Deliverability
Providers using this tag (23)
Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.
Exemplar 8 Complete, well-documented, and agent-ready
Strong 9 Solid coverage with minor gaps
Developing 4 Usable, with meaningful gaps to close
Thin 1 Limited public surface area
Emerging 1 Early or largely undocumented
APIs with this tag (16)
Ranked by the provider's API Evangelist rating — the Kin Score is scored per provider, not per API, so every API of a provider shares its band. How the rating works →
Exemplar 4 Complete, well-documented, and agent-ready
Mailboxlayer Email Validation APIREST/JSON API for real-time email validation: syntax check, typo suggestions, MX-record lookup, SMTP verifi...lemlist Deliverability Alerts APIThreshold alerts on deliverability metrics - create, read, update and delete.lemlist Email Accounts APIConnect, test and disconnect custom SMTP/IMAP sending accounts.lemlist lemwarm APIlemwarm mailbox warm-up - start, pause, and read or update warm-up settings per mailbox.
Strong 6 Solid coverage with minor gaps
Snov.io Email Warm-up APICreate and manage email warm-up campaigns to improve deliverability scores. Supports full CRUD operations o...Encharge Email Domain Settings APIThe email settings API from Encharge — 5 operation(s) for adding and verifying sending domains.Smartlead Email Warmup APIEndpoints for managing Smartlead's deliverability warmup engine — enabling warmup per mailbox, configuring ...NeverBounce API v4RESTful JSON API for email verification. Provides single email verification (`/single/check`), bulk job ver...Pabbly Email Verification APIREST API for Pabbly Email Verification. A single operation, POST /email-lists/verify-single, returning a de...Kickbox Email Verification APIREST API for verifying the deliverability of email addresses in real time. Returns a result (deliverable, u...
Developing 3 Usable, with meaningful gaps to close
Address Validation APIValidate and standardize addresses, returning deliverability verdicts, geocodes, and address component deta...Gmail Postmaster Tools APIGather statistics on bulk emails sent to Gmail users including spam reports and delivery errors.CommsHarbor APIREST/HTTP API (OpenAPI 3.1) for transactional email, deliverability, sending domains, permission-based mark...
Thin 2 Limited public surface area
Emerging 1 Early or largely undocumented
Companies reaching this through an API (6)
These companies publish an API, specification or operation carrying “Deliverability” but do not classify their business under it. Listed unranked and kept out of the count above, because one tagged operation is not a statement about what a company does.
Score breakdown
Frequency
43.6
log-scaled weighted occurrences
Breadth
0.6
spread across providers
Quality lift
67.7
mean composite of providers using it
Cohesion
6.3
strength of nearest seed neighbor
Related tags
Email Verification 10 co-occurrences
SMTP 9 co-occurrences
Email Validation 7 co-occurrences
Transactional Email 10 co-occurrences
Email Marketing 6 co-occurrences
Email 15 co-occurrences
Data Quality 5 co-occurrences
Campaigns 7 co-occurrences
Where this tag comes from
Provider tag23
Api tag16
Openapi tag1
Openapi op tag4
Work with this as data
Every tag here is available over the APIs.io API and to AI agents over MCP.