Transactional first
Receipts, auth, and shipping events get their own streams so a campaign never blocks a password reset.
Email gives you sending infrastructure, templates, and reputation under one operator. Transactional streams stay isolated from campaigns. Domains, alignment, and suppression are first-class. Use it as the mail layer for Host, WooCommerce, and custom apps from Forge — or as a standalone platform.
Built for
Product teams, operators, agencies sending on behalf of brands
In the product
Domain reputation
SPF, DKIM, and alignment are part of onboarding, not a weekend project after deliverability drops.
Lists without lock-in theatre
Segments, suppression, and exports you can actually leave with.
APIs for the rest of the stack
Send from WordPress, custom apps, and Host with the same authenticated interface.
Ready to launch? Get your stack running as one system. Speak to us about the right Gellum mix for your business.
Talk through a demo, a custom plan, or how Delivery Calculator, Business Hours, Email, Host, Studio, and Forge should sit in your operation.
Contact sales