7 laws of highly effective emails
What did an analysis of 300,000 sales emails reveal about the dos and don'ts of email marketing? Quite a bit—with some surprising results. Here are the 7 laws of conversion-optimized emails.
Should I mention ROI in my cold sales emails?
In cold outreach, leading with ROI usually backfires. Our analysis of 300,000+ sales emails shows that using ROI language in cold emails actually decreases success rates by 15%.
The reason: buyers don’t yet understand the context behind your ROI claim, so it feels unproven or generic. Instead of promising a specific return, focus on:
- Highlighting a clear pain or challenge they’re likely facing
- Connecting that pain to a business objective they care about
- Offering a short, low-pressure conversation to explore fit
For example, instead of saying, “We deliver 300% ROI in 6 months,” try:
- “How is [PAIN] preventing you from hitting [BUSINESS OBJECTIVE] this quarter?”
- “Does it make sense to explore how we can help you achieve [POSITIVE OUTCOME]?”
This reimagines your cold email from a hard ROI pitch into a relevant, problem-focused message that prospects are more likely to engage with.
What’s the best call to action in cold emails vs. in-pipeline emails?
Cold outreach and in-pipeline emails perform best with different CTAs.
For cold emails: use an Interest CTA instead of asking for time.
- Confirming interest before asking to set a meeting is 2x more effective than a standard “Can we get 30 minutes?” ask.
- Examples:
- “Would achieving [OUTCOME] help your team deliver on [INITIATIVE]?”
- “Are you interested in learning how [COMPETITOR 1] and [COMPETITOR 2] are achieving [OUTCOME]?”
- “Interested in unpacking how we can help with [PAIN]?”
For in-pipeline opportunities: once a buyer is already in your sales cycle, switch to a Specific CTA that asks for time.
- Suggesting a specific date and time delivers a 37% success rate for in-pipeline emails, compared with 28% for other CTAs.
- Examples:
- “Are you available to discuss this on [DAY] at [TIME]?”
- “How’s your calendar look on [DAY] at [TIME] to cover everything you want to know about [TOPIC]?”
In short: in cold outreach, sell the conversation. In active deals, remove friction by proposing a specific time.
How can email behavior help me close more deals?
Email engagement is a strong signal of deal health, and it can reshape how you forecast and follow up.
Use email volume as a forecasting signal:
- Healthy deals see a 753% increase in email exchanges as both sides move toward signature, compared with closed-lost deals.
- Track the number of emails exchanged per deal over time; a rising volume often indicates active evaluation and alignment.
Rethink how you follow up after group calls:
- Response rates are highest when there are 2 recipients on an email, then they decline.
- Once a thread has 3+ participants, move to single-threaded follow-ups with each stakeholder.
- In each 1:1 follow-up, highlight the topics and next steps that matter specifically to that person.
Make your emails about them, not you:
- Top reps use “you,” “your,” and “your team” 29% more often than average and underperforming peers.
- Use everyday “words that sell” in your calls, decks, and emails, such as:
- “Users maximize their time…”
- “You’ll be more efficient with this workflow.”
- “You’ll improve competitive win rates with these insights.”
By watching engagement patterns and personalizing your follow-ups, you can reimagine email as both a forecasting tool and a way to keep deals moving forward.