Letter

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Letter

Email automation for B2B SaaS

From your app to their inbox.

Letter turns what people do in your product into perfectly-timed lifecycle email. Drip campaigns that trigger on real events, plus broadcasts when you have news. No marketing-tool bloat.

Track
Drop in the SDK and send product events with a couple of function calls. We figure out the rest.
Build
Design event-triggered flows on a visual canvas. Branch on properties, wait, retry, skip.
Deliver
SPF, DKIM, throttling, suppression, bounces, opens. Your mail lands in the inbox. Quietly.

Free up to 1,000 contactsNo credit card~10s to install