No response (same thread)
SubjectRe: {original subject}
Hi [their first name], One more thought on this: [new angle or example in one sentence]. Worth a quick look? [your name]
ReachWriter / Email templates / Follow-up email subject lines
Follow-up email subject lines
Short answer
For the first one or two follow-ups, reply in the same thread and keep the original subject ("Re: …") so the context sits underneath. When you start a new thread, use a short, specific subject that names the topic or the next step — four to seven words — and avoid fake "Re:" or "Fwd:" prefixes.
When to send it
| Situation | Timing |
|---|---|
| Keep "Re:" (same thread) | Follow-ups 1–2 after a cold email or meeting |
| New subject, new thread | A genuinely new angle, or weeks later |
| Breakup subject | The final note in a sequence |
Templates you can fill in
New angle (new thread)
Subjecta resource on [topic / what it is about]
Hi [their first name], No pitch this time — here is [resource] on [topic / what it is about] that teams like [their company] have found useful. [your name]
Breakup
Subjectshould I close your file?
Hi [their first name], I have not heard back, so I will assume [topic / what it is about] is not a priority right now. I will stop following up — reply any time if that changes. [your name]
Or describe your situation and let AI write it
Three drafts appear here, each with a different approach and its own subject line. The templates above work without AI.
Subject lines that fit
- Re: {original subject}
- one more idea for [their company]
- recap + next steps from [day or date referred to]
- questions on the proposal?
- still a priority, [their first name]?
- should I close your file?
- checking on my application for [role]
- a resource on [topic / what it is about]
- Tuesday or Thursday?
- last note on [topic / what it is about]
Check how yours truncates on a phone with the subject line tester.
What makes it work
- Faking "Re:" on a first-time email erodes trust; only use it on real replies.
- Lowercase, conversational subjects often read like a note from a person rather than a campaign.
- Check how the subject truncates on a phone — around 30–40 characters are visible in many mobile inboxes.
- Test your subject in the subject line tester before sending.
Questions people ask
What is a good subject line for a follow-up email?
In the same thread, keep the original subject. For a new thread, name the topic or the next step in a few words, e.g. "recap + next steps from Tuesday" or "questions on the proposal?".
Should I change the subject line of a follow-up email?
Not for the first follow-ups — replying in-thread keeps context. Change it when you start a new angle or come back after several weeks.
Is it okay to use "Re:" in a follow-up subject line?
Yes, when it is a genuine reply to your earlier email. Adding "Re:" to a first-time email to fake familiarity is misleading.