Transactional mail goes out over a REST API or SMTP relay; broadcasts and contact Audiences live in the dashboard. Contacts carry properties, segments and topics, with unsubscribes handled for you.
Collection №03
7 best email sending platforms in 2026
Platforms for getting transactional and marketing email delivered.
Two products sit under one brand: an Email API that sends over SMTP or a web API, and Marketing Campaigns with design and code editors, segmentation and A/B testing.
Aimed at application mail: receipts and password resets over a REST API or SMTP relay, with event webhooks and delivery logs. No campaign builder, no contact lists.
Broadcasts and lifecycle workflows sit alongside a transactional API in one account, with official SDKs and integrations for Supabase, Clerk, Stripe, Segment and PostHog.
Campaigns, automation and application mail run from a single account, with SMS, WhatsApp, push and live chat on the same platform.
Sending and receiving infrastructure reached over SMTP or the AWS SDKs, with no template editor or subscriber management. New accounts start sandboxed until AWS approves production access.
Sends application email like password resets and notifications over an API or SMTP, and runs broadcast traffic on parallel infrastructure with its own IP ranges so the two never mix.
