Not-adapted-for-Search-Engines guide to writing compelling subject lines when you don't have a specific trigger you can use like "Just raised our Series A" or "Saw you're attending ABC Virtual Event" or even "I talked to your CEO and they asked me to tell you to stop everything you're doing and talk to me A-freaking-SAP".
Ground-setting principles based on our data before anything:
Here they go, in no particular order:
How to read these:
{{Objective}}: it should be at the core of your prospect's day to day but should be phrased in a detailed enough way that they understand that you understand their pain.
{{Problem}}: People react more to problems than to anything they might potentially gain. Phrase the issue by presenting a specific angle instead of being too broad. Telling a Sales Director that they need help booking more meetings is weak. But telling them SDRs need to be able to go off-script (if not you wouldn't pay them $50k+$15k commissions) but when they do it's sometimes a disaster makes them understand that you know their pain, and they can feel it.
{{Status quo}}: the situation they're in right now, what kind of works for them but could obviously be improved
{{Future state}}: where you want to take them, the implications of your offer on their business.