Recruiter guide | Updated 5 November 2026 | By Ramy Elbeitam, recruitment operations manager

How to write job ad instructions so applications are easy to sort

Short answer: Tell applicants exactly what to send: a fixed subject line with the job code and their name, the CV as a PDF named with their name, and nothing else in the attachment list. Clear instructions in the ad make the inbox sortable.

Recruiters usually start fixing a messy inbox after the applications arrive. The cheapest fix comes earlier: the instructions in the job ad. A couple of clear lines decide whether you get two hundred emails titled "Application" with a file called CV.pdf, or two hundred emails you can sort with a single search.

Why instructions matter

When an inbox receives applications for several openings at once, the subject line is often the only clue to which role someone wants. Without it you have to open every email, read the cover note and guess. Clear instructions also act as a light first screen: an applicant who follows them has shown they read the ad.

What to ask for

A job code in the subject line. Give every opening a short code, such as RN-2611 for a staff nurse role posted in November 2026. Ask applicants to write the subject as Job code – Full name, for example RN-2611 – Maria Santos.
One CV file in PDF. PDF looks the same on every computer and is easy to search. Ask for one CV rather than several partial files.
A sensible file name. Ask for Surname_Firstname_CV.pdf. Many applicants will still send Resume.pdf, but plenty will follow it.
Essential facts in the email body. Ask for two or three lines covering what you screen on first, such as current location, availability or notice period, and expected salary. You can then shortlist without opening every attachment.
Which documents to send now and which later. Passports, IDs and certificates carry sensitive data. If you only need them after an interview, say so, and you avoid storing them for every applicant.

A ready-to-use block for your ad

Copy and adapt this:

How to apply: Email your CV in PDF to [email protected] with the subject RN-2611 – Your full name. In the email, tell us your current city, when you could start and your expected monthly salary. Please name your file Surname_Firstname_CV.pdf. Do not send ID or passport copies at this stage; we will ask for them if you are shortlisted.

Choosing job codes

Keep them short, with no spaces, so they survive copy-paste and email clients that trim subjects.
Make them unique across time. Adding the year and month stops a role reposted next year from mixing with this year's pile.
Use the same code everywhere: the ad, your inbox folder or label, your shortlist spreadsheet and the folder where you save CVs. One code, one opening.

Expect some people to ignore them

A share of applicants will always send a blank subject or a file called Document1.pdf, especially when they apply from a phone or through a job board that writes its own subject. Don't reject them for that alone; strong candidates can miss a line. Instead:

Search for the job title as well as the code, since many people write the title instead.
Check the job board's own subject format. Many boards use a fixed pattern you can search for.
Rename the file when you save it, following your own naming convention.

How Applicant Packager uses your instructions

Applicant Packager, a free Windows app, lets you search your mailbox by job title or code and saves each matching applicant's files into a folder for that role and person. The clearer your subject lines, the fewer applications need a manual look. You still review every match before anything is saved, and your mailbox is never changed.

Download Applicant Packager free