Folderly FramePre-send checkpointFolderly.com
Email on Acid alternative

Move your pre-send checks into a Folderly workflow.

Frame combines practical render previews, compatibility warnings, and a deliverability verdict for arbitrary email HTML.

Paste HTML See breakage Check land risk
Early access

Bring a campaign

Get the first build and help lock the client matrix that replaces your old workflow.

Email on Acid workflow

What you keep

  • Bring existing HTML assets without a proprietary export.
  • Check the clients and device widths that matter most.
  • Find Outlook and Gmail issues before a send.
  • Keep reports honest with method labels on every preview.
Frame

What changes

  • Fidelity labels stay visible on every preview.
  • Compatibility and deliverability appear in the same report.
  • Bulk HTML checks dedupe repeated letters before billing.
  • Raw HTML is ephemeral by default and never used for training.