Personalized Mailer

First name auto-extracted from each email. Recipient's domain name (no TLD) is injected into the subject via {domain}. First paragraph is AI-rewritten. Optional PDF attached natively. Sends via Resend in batches of 100.

Progress →

Sender name (signature)

From email

Sending as —

Subject (use {domain})

Recipients (0 valid)

Upload CSVCSV should have an "email" column.

Message body (first paragraph will be rewritten)

Separate paragraphs with a blank line.

Rewrite first paragraph per recipient

On by default. Uses the cheap Gemini 2.5 Flash Lite model, so ~12,000 rewrites stay inexpensive. Turn off to share a single rewrite across all recipients.

Auto-switch From domain on failures

If a batch's failure rate crosses the threshold — or the provider returns a domain/reputation/bounce error — the mailer marks that domain unhealthy and retries with the next verified Resend domain.

Failure threshold:% of a batch0 verified domains available

Cooldown before reusing a domain:minutes (0 = disabled)

Attach PDF or SVG (optional, ≤15MB)

Hyperlink button (optional)

Adds a clickable button below the message body. .html links and any URL are fine. Leave blank to skip.

Public link origin

Origin used to build the gated /go link recipients open. Must be your published URL (or a custom domain) — preview URLs require a Lovable login and won't work for recipients.

You'll be taken to the progress page to start the send.