Most mail providers cap individual attachments around 25MB total, but plenty of recipients' inboxes — and some corporate filters — choke well before that. Here's a fast, reliable way under 1MB.
Modern phone photos routinely land at 3–8MB each straight out of the camera. Attach a handful to one email and you're well past what many recipients' inboxes or spam filters are comfortable with — some corporate mail servers silently strip or bounce large attachments with no warning to the sender.
Open Squeezr and drop in your photo (or a whole batch — email attachments are a common one to send several at once).
Set Output format to JPG if it isn't already.
Set quality to around 70% as a starting point.
Check the live before/after size readout — if it's still over 1MB, lower the quality slider a bit further, or turn on Resize and reduce the pixel dimensions.
Download and attach — for a batch, grab the whole thing as one .zip.
Skip the manual math — open Squeezr with this preset already dialed in.
Open Squeezr with an email-ready preset →A JPG under 1MB downloads instantly even on a weak mobile connection, and reliably clears the attachment-size limits most corporate mail gateways enforce. Since a photo is rarely viewed at full resolution inside an email client anyway, you can usually compress fairly aggressively with no visible loss.
Very high-resolution photos (12+ megapixels) sometimes can't get under 1MB from quality reduction alone without looking noticeably soft. In that case, turn on Resize and bring the width down to around 2000px — that alone often halves the file size with no visible difference in an email client, since most screens can't show more detail than that anyway.