A visitor who has never been to your site hunts for the entrance on arrival. A renter wants to reread the terms. A course participant wonders what to bring. Those are exactly the moments where a file in the confirmation email helps — which is why you can now send one along.
Where to set it
Everywhere you could already edit an email text, there is now an Attachment block. For an event you will find it under Events → your event → E-mail tab, below the fields for subject, greeting and body. For a module — rentals, shop, courses, food trucks, donations, memberships, cashless or the city card — it sits on that module's E-mails tab.
The block sits below the text fields. Uploading saves immediately — no separate save step needed.
Note the Optional label: it really is. Most organisers send no attachment at all, and that is perfectly fine. The block shows, per type of email, what a sensible attachment could be — a floor plan or directions for an event, the rental terms for rentals, the menu with allergen information for food trucks — so you never have to guess what it is for.
The limits, and why they exist
A PDF may be up to 3.5 MB, an image up to 2 MB. That sounds tight if you are used to mailboxes that swallow 25 MB, but there is a reason behind it.
An attachment grows by roughly a third in transit because mail has to re-encode it. A ticket confirmation carries the ticket PDF on top of that. And the smallest limit in the chain always wins: Outlook.com and iCloud cap at 20 MB, and older corporate servers sometimes still sit at 10. Go over it and your visitor receives nothing — or the message lands in the spam folder, taking every later message to that address with it. These limits keep you well clear.
If your file is too large, the error tells you what to do: shrink it, or put it on your own website and link to it from the email text. That second option is almost always the safer one — a link keeps your message light, and you can update the file later without everyone holding an outdated copy in their inbox.
Only file types that actually arrive
You can send a PDF, JPG, PNG or WebP, and nothing else. That is not arbitrary: zip archives, executables and macro-enabled Office documents get stopped by Gmail and Outlook regardless. If you could upload them, your attachment would vanish on the way to your visitor — or worse, make the whole message look suspicious.
Every file is checked for unsafe content on upload. For a PDF we verify that it really is a PDF and that it carries no active content: JavaScript, auto-running actions, embedded files or self-executing forms. For an image we check that the file genuinely opens as an image. If anything looks off, the file is not stored and you are told why.
You see it in the preview
As soon as an attachment is set, it appears at the bottom of the email preview next to the form — with a paperclip, file name and size, exactly the way your visitor will see it in their mail client.
The attachment appears below the closing, with file name and size.
You will also notice the file name has been cleaned up: spaces, capitals, accents and punctuation are stripped, while the extension stays. So "Rental terms 2026 (final).pdf" becomes rental-terms-2026-final.pdf. That saves trouble with mail clients and operating systems that get picky about odd characters in file names.
And if something goes wrong
If the file happens to be unreachable at the moment of sending, the email simply goes out without it. A confirmation carrying tickets is too important to strand on a floor plan — that can always follow later.
Want to know more about what you can change in your confirmation email? Read how to set the text of your confirmation emails or browse all modules.
