Inquiry Email Subject Lines

Type: Inquiry and Customer Service

This inquiry email subject line is short and clear. Send it after someone browses a product page but leaves without making a purchase.

However, the phrase “Quick Question” may be misleading if your message is long, so aim for a concise body with the bare facts and one call to action.

Inquiry Email Example

Hi Alex,

I noticed your team supplies the Atlas widget. Could you confirm stock levels this week?

We are finalizing next Tuesday’s shipment schedule and need 50 units.

Thanks,
Morgan

Type: Professional Networking Inquiry

Using the question form in subject lines creates a cooperative tone, which is helpful for customer success and B2B outreach.

Asking explicitly for guidance shows respect for the recipient’s time and results in faster replies than vague “Hello” messages.

Type: Sales Inquiry

Using a first name and making a specific request—in this case, pricing—sets clear expectations. Including “Pro Plan” shows that you have reviewed their tiers and avoids the rookie mistake of asking for publicly available information.

This Subject Line Can Also Be:

• [Name], Can We Discuss Your Pro Plan Rates?
• Seeking Details on Your Pro Plan Pricing

Type: Technical Integration Inquiry

“Looking to,” shows intent. It hints at a potential partnership, which is a strong trigger for support or solutions engineers who track potential integrations.

Avoid emojis and hype in the subject line. Technical readers favor precision over flair. If you must add urgency, include a simple date in brackets. “By Aug 15.”

Type: Partnership Inquiry

For merger, affiliation, or co-marketing proposals, using this subject line signals a desire for collaboration rather than a hard sell.

Starting with “Exploring Partnership” invites dialogue. The colon separates the context from the action, making the question stand out to those who scan.

This is a perfect subject line to use when a prospect goes quiet mid-evaluation. The phrase “quick check” keeps it lightweight, “are you still evaluating” names the status without assumption.

People often ghost when priorities shift. A gentle inquiry about the status of the evaluation process invites honesty, and the “quick check” reduces the cognitive load of reaching out.

Example Email:

Subject: Quick check, are you still evaluating the onboarding flow?

Hey [Name],

We haven’t heard back from you since the last demo. Are you still evaluating the onboarding improvements, or should I pause the follow-up?

If something changed, a one-line update works.

Thanks,

[Your Name]