Email

One PDF is an attachment. A ZIP of 3× PNG pages is a different object.

Bind can emit either. People then paste both into Gmail and blame the converter when Google removes the file and inserts a Drive link. Official Gmail help (6584): if attachments total more than 25 MB, Gmail takes the files out of the message and puts a Drive link in. That is a mail cap, not a Bind quota. Bind never talks to Drive and never sends the message.

Which object the recipient asked for

They asked for a PDF. Images to PDF, order the stills, download one file, attach that file. On iPhone it must exist in Files first — iPhone. Do not attach the 12 JPEGs “and a PDF”. The JPEGs are the sources. The PDF is the packet.

A portal asked for JPG of page 3. PDF to Images, range 3, JPEG or PNG. Attach that still, or upload it in the portal. Mailing the whole report PDF is the wrong object. Mailing a 3× PNG ZIP of 80 pages is how you hit 25 MB.

MIME/base64 makes a binary larger in the message than it looks on disk. A PDF that shows 24 MB in Files can already fail the cap. Do not cut it fine. Split the range or bind fewer photos.

What Bind does

It writes a blob in this tab. You save it. You attach it in Mail, Outlook, Fastmail, a clerk’s web form. Close the tab before save and the blob is gone — there is no “resend from Bind’s server”, because there is no server copy. The converter is the product. Mail is yours.

The ceiling

Bind will not raise Gmail’s 25 MB. Bind will not flatten a 3× PNG ZIP into a small PDF automatically — those are opposite directions. If the PDF is huge, you put too many heavy photos on too many pages, or you extracted at 3×. Lower scale. Fewer pages. Contain on A4 does not magically shrink a 40-megapixel phone photo; the photo is still in the page. Shrink the stills before bind if the clerk’s inbox is the bottleneck. That shrink is not this tool’s primary job.

Steps

1. Decide PDF packet vs named stills. Do not send both “to be safe” if the cap is tight.
2. Bind or extract. Open page 1 and the last page. Crooked scans stay crooked — Bind does not deskew.
3. Look at the file size in Files or Finder before you open compose.
4. If it is near 20 MB+, split. Two mails with two PDFs beat one Drive surprise when the clerk’s policy forbids Drive.
5. Attach the Files/Downloads object, not Recents. Recents is photos. WhatsApp is a different pipe — WhatsApp.

What looks like a bug and is not

• Drive link appeared — Gmail 25 MB. Not Bind.
• Clerk says they cannot open ZIP — they wanted a PDF. Send the PDF.
• Type is soft in a 1× extract — raise scale or rescan. Raster cannot invent vectors.
• Outlook blocked PDF — their policy. Bind wrote a normal raster-per-page PDF, not JS-in-PDF.

Work mailbox versus Gmail

Many work servers cap attachments at 10 MB and silently drop the rest. 25 MB is Gmail’s published number, not a universal law. If the clerk is on a government or university host, believe their bounce. Split PDFs by day or by form. Bind does not know their server.

Do not CC a ZIP of passports

Bind is local so that a scan need not hit a conversion farm. Email is not local. If the document is identity-sensitive, ask whether the clerk has a portal. A PDF in mail is still a copy on two servers. That is not a Bind defect; it is why this page tells you which object to attach, not that mail is a safe. Do not send identity scans to ultaultimatum@gmail.com either — Contact already says that.

Portal 2–10 MB “upload JPG”

That is PDF to Images, one page, JPEG, 1× or 2×, then the portal, not Gmail. Mailing them a 40-page PDF because “email always works” is how the ticket sits unopened. Named still versus packet — pick once.

Second attachment: the form plus the ID page

Two small PDFs often beat one combined file near the cap. Bind does not merge, so you already have a reason to keep them separate. Two attachments, two filenames the clerk can file. One ZIP of mixed PNG pages is how names get lost.

Plain-text reminder in the body

Write “PDF, 8 pages, A4, receipts 12–19 May” in the message body. Bind does not write that sentence. Clerks search mail, not EXIF. The filename after sanitization may have lost commas and emoji — rename in Files before attach if their system keys off a strict pattern. The how-to already notes sanitization; this page only repeats that mail is where the name is judged.

Extract JPEG quality versus PDF size

A JPEG extract at 1× is a small still. A PDF of the same page holds the raster Bind painted at the paper size you chose. They are not interchangeable for a cap. If the clerk asked for a document, mail the PDF and keep extract quality out of the argument. If they asked for a still, pick 1× or 2× JPEG and skip the ZIP of every page. Quality sliders on other sites are a different product.

Reply-all with the same 20 MB file

Each hop copies the attachment. A thread that already holds the PDF does not need the same file attached again unless a new person is missing it. Bind cannot see the thread. You can. Re-attach only when the new recipient was not on the last mail.

Shared mailbox and delayed delivery

Some shared inboxes quarantine PDF from unknown senders. That is their filter, not a Bind header. If the clerk says “nothing arrived” and Gmail on your side shows Sent with a normal size, the file left your device. Ask them to check quarantine before you rebuild the PDF.

Honesty limits

Bind does not BCC, does not virus-scan, does not PDF/A. If a portal requires PDF/A, print-to-PDF from Preview after you verify pages, or ask them which profile. Success is: the object they named, under the mail cap, attached from the folder you saved. How-to buttons: how-to. Use-case stacks: use cases.