Pink PostA/B subject lines
A/B test subject lines
Add two or more subject lines to a step and Pink Post splits them across prospects, then shows the reply rate for each. Use it to learn which subject gets editors to answer.
Why it matters
Find out which subject line actually earns replies, not which one you like.
Every step can have an optional Subject B. Prospects are split between variant A and B, and analytics show results per variant.
How to use it
Set it up in a few steps
- 01
Fill in "Subject B (optional A/B)" on a step
Fill in "Subject B (optional A/B)" on a step.
- 02
Each enrollment is assigned variant A or B
Each enrollment is assigned variant A or B.
- 03
Compare reply rates per variant on the Analytics page and ex
Compare reply rates per variant on the Analytics page and export to CSV.
Under the hood
How it works
Even split
Each prospect gets one variant, assigned in turn so groups stay balanced.
Measured on replies
Reply rate is the main measure, because open tracking is off by default and opens are unreliable.
Combine with spintax
Spintax varies the body so no two emails are identical.
| Setting | Value |
|---|---|
| Variants | 2 or more per step |
| Split | Even across prospects |
| Metric | Reply rate (opens if tracking on) |
| Works with | Placeholders and spintax |
Tips
Get more from it
Tip 1
Test one idea at a time, for example a question versus a statement.
Tip 2
Wait for at least a few dozen sends per variant before drawing conclusions.
In a campaign
Where a/b subject lines fits in link building outreach
Pink Post runs a link building campaign in seven steps, from prospect list to a live link that keeps being checked. Here is where this feature does its work.
- Step 1
Import prospects
Upload a CSV, Excel file or Google Sheet of sites and contacts; Pink Post dedupes, blocklists and verifies them.
- Step 2
Pick a playbook
Start from a guest post, link insertion, broken link, resource page, skyscraper or partnership template.
- Step 3 · this feature
Write the sequence
Edit the pitch and one or two follow-ups with conditions, placeholders and spintax; test subjects with A/B variants.
- Step 4
Send safely
Emails go out at a safe pace with rotation, warm-up, limits and DNS checks.
- Step 5
Handle replies
Replies land in one inbox with labels; follow-ups stop on reply.
- Step 6
Close the deal
Move the deal to Negotiating and Deal done with the agreed price.
- Step 7
Keep the link
Mark it Link live and let Pink Post re-check the page.
Compared
Pink Post vs the usual setup
| A/B subject lines in Pink Post | Typical cold email tool | Spreadsheet + Gmail | |
|---|---|---|---|
| Subject variants per step | |||
| Measured on replies | Often opens | ||
| Spintax in body | |||
| On every plan | Varies | — |
Plans
A/B subject lines on every plan
| Free | Solo | Pro | Agency | |
|---|---|---|---|---|
| Price per month | $0 | $19 | $39 | $129 |
| Mailboxes | 1 | 3 | 10 | 30 |
| Prospects | 500 | 5,000 | 25,000 | 100,000 |
| Emails per month | 300 | 3,000 | 15,000 | 50,000 |
| Users | 1 | 1 | 3 | 10 |
| Live link checks per month | 25 | 250 | 2,500 | 10,000 |
A/B subject lines works the same way on every plan; plans only change the limits above. Yearly billing costs $16, $32 and $108 a month. Compare plans in full.
FAQ
Questions, answered
How many emails do I need for a test?
Aim for at least 100 prospects per variant before choosing a winner.
What subject lines work for link building?
Short, specific ones that mention their site or article.
Can I test the body too?
Use spintax for body variation; subject A/B is per step.
Does it work with Gmail and Outlook mailboxes?
Yes. Pink Post works the same with Gmail, Google Workspace, Outlook, Zoho, Hostinger and any SMTP/IMAP mailbox you connect.
Is a/b subject lines on the free plan?
Yes. Every plan includes it; plans differ by mailboxes, prospects, emails per month, users and live link checks. Free has 1 mailbox and 300 emails a month, Solo $19 has 3 mailboxes, Pro $39 has 10 and Agency $129 has 30.
How is a/b subject lines different from a cold email tool?
Cold email tools are designed for sales pipelines. In Pink Post every feature feeds a link deal: replies move deals, deals hold prices, and live links keep being checked, so the result of the campaign is a list of live links with their cost.
Run your next outreach campaign in Pink Post.
Free plan, no card. Import your contacts, write a personal sequence and launch your first outreach campaign.