How to Send a File That Is Too Large for Email

Quick answer

If a file is too large for email, upload it to HeftySend and paste the completed download link into your message instead of attaching the file. A free transfer supports up to 20 GB, with three days for collection. You can keep the intended file quality, and your recipient does not need a HeftySend account.

You have finished the work, written the email and hit a size warning. Start by checking what the warning actually says. An attachment limit, a full mailbox and a blocked file type need different fixes.

This guide covers replacing a rejected attachment with a useful delivery link, including a finished photo example. Product and email guidance checked on 28 September 2026.

Why does email say your file is too large?

Email systems limit attachments or the complete message. Several small files can exceed the allowance together, and the recipient’s system may have different limits from yours. A successful upload into your email draft does not prove that the destination will accept the message.

Read the error before trying again:

• The attachment exceeds the size limit: replace it with a transfer link, or send a smaller version only if that version meets the recipient’s needs.
• The mailbox or account is full: address that storage problem. A link cannot make an account able to receive mail when it has stopped accepting messages.
• The file type is blocked: check the recipient’s approved delivery method. Do not disguise an extension to get around a security restriction.
• The upload has not finished: let it complete before sending. If it fails, check the connection and the service’s error message.

What are the Gmail and Outlook attachment limits?

The word “Outlook” can mean an app or a mailbox service. Use the guidance for the account and client you actually have.

• Personal Gmail: Google lists a 25 MB attachment limit. When the total exceeds the limit, Gmail replaces the attachment with a Google Drive link. Work and school limits are controlled by the Workspace administrator. See Google Help, Send attachments with your Gmail message.
• Outlook.com: its service specific support page lists a 25 MB file attachment limit. See Microsoft Support, Sending limits in Outlook.com.
• Outlook apps and business accounts: Microsoft’s broader Outlook attachment guidance describes a 20 MB message limit for internet email accounts and a 10 MB default for Exchange accounts, including the message and attachments. Those figures should not be treated as a universal limit for every Microsoft mailbox. Check your app, account and organisation’s settings. See Microsoft Support, Reduce attachment size to send large files with Outlook.

If you are delivering hundreds of megabytes or several gigabytes, a small difference between email limits will not solve the problem. Keep the files outside the email and send a link to them.

How do you replace the attachment with a HeftySend link?

1. Keep the intended original. Find the finished file in your project folder. Do not rely on a smaller copy saved from a message preview.
2. Remove the oversized attachment from the draft. Keep your subject, recipient and written message.
3. Upload the delivery at HeftySend. Check that all the files together fit the free 20 GB allowance, or choose a suitable paid plan. Wait until the upload finishes and the transfer link is ready.
4. Check the recipient page. Open the link without relying on your sender login. Confirm the file list, download availability and expiry.
5. Paste the completed link into your email. Say what is included, which version to use and when to download. Then send the message.

A basic free send does not require an account. Create a free account if you want to explore the app before choosing paid features. Our free sending walkthrough covers the full upload process.

How do you send finished photos that are too large for email?

Suppose you have 40 approved JPEG photographs averaging 12 MB each. That is roughly 480 MB in decimal units, before any supporting notes. This illustrative delivery exceeds the personal Gmail attachment limit but fits comfortably within HeftySend’s free transfer allowance.

Upload the agreed finished JPEGs and send one link. Give them clear names, such as OakHouse_01_FINAL.jpg, and tell the client whether they are the print files, website versions or both. If you supply two export sizes, label the sets clearly so the client does not accidentally use a small web image for print.

You do not have to lower the dimensions or JPEG quality merely to fit an email attachment. A smaller export may be useful when the client specifically needs one, but it should be a deliberate deliverable. For camera originals and editing sidecars, use our separate RAW photo delivery guide.

What should the email with your download link say?

Adapt this message and replace the bracketed details before sending:

Subject: Oak House final photographs

Here are the 40 approved photographs: [paste the completed HeftySend link]. Please download the files marked FINAL for the agreed use. The transfer expires at [copy the expiry shown on the download page]. Please save the files before then and reply once you have collected everything. Let me know if any filename or photograph is missing.

For a free transfer, arrange the upload when the recipient can collect within three days. If they are away, choose a later send or a plan with enough availability. Keep your own project copy after delivery.

Should you use an attachment, cloud sharing or a transfer link?

• An ordinary attachment is convenient for a small file that fits both mail systems and their security rules.
• A shared cloud document can suit ongoing editing. Review who can open it and whether the recipient needs a particular account. Gmail checks access when you insert a Drive file; work and school policies may restrict sharing. See Google Help, Send Google Drive attachments in Gmail.
• A HeftySend transfer suits a defined delivery of finished files. Your recipient gets a download page with supported previews and can collect files without creating an account. The files stay outside the email itself.

This older tutorial from digitidea demonstrates Gmail’s attachment to Drive link workflow. It helps explain why an email can contain a link instead of carrying the file. Use the current Google guidance above for limits and sharing settings; the video is not a HeftySend demonstration.

When does a paid HeftySend plan help?

Upgrade when you need a larger delivery, a longer collection window or a download page styled for your business. Premium currently supports up to 1 TB per transfer with up to 365 days of availability using included storage. Paid custom download pages offer templates, colours, backgrounds and text. Check the current plan details, including branding removal, before choosing.

HeftySend does not charge for bandwidth usage. If you connect your own storage on a paid plan, that provider may charge separately for storage, requests and data delivery. Those costs are distinct from HeftySend’s bandwidth policy. See our own storage guide.

Frequently asked questions

Will a ZIP always make my files small enough for email?

No. A ZIP can package files together, but already compressed photographs and videos may not shrink much. Check the resulting size. If it still exceeds the attachment limit, send a link instead.

What if the recipient’s organisation blocks transfer links?

Ask for its approved delivery method or contact person. Do not keep disguising links or filenames. A company restriction is different from an email size limit.

Does sending the email mean the files have been downloaded?

No. It means you have sent the message containing the link. Ask the recipient to confirm that they have downloaded and checked the complete delivery.

Can I resend the same link to someone who missed the email?

Yes, while the link remains available and the person is an intended recipient. Confirm the expiry first. If it has expired, arrange a fresh delivery from your retained originals.

Should I paste a preview image into the email as well?

You can include a small identification image when useful, but label it as a preview. Tell the recipient to download the finished files from the link, rather than saving that small image for publication.

Why does a shared cloud file ask my client for permission?

The link may be restricted to particular accounts or an organisation. Check its sharing settings with the file owner. A visible link is not proof that every recipient has permission to open it.

Ready to send the finished file?

Keep the version your recipient needs, upload it to HeftySend and email one clear download link. Start free, then choose more capacity, time or customisation when the project calls for it.