01
Keep the source attached
Every campaign retains its source bulk job and file name, so the audience has a visible verification trail.
Product / Email campaigns
Verified audiences, delivered with Resend
Go from a clean list to a live campaign.
Select recipients from available bulk verification results, personalize a plain-text message, and send through one or more connected Resend accounts without leaving MailTooth.
- Verified-result audiences
- Recipient personalization
- Single or round-robin delivery
Close the verification-to-send gap
Do not lose the value of a clean list during another export and import.
Moving a verified file between tools adds stale copies, mapping mistakes, and another place to forget why an address was approved. Campaigns keep audience review and delivery next to the verification job that produced the data.
02
Review before sending
Choose the verified set or carefully review all sendable results, then send to every eligible record or a hand-picked selection.
03
Use your own sender
Connect Resend with a sending-only API key and an approved From address instead of sharing a general-purpose credential.
A direct path for permission-based outreach
Use campaigns when the audience is already a bounded, verified list.
The workflow is designed for thoughtful sends where recipient choice, sender identity, and visible execution status matter.
Product announcements
Send a focused update to verified customers or subscribers with a clear reply-to address.
Event follow-ups
Review registrants, correct missing names, and personalize a post-event message from one workspace.
Sales outreach
Select the relevant verified prospects from a larger result set before a bounded outbound send.
Agency delivery
Keep separate Resend accounts recognizable and choose the right sender for each client campaign.
Audience reactivation
Reverify an older file, use the clean result set, and monitor provider acceptance as the campaign runs.
Multi-account routing
Distribute recipients deterministically across selected Resend accounts when your delivery plan calls for it.
Verify, review, deliver
One deliberate path from source file to provider acceptance.
The campaign builder keeps audience decisions separate from composition and delivery configuration.
- 01
Connect Resend and verify a list
Add one or more named Resend accounts, then run a bulk verification job with downloadable results.
- 02
Choose and personalize the audience
Select the result set, review recipients across pages, correct names, and compose the subject and message with optional variables.
- 03
Confirm permission and launch
Choose single-account or round-robin delivery, confirm your lawful basis to contact the audience, and queue up to 10,000 recipients.
Purposeful campaign controls
The controls needed to send a verified audience responsibly.
Campaigns favor explicit recipient and routing decisions over opaque automation, while preserving a durable execution summary.
Verified or reviewed audiences
Default to the safest verified-only set, or inspect risky and unknown results before selecting any other sendable record.
Selection across pages
Pick individual recipients from large previews without losing earlier selections as you move through the audience.
Template variables
Personalize the subject and message with {{first_name}}, {{last_name}}, and {{email}}.
Multiple Resend accounts
Store named connections with masked, encrypted credentials and select the sender configuration per campaign.
Deterministic round robin
Spread recipients evenly across at least two selected accounts while recording the route used for each send.
Live execution summary
Track queued, processing, completed, partial, or failed status with accepted and failed recipient counts.
Your first 100 credits are free
Turn verified results into a campaign without breaking the chain.
Start without a card. Choose the workflow and verification depth that match the decision in front of you.