How to Schedule Instagram Collab Posts

Step by step

1. 1

   Agree on content and timing with your collaborator in advance

   Before opening the composer, confirm the final caption, creative assets, and target publish time with your co-author. Because the Collab invite goes out after the post publishes — not before — both parties need to know the go-live window so the collaborator can accept the invite promptly. An unaccepted invite means the post does not appear on the collaborator's profile grid, defeating the co-marketing purpose. Set a calendar reminder for both of you around the scheduled publish time.

   Tip: Share a draft of the caption in a shared doc or DM thread before scheduling so your collaborator can review it before it goes live — you cannot send the Collab invite from a draft.

2. 2

   Prepare your creative assets

   Instagram Collab posts support feed images, carousels (up to 20 items as of June 2026 — confirm the current count in the composer), and Reels. For Reels, export a clean 9:16 vertical video (1080 × 1920 px, MP4 or MOV) from your editor without any platform watermark burned in. For feed posts, the 4:5 portrait ratio (1080 × 1350 px) performs well on the grid. Keep key visual elements away from the bottom strip and right rail where Instagram overlays the like/share buttons.

   Tip: For a carousel Collab, check the /sizes/instagram-carousel-size page for current per-slide specs and the safe-zone guide — dimensions have shifted with feed layout updates.

3. 3

   Open SocialKit and compose the post for Instagram

   Create a new post in SocialKit and select your Instagram account as the destination. Upload your image, carousel slides, or Reel file. Write the agreed caption — Instagram shows roughly the first 125 characters above the fold in the feed, so lead with your clearest hook. Keep hashtags to five or fewer: Instagram has been rolling out a five-hashtag cap (counted across caption and first comment) since December 2025, so prioritise the most relevant tags. Do not add the collaborator's @mention as a Collab invite in this step — that invite is handled natively post-publish.

4. 4

   Add a first comment with additional hashtags (optional)

   If you want more hashtags without cluttering the caption, use SocialKit's first-comment scheduling feature to post a comment automatically at publish time. This keeps the caption clean while still associating the post with discovery keywords. Remember that as of June 2026, Instagram counts hashtags across the caption and first comment toward its cap — so budget accordingly across both fields rather than treating them as independent allowances.

   Tip: The /tools/hashtag-counter tool lets you count tags across caption and comment draft before you schedule, so you stay within current limits.

5. 5

   Set a publish time and confirm the auto-publish path

   Pick a specific date and time, or use SocialKit's best-time suggestions based on your audience's activity data. For Collab posts specifically, aim for a time when your collaborator is available to receive and accept the invite quickly — typically within the first hour of the post going live. Check the composer's publish-path indicator: Business and Creator accounts linked to a Facebook Page auto-publish via the Instagram Content Publishing API (no phone needed); personal accounts and some Creator accounts receive a push notification to finish manually. Confirm which path applies before scheduling.

   Tip: For best-time starting points for your audience, see the /best-time-to-post/instagram page — but cross-check against your own Instagram Insights, since audience behavior varies significantly by niche.

6. 6

   Schedule the post and confirm it publishes

   Confirm the schedule in SocialKit. At the set time, the post goes live on your Instagram account (auto-published for Business/Creator, or via notification for other account types). Check your Instagram notifications to confirm the post is visible on your profile before moving to the invite step. If you are using notification publishing, make sure you or a team member is available at the scheduled time to complete the post in the Instagram app.

7. 7

   Send the Collab invite natively in the Instagram app

   Once the post is live on your profile, open it in the Instagram app and tap the three-dot menu (top right), then select "Edit." Scroll down to find the "Add Collaborator" option (labelled "Invite Collaborator" in some versions of the app as of June 2026 — the exact label may vary). Enter your collaborator's Instagram username and send the invite. Your collaborator will receive a notification and must accept; once accepted, the post appears on both profiles and the likes and comments pool together. If the post is a Reel, the same Edit > Add Collaborator path applies.

   Tip: The Add Collaborator option is available on feed posts and Reels. As of June 2026, Instagram Stories do not support the Collab co-author feature — Collab is limited to feed posts and Reels.

8. 8

   Schedule coordinated teaser and announcement posts

   Back in SocialKit, add the teaser and post-launch announcement posts to the same content calendar session. Common patterns: a countdown Story (scheduled via notification) posted 24 hours before go-live; a feed post on your collaborator's account at the same time (scheduled separately in their own SocialKit workspace if they use one); and a follow-up story linking to the Collab post once it is live. Having the full campaign mapped in one calendar view makes it easier to spot timing gaps or overlaps before anything publishes.

Best practices

• Coordinate the exact publish window with your collaborator before scheduling so they are ready to accept the invite quickly — posts that sit without the co-author accepting look incomplete to audiences who see them in the feed.
• Agree on caption copy, hashtags, and visual assets before scheduling; editing the post after the Collab invite has been accepted is possible but adds friction and requires both parties to see the change.
• Schedule your teaser content — Stories, a pre-launch announcement post — in the same SocialKit calendar session so the full co-marketing timeline is visible in one view.
• Keep captions under five hashtags as of June 2026 and treat the first-comment hashtag allowance as part of the same budget rather than a separate pool.
• For Reels Collabs, export a clean master file (no watermark, no burned-in platform UI) and upload it directly — Instagram has stated that visibly recycled clips are made less discoverable.
• After the Collab is live and the invite accepted, note the post performance in both accounts' analytics to measure the co-marketing lift — SocialKit's analytics panel (available on every plan) tracks reach and engagement for your side of the post.

Good to know

Do it in SocialKit