SMTP or REST API integration, with average delivery in milliseconds, detailed deliverability reports, and monitoring via separate Agents. It is powered by the creators of Zoho Mail and includes customer testimonials on high deliverability and easy migration.

Best for: Transactional email delivery for apps and legacy systems

// security & compliance

✓ SOC 2✓ ISO 27001✗ GDPR✗ HIPAA

// features