Definition
Email partnership marketing is a strategy where two or more businesses collaborate on email campaigns to reach each others subscribers. Partners promote each others products, services, or content to their respective email lists, sharing the benefits of increased reach, credibility, and subscriber growth.
Partnership emails work because they leverage existing trust. When a brand recommends another brand to its subscribers, that recommendation carries more weight than a cold advertisement. Partnership marketing is one of the most cost-effective growth channels for email lists.
Types of Email Partnerships
| Type | Description | Example |
|---|---|---|
| Cross-promotion | Each partner promotes the other | Newsletter mention exchange |
| Co-branded content | Jointly create and share content | Co-authored guide to both lists |
| List swap | Exchange featured spots | "Recommended by our partners" section |
| Affiliate partnership | Commission-based promotion | Partner promotes your offer for a cut |
| Launch partnership | Joint product or event launch | Co-hosted webinar promoted to both lists |
| Sponsorship | One partner pays for placement | Paid mention in partners newsletter |
Average Benchmarks
| Metric | Cross-Promotion | Co-Branded | List Swap |
|---|---|---|---|
| New subscribers gained per send | 2-10% of partner list | 5-15% | 3-8% |
| Click-through rate | 3-8% | 5-12% | 2-6% |
| Partner email open rate | 15-30% | 20-35% | 15-25% |
| Long-term retention of acquired subs | 40-60% | 50-70% | 30-50% |
How to Run a Successful Email Partnership
- Choose complementary partners: Your partners audience should overlap with yours in interest but not in direct competition. A CRM tool and an email marketing tool are complementary. Two email marketing tools are competitors.
- Define clear value for both sides: Each partner should know exactly what they are giving and receiving. Subscriber count, email placement, and expected reach should be agreed before the campaign.
- Provide partner content guidelines: Share your brands tone, dos and donts, and key messaging points so the partner represents you accurately. Review the email before it sends.
- Track with UTM parameters: Use unique tracking links for each partner so you can attribute new subscribers and conversions accurately.
- Follow up with new subscribers: Subscribers acquired through partnership campaigns should enter a dedicated welcome sequence that references how they joined. Remind them why they signed up.
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Frequently Asked Questions
Look for businesses that serve the same audience with a different product or service. Recommended resources from your industry, complementary tools your audience uses, and businesses that have partnered with similar companies are good starting points.
Partnerships work at any list size as long as both partners bring comparable value. A list of 1,000 engaged subscribers can be more valuable than a list of 10,000 inactive ones. Focus on engagement rates and audience fit rather than raw subscriber count.
Yes, but both parties must ensure they have consent to share subscriber data. The safer approach is a cross-promotion where each brand sends to its own list rather than sharing subscriber data directly. Never share raw subscriber data without explicit consent.
Track new subscribers acquired, cost per subscriber (if paying), engagement rates of acquired subscribers after 30 and 90 days, and any direct revenue attributed to the partnership. Compare these metrics to your other acquisition channels.
Promoting a partner without vetting their quality. An email promoting a low-quality partner damages your credibility with subscribers and reduces the effectiveness of future promotions. Always test the partners product or service before promoting it to your list.