Fundamentals
What Is a Double Opt-In Introduction?
A double opt-in introduction means the connector checks with both people before making the connection, so neither side is put on the spot, and the trust of all three parties stays intact.
The definition
A double opt-in introduction is a professional introduction where the connector confirms that both people want to be connected before making the introduction. The connector first checks with the person being requested ("would you be open to meeting someone like this?"), and if the answer is yes, also confirms that the requester’s message is relevant and appropriate. Only when both sides have opted in does the actual introduction happen.
The term was coined by Fred Wilson, the venture capitalist at Union Square Ventures, in a post on his blog AVC in 2009. Wilson argued that no introduction should happen without the consent of both parties: not as a formality, but as the single rule that protects the connector’s credibility and keeps introductions genuinely valuable.
Why it is the professional default
Without a double opt-in, an introduction can feel like an ambush. The recipient, often a busy decision-maker, suddenly has an unknown person in their inbox because a mutual contact connected them without asking. That puts them on the spot: ignoring the message is awkward; responding takes time they didn’t plan for.
That awkwardness reflects back on the connector. Every introduction you make is a small withdrawal from the trust you’ve built on both sides. A double opt-in makes sure you’re only spending that trust when the connection is genuinely wanted, which is what keeps your introductions worth giving.
The 3-step mechanics
The process is simple in practice:
- Check the requester. Before agreeing to make the introduction at all, confirm that the person asking has a clear, specific reason for wanting the connection, and that you’re genuinely comfortable vouching for them.
- Check the recipient. Reach out to the person being requested before connecting them. Give enough context ("someone I know is doing X and wants to explore Y with you. Would you be open to a quick intro?") so they can make an informed decision. Give them an easy graceful out.
- Connect when both say yes. Only once both sides have confirmed do you make the actual introduction, typically a short email or message with both parties on the thread, explaining who each person is and why you’re connecting them.
The easiest way to set this up is to ask the requester to write a short forwardable blurb: a paragraph you can paste verbatim when checking with the recipient. It covers who they are, why the connection is relevant to the recipient specifically, and what they’re looking to discuss. That way the recipient hears the ask in the requester’s own words, and you’re not putting words in either party’s mouth.
When a single opt-in is acceptable
Double opt-in is the default, but it isn’t always necessary. A single opt-in (checking with only one side) can be appropriate when:
- You know both people extremely well and the connection is clearly expected.
- The recipient has previously expressed they’d welcome introductions of this type (some investors and advisors, for example, explicitly say they’re open to warm inbounds from specific networks).
- The introduction is social rather than professional, and both parties already know of each other.
In any situation where you’re uncertain, default to double opt-in. The risk of skipping it (an awkward interaction, a favour spent, a relationship strained) is almost always higher than the few minutes the check takes.
How LetsBridge bakes consent into introductions
LetsBridge is built around the double opt-in at a structural level. When a business requests an introduction, the connector, a trusted networker who genuinely knows the decision-maker, checks with the recipient before connecting them. The introduction only proceeds once the decision-maker has said yes, which means every connection that happens on LetsBridge is a genuinely consented one.
That matters for the quality of the conversation that follows: when a decision-maker has agreed to an introduction, they’re actually expecting the message. The conversation starts with context and openness rather than the scepticism that cold outreach has to overcome. See how it works.
Related reading
For the full etiquette of making a great introduction, including the forwardable blurb and follow-up, see the art of a great introduction. For the practical guide to getting an introduction to the person you want to meet, see how to get a warm introduction to a decision-maker.
FAQ
Double opt-in introduction FAQs
What is a double opt-in introduction?
A double opt-in introduction is a connection where the introducer checks with both people before making the introduction. The connector first confirms the person being requested will agree to connect, then confirms the other side is open to hearing from them. Only when both sides say yes does the introduction happen.
Who coined the term "double opt-in introduction"?
The term was coined by Fred Wilson, the venture capitalist at Union Square Ventures, in a post on his blog AVC in 2009. He described the practice of checking with both sides before making any introduction as the professional standard that protects everyone involved.
What is the difference between a single and double opt-in introduction?
A single opt-in introduction means the connector only checks with one party, usually the person being introduced, before making the connection. A double opt-in means both sides have consented. Single opt-in can work when you know both people well and the relevance is obvious, but double opt-in is the default for professional introductions.
Do I always need a double opt-in before introducing two people?
Not in every situation. If you know both people extremely well and the connection is clearly valuable and expected, a single opt-in can be acceptable. But as a professional default, especially in business contexts or when introducing someone to a senior contact, the double opt-in protects everyone and prevents the introduction from feeling like an ambush.
How does LetsBridge use the double opt-in?
LetsBridge builds the double opt-in directly into its platform. When a business requests an introduction, the connector (networker) checks with the decision-maker before making the connection. The introduction only proceeds when the recipient has agreed, so no one is ever put on the spot, and the connector’s reputation is protected throughout.
Introductions where everyone has said yes
LetsBridge builds the double opt-in into every connection, so businesses reach decision-makers who are already open to the conversation.