Cold email sending & deliverability

Flowfiy vs Instantly

Instantly is a cold-email sending and deliverability tool (mailbox rotation and warmup). Flowfiy is a full pipeline that also finds, researches, qualifies, and writes the emails.

Instantly is built for sending volume: it rotates inboxes, warms them up, and helps cold email land. But it assumes you already have a list and copy — it doesn't find leads, research them, or write personalized emails for you.

With Flowfiy you describe the leads you want in plain English; it finds matching businesses, researches each company, scores them 0–100, and writes a personalized email per lead — then sends from your own Gmail after review.

FeatureFlowfiyInstantly
Describe-your-leads (plain-English) targeting
Condition-based targeting (e.g. shops with no website)
AI company research per lead
AI qualification scoring (0–100)
AI-written personalized emailsBasic AI assist
Mailbox warmup / rotationSends from your Gmail
Managed AI & data (no API keys)

The verdict

Use Instantly if you only need sending infrastructure for an existing list. Choose Flowfiy if you want the whole motion — from finding leads to writing the emails — done by AI.

Try Flowfiy