for mailchimp

Drop a cap on that email GIF.

Mailchimp tolerates up to 1 mb in email body, but every Windows Outlook subscriber will see a single static frame. Design backwards from there.

outlook desktop on windows shows only frame 1 of any gif · mailchimp recommends under 1 mb total · oversized gifs blow load times and trigger spam filters · most encoders compose for the loop, not for the first-frame fallback

gifcap. gifcap binary-searches quality to fit under 1 mb. set the start frame deliberately so outlook readers see your message. drag-drop, no upload step.

axis	online compressors / mailchimp's built-in	gifcap
holds under 1 mb at watchable quality	often dithered to fit	gifski per-frame palettes
first-frame composition	trims at random	set start frame deliberately
workflow	upload, wait, download, repeat	drag-drop local
outlook fallback notes	no guidance	caption reminders in app
cost	free	free tier; pro $29 lifetime

runs offline. no upload bar. same gifski engine as gifski.app. free tier covers 90% of use cases.

How gifcap solves this — in detail

Email is the cruelest GIF target because the rendering split is 50/50: half your subscribers see the animation, the other half (Outlook desktop on Windows) see only frame 1. Most encoders ignore this — they optimize for the loop, leaving you with a meaningless static image for half the audience.

gifcap's workflow encourages frame-1-as-message thinking. The trim panel lets you pick which frame becomes the static fallback, and the binary-search size cap holds quality at the strict 1 MB Mailchimp recommendation. gifski's per-frame palette keeps text crisp at email-friendly dimensions (typically 600 px wide).

For B2B campaigns, the win is unsubscribe-rate reduction. A static-but-coherent first frame costs nothing to ship; an unintelligible static frame costs subscribers. gifcap doesn't add a feature for this — it gives you the deterministic file size and frame control to build the right composition by default.

Email clients — GIF rendering matrix

Mailchimp recommended size: under 1 MB
Outlook desktop on Windows: shows only frame 1 (static) — ~25% of opens
Outlook web / Outlook mobile: full animation supported
Apple Mail (macOS, iOS): full animation supported
Gmail (web, mobile): full animation supported
Yahoo / AOL: animation supported; spam-filter weight on files >2 MB
Mailchimp content block max width: 600–1320 px

download free see pricing — $29 lifetime 18 mb installer · signed · windows 10/11

FAQ

why does my mailchimp gif show only one frame in outlook?

outlook desktop on windows (still ~25% of email opens in 2026) doesn't render animated gif — it shows only the first frame. mailchimp documents this limitation. design the first frame to communicate your message standalone.

what's the recommended gif size for email?

mailchimp recommends under 1 mb. above that, load times stretch and some clients (yahoo, AOL) start flagging the email. ideally aim for under 500 kb for fast preview rendering.

how do i make a gif for a mailchimp campaign?

export your video at 600–1320 px wide (mailchimp's max content width), set gifcap's size cap to 500 kb–1 mb, set the start frame so it stands alone. drop the resulting gif into mailchimp's content block.

do animated gifs work in apple mail and gmail?

yes — apple mail, gmail web, gmail mobile, and outlook web all play animated gifs. only outlook desktop on windows shows the static first frame.

last updated 2026-04-22 by alain · alain@gamutcreative.tv