Instantly
Cold email platform with unlimited inboxes, warmup, and deliverability tools.
4.7/ 5.0
instantly.aiAbout Instantly
Instantly is one of the two dominant cold email platforms (alongside Smartlead). Built for agencies and high-volume senders — unlimited mailboxes, native warmup network of 1M+ accounts, and a built-in lead database. Excellent deliverability when paired with proper inbox infrastructure.
Best For
Agencies and high-volume outbound teams
What we like
- Unlimited inboxes on growth plans
- Largest warmup network
- Built-in B2B lead database
Watch outs
- UI can feel cluttered
- Reply detection occasionally misclassifies
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