Docs
Rate limits
Guidance
Numeric rate limits are not published on this documentation site. For high-volume or burst traffic, confirm capacity and recommended pacing with sales.
Practical tips
Use SEND_BULK_SAME or SEND_BULK_DIFFERENT instead of many single calls when sending campaigns.
Space automated retries and avoid tight loops on failure responses.
Create account
Sign up in the portal and get your API key — username is your email, password is the key.
Open portal — get API key