Big files slow everything down, they are slower to upload, slower to download, and bloat your database. Smaller emails have a higher delivery rate, open faster and generally provide a better user experience for everyone.
In addition, many email servers and clients limit the size of attachments that are allowed, if the attachments you send are too big, they will be rejected. In addition, some email services such as Microsoft Office and Google GMail monitor the total size of emails you send over a period of time (Example: 150MB in 5 minutes for a single account) and large file attachments can slow your ability to send emails.
Here are a number of tips you can do reduce the size of your email and the documents you attach to them.
Reduce the size of images.
When you attach or embed images into an email, consider the following tips to reduce their size, even without losing quality.
Tip | Quality | Notes |
JPEG Compression Level | Lossy | There are a range of compression levels for JPEG files, consider a lower value like Medium when saving JPEG files. |
PNG Compression | Lossless | PNG files can be compressed without zero quality loss using a tool like https://tinypng.com |
Reducing the size of attachments.
Smaller attachments download faster and have a higher delivery rate. Consider these tips to reduce the size of attachments.
When you attach or embed images into an email, consider the following tips to reduce their size, even without losing quality.
Tip | Quality | Notes |
Zip It | Lossless | Consider compressing your files and configuring the ZIP compress to use Ultra mode for the most savings. Microsoft Windows has the ability to ZIP files directly learn more here. |
Use a link! | Lossless | This is by far the best option. Instead of sending an attachment, send a link! Consider uploading your large file to a service like DropBox, your Company Website or other online location where you can monitor the downloads and completely avoid any email size issues. |
PDF Compression | Lossy | Did you know that PDFs are made up to text and images? The contents of the PDF can be compressed using different formats and levels of compression. Using a tool like Adobe Acrobat you can easily compress files by 50% or more! Adobe offers a free PDF compression tool here:
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