Flowium
Retention agency covering email, SMS, and a wide set of adjacent messaging channels.
- Founded
- 2017
- Website
- flowium.com
Flowium's range of channels is the widest on this list: beyond email and SMS it runs push, WhatsApp, RCS, Instagram DM automation, and direct mail. That breadth is useful for brands whose customers are reachable somewhere other than the inbox, and less relevant for brands that just need Klaviyo run well.
Where Flowium appears
- The Best Email Marketing Agencies for Ecommerce
Best for brands whose customers are reachable outside the inbox
- The Best Klaviyo Agencies for Ecommerce
Best for Klaviyo plus the channels that sit next to it
- The Best SMS Marketing Agencies for Ecommerce
Best for brands wanting SMS alongside WhatsApp, RCS, and push
Services
- Email marketing
- SMS marketing
- Push notifications
- WhatsApp and RCS
- Instagram DM automation
- Direct mail
- Deliverability
Verticals
- Ecommerce
- Beauty
- Fashion
- Housewares
- Sporting goods
- Automotive
Named clients
- Dr Squatch
- True Classic
- Balsam Hill
- RSVLTS
- Last Crumb
- Sky Zone
As published by the agency.
Stated figures
- 1,000+ brands served since 2017
- $1B+ in client revenue attributed
- 2025 Inc. 5000 honoree
- 4.9 Clutch rating
Self-reported by the agency and not independently verified.
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