- 1
Read the symptom: opens look fine, replies don’t
Opens are okay, but replies sit near zero. If mail is reaching inboxes (good opens), deliverability is working — the problem is the message and the audience. This playbook tunes both. If opens are also low, fix deliverability first — see Emails landing in spam — the checklist.
- 2
Read the analytics
Open Campaign Analytics and separate open rate from reply rate. High opens plus low replies means a message or targeting problem. Note which step in the sequence stalls. See Read your campaign analytics for the full breakdown.
- 3
Tune the SDR tone and instructions
Open Campaign → SDR Config. Rewrite the SDR Setup Instructions to be specific about the offer and audience, and refine Persona & Voice / Custom Instructions. A generic AI voice is a top reply-killer. Try a Preset as a starting point — every field stays editable after you apply one.
- 4
Fix email structure
In Email Structure, keep Email Length set to short, enable Ask questions in emails (a question invites a reply), and use stats, case studies, and a P.S. line sparingly — only when they genuinely fit. A short, question-led email out-replies a long pitch.
- 5
Improve the follow-ups
In Follow-Up Strategy, set the Follow-Up Approach to bring a fresh angle each time, and keep Rotate value proposition each follow-up on so every touch says something new instead of just bumping the last email.
- 6
A/B test your templates
On a Template campaign, add an A/B variant with a different subject or opening line, let both run, then compare reply rates in analytics and pick the winner yourself — there’s no auto-winner. See Template A/B testing.
- 7
Tighten targeting
In Segmentation, exclude contacts already in active or completed campaigns and narrow to the lists or tags that actually fit your offer. Fewer, better-matched contacts reply more than a broad blast. See Segmentation & exclusions.
- 8
Iterate
Change one lever at a time, give it enough volume to be meaningful, and re-check analytics. Reply-rate tuning is a loop — not a one-shot fix.
Pro tips
Hard-won shortcuts that keep warm-up on track.
High opens, low replies = message problem
Don't touch DNS. Rewrite the SDR instructions and tighten the list instead — deliverability is already working.
Ask a question, keep it short
A one-question, five-line email gets replies a polished three-paragraph pitch never will.
A/B has no auto-winner by design
Run two variants, read the reply rates in analytics, and pick the winner yourself — then feed that learning back into the SDR instructions.
Change one variable at a time
Rewrite the SDR voice, swap templates, and re-segment all at once, and you'll never know which change actually moved replies.
Frequently asked questions
Why is my reply rate so low if opens are fine?
Because reaching the inbox is only half the job. Good opens mean deliverability works; low replies mean the message or the audience isn’t landing. Tune the SDR and targeting.
What’s the fastest lever?
Usually the SDR Setup Instructions plus shorter, question-led emails. Generic AI copy and long pitches are the most common reply-killers.
Does FirstSales pick the A/B winner for me?
No. A/B variants run, but you compare their reply rates in analytics and choose the winner manually. There’s no auto-winner.
Should I A/B the subject or the body?
Start with the subject and opening line — it drives whether the email is read at all. Once that’s tuned, test body and CTA.
How narrow should my targeting be?
Narrow enough that the same email is genuinely relevant to everyone on the list. Exclude anyone already in another campaign to avoid double-touch and irrelevance.
How long before I know a change worked?
Give each change enough sends to be statistically meaningful before judging — a handful of emails won’t tell you anything.
Can I change the AI model or add spintax to vary copy?
No — there’s no drafter model-tier or spintax selector. Variation comes from the SDR instructions, follow-up rotation, and A/B templates.
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