Own your audience. Keep it clean.
Manage subscribers, lists, tags, and segments inside a platform that respects suppression and isolates audiences per workspace. Your data, your lists, your rules.
- CSV & bulk upload
- ImportCSV & bulk upload
- Hosted & embed
- FormsHosted & embed
- Real-time push
- APIReal-time push
- Per workspace
- ScopedPer workspace
No lead database. You bring the audience. Mailers.io manages it.
Three ways in, one source of truth.
All three methods land in the same subscriber object, respect the same suppression layer, and feed the same segmentation engine.
Import
CSV or Excel upload with column mapping. Duplicate detection and suppression cross-check on ingest.
- Column mapping
- De-dup on email
- Suppression check
- Ingest audit log
Forms
Hosted and embeddable forms capture subscribers from your sites, landing pages, and partner surfaces.
- Hosted URL
- Embed snippet
- Double opt-in
- List routing
API
Push subscribers programmatically from your product. Idempotent upserts, field validation, event emission.
- REST upsert
- Bulk endpoint
- Webhook confirmation
- Rate-limited
Slice audiences by what actually matters.
Tags
Simple, fast labels for quick filtering — perfect for sources, campaigns, or lifecycle states.
Custom fields
Strings, numbers, booleans, dates. Store the subscriber context your sends actually need.
Dynamic segments
Composable conditions across fields, tags, and behavior. Segments update as subscribers change.
Static lists
Fixed snapshots for campaigns that should not change after import.
Suppression-aware
Suppressed contacts are silently excluded from every list, segment, and send — no extra work.
Consent + source tracking
Every subscriber carries source and consent metadata for compliance and list hygiene.
What teams ask about their audience.
Bring your audience. Keep it under control.
Import, capture, and push subscribers into a structured audience layer that stays clean, segmented, and suppression-safe.