Double opt-in means both parties agree to connect before any conversation begins. Instead of one person cold-messaging another, both sides actively choose to engage.
This is the foundation of how Fluum’s warm introduction process works — and why it delivers 50-60% response rates compared to 2-5% for cold outreach.
How double opt-in works on Fluum
| Step | What happens |
|---|---|
| 1. You find a match | Fluum shows you an AI-matched prospect with context on why they’re relevant |
| 2. You request an intro | Click “Get Intro” and Fluum sends a personalised intro request |
| 3. Prospect reviews | They see your profile, services, and why you want to connect |
| 4. Prospect opts in | If interested, they accept the introduction |
| 5. Shared thread created | Fluum creates a chat or email thread with both of you included |
Only when both parties have agreed does the conversation begin.
Why double opt-in matters
1. Higher response rates
When someone has already agreed to connect, they’re far more likely to engage. You’re not interrupting — you’re starting a conversation they’ve chosen to have.
2. Better conversation quality
Both parties enter the conversation with context and intent. There’s no awkward cold opener or “just checking in” follow-ups.
3. No spam risk
Because prospects opt in, you’re never sending unsolicited messages. This protects your reputation and avoids the domain and deliverability issues that plague cold email.
4. Builds trust from the start
The prospect knows you’re not mass-blasting everyone. The introduction is personalised and they’ve chosen to engage — which sets a better tone for the relationship.
Double opt-in vs cold outreach
| Cold outreach | Double opt-in (Fluum) |
|---|---|
| Recipient didn’t ask to hear from you | Both parties agreed to connect |
| 2-5% response rate | 50-60% response rate |
| Often feels intrusive or spammy | Feels natural and respectful |
| Risk of domain blacklisting | No spam risk |
| Requires high volume to get results | Quality over quantity |
Common questions
What if the prospect doesn’t accept? Not everyone will opt in — that’s expected. Focus on consistency: if 40-50% respond, you’re still converting at 10x the rate of cold outreach.
How long does opt-in take? Most prospects respond within 24-72 hours. Fluum notifies you when they accept.
Can I follow up if they don’t respond? Fluum handles the intro request. If they don’t opt in, it’s best to move on to other matches rather than chasing.
Summary
Double opt-in means both you and the prospect agree to connect before any conversation starts. This is why Fluum’s warm introductions convert at 40-50% — prospects have already said yes before you even talk.
No cold pitching. No spam. Just conversations with people who want to hear from you. Get started for free here.
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