Raise my email open rate to 40%
Your AI CEO runs the deliverability + subject-line war for you.
You'd think this needs a deliverability consultant and 6 months — Astra hits 40% in 6 weeks by killing the dead weight on your list.
The short answer
Astra raises your email open rate to 40% by attacking three levers in parallel: deliverability (SPF/DKIM/DMARC audit, sender warm-up, sunset policy for never-openers), segmentation (engaged vs lapsed vs cold, sent at each segment's peak hour), and subject-line testing (3-variant A/B every send, learning which patterns win for your list). Most founders are at 18-24% because half their list hasn't opened in 6 months and they keep emailing them — which kills sender reputation and tanks delivery for everyone. Astra runs a sunset campaign in week 1 that removes 30-40% of dead weight, then layers in send-time optimization and subject-line iteration. By week 6 you're at 38-42% on a smaller, hotter list with higher click-through and revenue per send. You'll send fewer emails to better people.
How Astra actually does it
- 1Audit deliverability
Check SPF, DKIM, DMARC records on your sending domain. Run sender score check. Identify if you're getting flagged by Gmail/Outlook spam filters.
MailchimpResend - 2Sunset the dead weight
Identify everyone who hasn't opened in 90 days. Send a 3-email re-engagement series. Anyone still silent after that gets removed. Typical cut: 30-40% of list.
- 3Segment by engagement + send-time
Tag list as Hot (opened last 30d), Warm (opened 30-90d), Cold (>90d). Find each segment's peak open hour from PostHog email events. Send at peak per segment.
PostHog - 4A/B test subject lines every send
3 variants per email, 10% of list each, winner sent to remaining 70%. Astra tracks which patterns win (question vs statement, length, emoji, personalization) and applies the learning to future sends.
- 5Weekly Lark report
Open rate trend, top 3 winning subject lines, what to repeat next week, current % toward 40% goal.
Lark
What it looks like in chat
A weekly Lark report showing open rate trend, winning subject-line patterns, and progress toward 40%. Plus all the work — sunset campaigns, segment splits, A/B tests — running automatically.
6-week sprint to 40%, then always-on optimization with weekly Monday reports.
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Try this with AstraFrequently asked questions
Is 40% realistic for my industry?
B2B SaaS averages 22-28% on big lists, 35-45% on engaged segmented lists. Newsletters with strong voice can hit 50%+. 40% is achievable for most founders if the list is properly segmented and dead weight is removed. If your list has structural issues (bought list, no opt-in confirmation), Astra will flag this in week 1 and reset expectations.
Won't cutting 30-40% of my list hurt my reach?
Counterintuitively, it raises reach. Email providers (Gmail especially) demote senders whose mail goes to inactive inboxes. Removing dead subscribers improves your sender reputation, which improves delivery rate to active ones. Net opens typically go up, not down — and revenue per send goes up sharply.
Can Astra write the subject lines or do I have to?
Astra writes them by default — 3 variants per send based on what's worked for similar SaaS lists and your historical winners. You can review before sending or give her full autonomy. Most founders give autonomy by week 3 once they trust the patterns.
What if I'm on a platform Astra doesn't directly integrate with?
Astra works natively with Mailchimp, Resend, ConvertKit, Customer.io, and Klaviyo. For others (HubSpot, ActiveCampaign, MailerLite) she connects via Composio. The deliverability audit and subject-line A/B work everywhere; segmentation depends on what your platform exposes.
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