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CBD brands face different retention challenges than conventional ecommerce businesses. Restrictions on certain paid advertising campaigns, product claim rules, and email platform policies make first-party customer relationships especially valuable. Email marketing helps brands develop those relationships through educational content, automated follow-up, and repeat purchase campaigns, while performance varies by business and customer base.
Finding an email marketing agency for cannabis brands that understands CBD's unique regulatory landscape is critical. Generic agencies often lack experience with FDA product claim rules, platform advertising restrictions, and the compliance-aware copywriting these products require. This guide evaluates agencies based on documented CBD client results, compliance expertise, and platform partnerships.
Traditional ecommerce brands can rely on multiple paid advertising channels for customer acquisition. CBD brands face different constraints. Platform advertising restrictions, payment processor limitations, and FDA claim regulations create barriers that require alternative growth channels.
Email marketing solves this problem by building an owned audience under direct control. Unlike rented ad inventory that can be affected by policy changes, email lists remain accessible for ongoing customer communication. This stability makes email foundational for sustainable CBD marketing.
The compliance challenges extend beyond advertising. CBD email campaigns must navigate:
Agencies specializing in CBD understand these constraints and build email retention marketing strategies that drive revenue without triggering compliance issues.

Herb Agency combines email audience development with access to the Herb.co media ecosystem, giving CBD and hemp brands opportunities to coordinate educational content, editorial distribution, and customer retention within a broader growth strategy.
The key differentiator is the Herb.co media property. Herb can amplify CBD brands through editorial content, buying guides, and social distribution to 4M+ followers. This editorial reach supports email list growth, brand awareness, and customer education simultaneously.
Herb Mail addresses a critical challenge for CBD ecommerce: converting anonymous website visitors into subscribers. With iOS privacy changes limiting retargeting and third-party cookies declining, first-party data becomes essential. Herb Mail identifies visitors in real time and syncs them to email service providers through consent-based opt-in mechanisms.
Herb Agency's CBDistillery campaign collected 60,364 email contacts, achieved a 50.55% open rate, and generated more than $200,000 through Herb Mail. The DeltaExtrax campaign collected 55,524 email contacts and generated more than $190,000 through Herb Mail, alongside over $400,000 in influenced orders across the broader campaign.
The Sunmed campaign recorded an increase of 15,076 in monthly sales, while Herb Mail contacts generated $55,695 in placed-order value. The email program also achieved a 52.86% overall 30-day open rate and a 7.65% click rate.
For CBD brands seeking more than email-only support, Herb Agency's services include compliant paid media, SEO, content creation, and analytics under one unified strategy.
The Email Marketers focuses on retention marketing for ecommerce brands, including CBD and cannabis clients. The agency's services center on email and SMS marketing rather than paid advertising or SEO.
The Email Marketers has served CBD, THC, and cannabis-adjacent brands since 2019. The agency holds Klaviyo Partner certification and focuses on retention channel performance. Its service model assigns account team members to campaign planning and execution.
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Forge Digital Marketing provides lifecycle marketing services for CBD and cannabis brands, covering brand positioning, customer acquisition, and retention. The agency offers email marketing alongside paid media and SEO services.
Forge reports having launched or scaled 40+ cannabis and CBD brands. The agency's partnership with SpringBig supports SMS marketing for cannabis and CBD businesses. Its service offerings also include brand positioning, packaging strategy, and performance marketing.
Cannascale works with hemp, CBD, and cannabis brands, including startups and established businesses. The agency holds Klaviyo Partner certification.
Cannascale focuses on marketing services for hemp, CBD, and cannabis businesses. The agency reports having worked with 100+ brands in the cannabis industry. Its client acceptance model limits the number of new engagements it takes on at a time.
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Growth Gurus approaches CBD email marketing as part of broader wellness brand marketing. The agency provides Klaviyo email marketing services and customer data platform integration.
Growth Gurus uses educational content and customer engagement campaigns in its approach to CBD email marketing. The agency also serves businesses in the broader health and wellness sector.
Cannabis Creative Group has served 250+ clients across the U.S., Canada, Mexico, and Europe since its founding in 2017. The agency has published a guide examining which email marketing platforms permit cannabis and CBD content.
Cannabis Creative Group addresses email service provider policies affecting cannabis and CBD businesses. Its services cover email marketing alongside branding, web development, and SEO.
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Hybrid Marketing Co. provides B2B and B2C marketing services for cannabis businesses, including cultivators, processors, and direct-to-consumer brands. Its services cover marketing strategy and execution across business and consumer audiences.
Hybrid Marketing Co. works with cannabis businesses that operate across wholesale and direct-to-consumer channels, including vertically integrated operations. Its B2B services address marketing requirements for cultivators, processors, and other businesses serving commercial customers.
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Icarus Digital Marketing was founded in 2016 and reports having served 200+ restricted-category brands. The agency provides paid media services for restricted-product businesses, including Meta advertising campaigns that require attention to platform compliance policies.
Icarus Digital Marketing offers email retention services alongside its paid acquisition offerings. The agency expanded its focus beyond CBD in 2024 to include nicotine, wellness, and other restricted categories.
Herb Agency combines regulated-industry expertise, first-party data strategies, and owned media distribution to help CBD brands grow their email audiences and generate measurable revenue.
CBD brands seeking to expand their email audiences and improve customer retention can book a strategy call with Herb Agency to explore strategies aligned with their marketing goals.