Platform

Domains, sending identities and account usage — shared by all three.

The foundation the other three sit on. A domain is verified once and can then send transactional mail, run campaigns and host mailboxes. Senders, API keys, plan limits and usage live here too.

Set these up once; everything else depends on them.

Guides

Start here. The reference tells you what the parameters are; these tell you what to do with them.

Managing domains and DNSSPF, DKIM, DMARC and MX — what verification actually checks.

Reference40 endpoints

Domains26

Add a sending domain, publish its DNS, and verify it.

GETList domains/api/v1/domains
POSTAdd a domain/api/v1/domains
GETRetrieve a domain/api/v1/domains/{domain}
GETStats (domain)/api/v1/domains/stats
POSTBulk Delete (domain)/api/v1/domains/bulk-delete
All 26 domains endpoints →

Senders8

Verified identities a message may be sent as.

GETList senders/api/v1/senders
POSTAdd a sending identity/api/v1/senders
GETRetrieve a sender/api/v1/senders/{sender}
PUTUpdate a sender/api/v1/senders/{sender}
PATCHUpdate a sender/api/v1/senders/{sender}
All 8 senders endpoints →

Account6

Organization usage, limits, API keys and dedicated IPs.

GETList API keys/api/v1/api-keys
GETGet dedicated IP status/api/v1/dedicated-ip
GETEntitlements (billing)/api/v1/billing/entitlements
GETSend Plan (billing)/api/v1/billing/send-plan
GETSubscription (billing)/api/v1/billing/subscription
All 6 account endpoints →

Other products

Email APISend transactional email and follow what happens to it.
MarketingCampaigns, contacts, lists and segments.
Email hostingMailboxes on your own domain, and the webmail that reads them.