Get your raise emails
read by the partner.
You only get a handful of these emails, and one bad sending pattern can burn the whole list. So warm the mailbox weeks ahead, keep the follow-up light, and make the send look like a founder typing at their desk, not a tool firing on a schedule.
The three patterns that kill an investor sequence.
None of these are exotic. They are the same three mistakes founders make on almost every raise, and each one has a setting in Warmbly that quietly keeps it from happening.
A mailbox you connected this week has no history, so the first thing it ever does is cold-email strangers. That is the textbook spammer pattern, and you can taint the domain for the whole raise in a couple of days.
Connect the mailbox four to six weeks out and let warmup run. It climbs from 10 to 40 sends a day, so by the time you write the first partner the mailbox already looks lived-in.
See warmup rampCC-ing your co-founders does two bad things at once: Gmail reads the chain as bulk mail, and the partner opens to a wall of names instead of a two-line ask from one person.
Send one to one, one founder to one partner. If someone on your side needs to be in the loop, bring them in from the shared inbox once the partner replies, not on the cold send.
How inbox routing worksFiring the whole list at 9am Tuesday is the loudest spam tell there is. One mailbox sends dozens of near-identical emails in the same minute, which is not something a person ever does.
Spread the sends across each partner’s own working hours, with a gap between them (600 seconds by default). It paces out like someone working through a list, and stays under the mailbox’s daily cap.
Scheduling rulesYou draw a flow, not a drip list.
A campaign is a small canvas. Each step holds for as long as you set, sends, then splits on what the investor actually did. There is no separate wait block to babysit, the wait sits on the step itself. A reply can stop the chase on the spot, open a task, or ping you. For a raise we keep it to two emails, but it is the same builder every campaign runs on.
- The wait lives on the step. Each one holds for the number of days you give it, then sends. Nothing to wire up in between.
- Branches read behaviour. Opened, clicked, replied, or a reply we have read as interested, not interested, or out of office: each can take its own path.
- A reply cuts the line. The moment a partner answers, the cold steps stop and a step can run right then: tag them, open a CRM deal, or drop you a notification.
Two emails is our call for a raise, not a ceiling. The same canvas branches up to 50 steps when a campaign needs it.
Warmup keeps running during the raise.
A mailbox can drift in the middle of a raise. Warmup runs in parallel so any spam-folder placement is caught at the partner pool before a partner hits the report button.
Read the warmup guideFour to six weeks. The ramp from 10 to 40 per day takes about 30 business days, and warmup needs at least 20 deliveries in the pool before the mailbox is rated Healthy.
Shorter than you think. Partners get hundreds of these a week, so one strong first touch and a single follow-up does most of the work. You can build more, the editor goes up to 50 steps with branching, but for a raise we would not. A fourth and fifth email mostly buys you complaints.
No. A cold attachment hurts deliverability and, honestly, it takes away their reason to reply. Send three or four sentences and an ask, then send the deck once they answer. The reply is the whole point of the first email.
Warm now, send when the deck is ready.
Connect a mailbox, warm it up, send your first campaign today.