I mapped the email patterns of 8,665 VC firms. 5 patterns cover 95% of them.
The single biggest leak in cold-email fundraising is reaching the wrong inbox.
A founder who sends 50 cold emails to info@ and hello@ addresses gets a reply rate around 2%. The same founder, same email body, sending to partner-direct addresses gets 8 to 15%. Five to ten times the conversion, with no other change.
The bottleneck for most founders is not knowing how to find the partner's address. It looks harder than it is. In our database of 8,665 active investor firms, just five email patterns account for roughly 95% of all firm addresses. Once you know which pattern a firm uses, you can synthesize any partner's email in under a minute.
This piece walks through the five patterns, the prevalence of each, the edge cases that bite founders at scale, and how to verify before sending.
The five patterns, ranked by prevalence
Across 8,665 firms in our database (a mix of tier 1 VCs, seed VCs, micro VCs, family offices, and angels), the email pattern distribution is consistent enough to memorize:
firstname.lastname@firm.com: roughly 60% of firmsfirstinitiallastname@firm.com(e.g.,jchen@firm.com): roughly 15%firstname@firm.com: roughly 10%, almost entirely at small or solo-GP firmsfirstnamelastname@firm.com: roughly 8%firstname_lastname@firm.com: roughly 5%
The remaining 2% is a long tail of unusual formats (initials, nicknames, custom legal names) where partner emails typically need to be looked up manually.
How prevalence breaks down by firm type
The pattern distribution shifts in predictable ways depending on who runs the firm.
Large institutional VCs (200M+ AUM, tier 1 brands): firstname.lastname dominates at roughly 75%. These firms typically have IT departments that standardized on the most professional-looking format. Sequoia, Andreessen Horowitz, Bessemer, and similar all use this.
Mid-stage seed VCs: more split. Roughly 55% firstname.lastname, 25% firstinitiallastname, 15% firstname, 5% other. The mid-tier is where you see the most variation.
Solo-GP funds and small angels: firstname dominates. About 40% of solo-operated funds use just first name. The reasoning is simple: when a fund has 1 to 3 partners, the address-collision problem doesn't exist, and the personal feel of julia@firm.com matters more than corporate formality.
Family offices: firstname.lastname is back to 65-70%, similar to large VCs. Family offices tend to inherit corporate IT setups from the family business and standardize early.
Recent vintage funds (closed in last 24 months): slightly more likely to use firstname.lastname (about 65%) than older firms. The pattern has been migrating toward firstname.lastname over the last decade as a standard.
Edge cases that bite founders at scale
Knowing the pattern is not enough. A handful of edge cases will trip you up if you batch-generate emails without thinking.
Two-word last names. Maria de la Opina runs into this. Her email could be maria.delaopina@, maria.dela_opina@, maria.de.la.opina@, or maria.opina@ (just the second word). In our data, the most common version is to concatenate without spaces: maria.delaopina@. Try that first, then the longer-form fallbacks.
Apostrophes. Dropped, every time. o'connor becomes oconnor. We have not seen a single firm in our dataset that preserves the apostrophe in an email address.
Hyphens. Kept. maria-jose@ stays maria-jose@. This catches founders who try to drop hyphens by analogy with apostrophes.
Accented characters. Stripped. José becomes jose. Müller becomes muller. Universal.
Same first name at the same firm. When two partners share a first name (Sarah Chen and Sarah Park at the same firm), the firm usually switches to first initial last name only for the conflict (schen@ and spark@), with everyone else still on firstname.lastname. This is the most error-prone pattern because it does not apply uniformly.
Suffix patterns. Some firms append a number to disambiguate (john2@firm.com). Rare, about 0.3% of firms in our data, but it happens.
Title-based aliases. A few firms use role-based aliases that look like personal addresses: partners@firm.com, team@firm.com, deals@firm.com. These are not partner-direct; they go to a triage queue. Avoid.
How to find the pattern in 90 seconds
The pattern is hidden in plain sight. You only need one verified email address at the firm to know the rest.
Source 1: the firm's own website. Almost every firm lists at least one address publicly. The press contact, the careers contact, a partner's bio that includes their email, or the firm's "About" page. Spend 30 seconds on the website looking for any @firm.com address.
Source 2: LinkedIn contact info. Many partners list their email in their LinkedIn contact info section, especially partners actively recruiting deals at pre-seed and seed. About 30% of partners have it visible to logged-in LinkedIn users.
Source 3: recent press releases or fund-launch announcements. When a firm closes a new vintage, the press release usually quotes a partner with their direct email at the bottom for media inquiries. Search Google for "firm name" press release and check the most recent.
Source 4: paid tools. Hunter.io has a free tier (25 lookups per month) that returns the firm's pattern after one verified email. Apollo's free Chrome extension does the same. Use these only after the free sources have failed; they cost lookups.
Once you have one address, the pattern is readable from it. john.smith@firm.com tells you the firm uses firstname.lastname.
Verification before sending
A bouncing email is recoverable. A dozen bouncing emails to the same domain is not. the receiving server starts marking your sending domain as spammy.
Three free verifiers, in the order of accuracy:
Mailtester.com: paste an address, get a verification status. Free, no account, fastest. The most reliable for the patterns we are talking about.
Hunter.io email verifier: same flow as mailtester, slightly more strict on inferring deliverability. 25 free per month under the free tier.
The bounce-back test: send a one-line "test message" from a throwaway Gmail. Wait 60 seconds. If no bounce notice, the address is live. Use this only when the other two return ambiguous results.
For a 50-partner outreach list, total verification time is about 5 minutes if you batch the work. Worth doing every time.
What "knowing the pattern" actually moves
A founder who wrote 50 cold emails to info@ inboxes typically gets 1 to 2 replies in two weeks. Same founder writing to partner-direct addresses gets 4 to 8 replies in the same window. Same email body, same deck, same cadence.
That is the difference between a stuck round and a round with momentum.
If you are running outreach right now and your reply rate is in the 1 to 2 percent range, the issue is almost never the deck. It is the recipient. Switch to partner-direct addresses for your next 10 emails and watch the number move.
What I built
We baked this lookup directly into Claude Fundraiser. When you upload a deck, we match you against 8,665 investors, and for each match we surface the partner names plus the firm's email pattern. The address is synthesized for you, with a confidence flag based on how many partner emails we have already verified at that firm.
It is the same five-step process described above. Just automated.
If you want a personalized list of partner emails for your specific deck, score it free at claudefundraiser.com/upload.
About Claude Fundraiser
Claude Fundraiser scores pitch decks on the 8 dimensions VCs actually evaluate (problem, market, team, traction, etc.), matches founders against 8,665 enriched investors ranked by fit, and drafts personalized cold emails grounded in the founder's own deck and each investor's thesis, in the founder's voice. Free to score and see top 10 matches. Plans at $297/$697/$1,497 for 50/200/500 drafts, or à la carte at $49/$149/$299.