For e-commerce brandsFree during beta

Social media scheduling for e-commerce brands

Your social calendar is also your launch calendar — every drop, restock, and limited-edition collab is supposed to land on the same day on Instagram, TikTok, Pinterest, and email. Postmixr lets your social team work from the same calendar as your merch team without paying for an enterprise plan to do it.

What changes with Postmixr

Three concrete pains and the Postmixr behavior that replaces them.

Launch days require posting to four platforms within the same hour, and one channel always misses because someone forgot to swap aspect ratios.

Schedule a single launch package across Instagram, TikTok, Pinterest, and Facebook. Postmixr resizes media and adapts captions to each platform automatically.

User-generated content sits in DMs, Drive folders, and Slack threads — by the time you find it again, the trend has moved on.

Centralize UGC, product photography, and lifestyle assets in a workspace media library every editor can search.

You see total engagement in each platform app, but you cannot tell which post drove yesterday's spike in checkouts.

Tag every link with a UTM in one click. Analytics ties impressions, engagement, and link clicks back to the specific post that drove them.

Launch day across every channel

One launch package, four platforms, every post tagged with a campaign UTM before it ships.

Queue · this weekLive
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InstagramDrop day 9:00 AM

Spring collection live. Carousel + Reel + Story link sticker.

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TikTokDrop day 12:00 PM

Founder unboxing, 30 sec vertical cut. utm_source=tiktok.

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PinterestDrop day 3:00 PM

Product pin set (2:3). utm_campaign=spring_2026_drop.

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InstagramDrop day 7:00 PM

Sold-out tease teasing restock waitlist. Link tagged.

Drop content here to schedule
Calendar view

Same posts on a two-week grid. Drag a draft to a new day, the schedule updates.

Features that matter most

Of everything Postmixr ships, these are the capabilities this audience reaches for first.

Post to every platform at once

Connect Instagram, TikTok, X, LinkedIn, YouTube, Facebook, Threads, and Pinterest. Compose a post once and ship it everywhere, with each platform getting the right aspect ratio and character limit.

One asset library everyone can search

Photos, videos, and captions live in a workspace media library tagged by campaign, product, or guest. Find that hero image from last quarter without scrolling through Slack.

UTM-tagged links on every post

Tag outbound links with UTMs in one click before scheduling. Tie content back to signups, checkouts, or listens in GA4, Stripe, or your podcast host of choice.

Captions that fit every platform

Postmixr trims captions to platform limits, adapts hashtag blocks, splits long copy into X threads, and reformats LinkedIn posts with Unicode emphasis — all from one draft.

Analytics built in

See impressions, engagement, and link clicks per channel without exporting a CSV. Know which content is worth doubling down on and which idea quietly flopped.

Free tools that pair well

Use these utilities in your browser today — no signup required. They map to the same limits and formats Postmixr enforces when you schedule.

Launch day, on every platform, on time

Direct-to-consumer brands live and die on launch days. The product page goes live, the email blast hits, and social has to land in lockstep on Instagram, TikTok, Pinterest, and Facebook within the same hour. Doing this manually means four uploads, four time pickers, and at least one channel where someone forgot to swap the 1:1 crop for a 4:5 portrait at the last minute.

Postmixr schedules a single launch package across every connected platform at once. The composer adapts the caption to each network's character limit, the media is resized to the platform's recommended aspect ratio, and the link is tagged with the campaign UTM before it ships. When drop day arrives, the calendar publishes — your team is free to handle the inbox of "is it sold out yet?" instead of babysitting the scheduler.

  • Schedule across Instagram, TikTok, Pinterest, Facebook, and YouTube in one flow.
  • Auto-resize media per platform (1080×1350 for IG, 1080×1920 for TikTok, 1000×1500 for Pinterest).
  • Tag every outbound link with a campaign UTM before scheduling.

User-generated content, organized for the next launch

UGC is gold for DTC brands, but most of it ends up scattered across DMs, Drive folders, and Slack channels. By the time you need to resurface a creator's clip for the next campaign, the trend has moved on or the file has expired. Postmixr centralizes UGC in a workspace-level media library. Tag clips by campaign, creator, or product, and your editors can find the right asset in seconds instead of scrolling through three apps.

Pair this with usage-rights tracking — leave a note in the asset's comment thread about the license window so reposts never run past the agreement. When the same creator delivers a second clip three months later, the history is one search deep.

Attribution: which post actually drove the spike?

Platform analytics tell you what got engagement, not what got checkouts. The gap between "this TikTok hit 500k views" and "we sold out the SKU on Wednesday" is where most DTC marketing teams lose the thread. Postmixr closes the gap by tagging every outbound link with a UTM in one click. When a click hits the product page, GA4, Shopify, or whatever revenue tracker you use sees the campaign, source, and content — tied back to the specific post in Postmixr.

You can finally answer "did the founder unboxing on TikTok outsell the Pinterest pin set?" with data instead of vibes.

Restocks, drops, and recurring campaigns

Most DTC calendars are not one-shot launches — they are restocks, color drops, and limited collabs that recur every six to eight weeks. Postmixr lets you duplicate any scheduled post, re-time it, and re-tag the UTM in seconds. The captions, media, and hashtag blocks carry over so a restock takes ten minutes of editing instead of two hours of re-uploading.

For brands running an evergreen waitlist or pre-order list, set up a recurring queue that teases the next drop weekly. The queue keeps your audience warm between launches without consuming a full morning of your social manager's attention each week.

Keeping the social team and the merch team aligned

In most DTC brands, the social calendar lives separately from the launch calendar — and the result is the social team finding out about a restock the morning of, scrambling to ship a post by noon. Postmixr fixes this by making the social calendar the single source of truth your merch team can read. Share a read-only link with the merch lead, and the next drop has a social plan locked in before assets land in Drive.

Comment threads on each scheduled post double as the production handoff: photographer drops final assets in the thread, social manager swaps the placeholder, and the campaign ships at the time the merch team committed to externally. No more "can you push the post by two hours" Slack messages on launch day.

Frequently asked questions

Can Postmixr schedule a product drop across Instagram, TikTok, and Pinterest at once?

Yes. Compose the post once, attach the assets, and Postmixr publishes to each platform at the time you set. Image and video are resized per platform spec, captions adapt to character limits.

How do I track which post drove sales without leaving the scheduler?

Use the UTM builder to tag every outbound link before scheduling. Analytics shows clicks per post; tie those clicks to checkouts in Shopify, Stripe, or GA4 — wherever your revenue lives.

Where do user-generated assets live in Postmixr?

A shared media library at the workspace level. Tag UGC by campaign, creator, or product so your editors can resurface it for the next launch without hunting through DMs.

Can I schedule the same post to repeat for a restock?

Duplicate any scheduled post and re-time it — captions, media, and UTM tags carry over. Most brands queue restock teasers a week before drop day this way.

Does Postmixr handle Pinterest pin scheduling?

Yes, Pinterest is a supported platform. Schedule standard pins with the correct 2:3 aspect ratio (1000×1500) directly from the calendar.

Other teams using Postmixr

Browse how nearby audiences run their content calendar.

Launch day, on every platform, on time

Start free and queue your next drop across Instagram, TikTok, and Pinterest in under fifteen minutes. No enterprise sales call required.