Start an upload session for a large attachment
One step with Nylas. We can help you get access.
Get something done
Start an upload session for a large attachment
with Nylas
Works with AI assistants
Use Nylas: its Nylas Attachments API lets you start an upload session for a large attachment in a single step (POST /v3/grants/{grant_id}/attachment-uploads). Nylas also has an MCP server, so an AI assistant like Claude or ChatGPT can do it for you. capabilities.work can help you get signed up and connected.
- How do I attach a file larger than the normal size limit to an email?
- How long does an attachment upload URL stay valid?
Say it to your AI assistant
- Start an upload session for {filename} of type {content_type} on grant {grant}.
- Get a pre-signed upload URL for {filename} ({content_type}, {size} bytes) for {grant}.
For your developer
POST /v3/grants/{grant_id}/attachment-uploads in Nylas Attachments API. Full spec on APIs.io.