Klaviyo
klaviyo.com
Email and SMS built around e-commerce data
from $20/moFree plan
Mails.ai
Cold email infrastructure with AI sequencing
Free trialEmail MarketingSince 2025
Custom pricingVisit mails.ai
What Mails.ai is
Outbound email platform combining mailbox warm-up, deliverability monitoring and AI-assisted sequence writing, aimed at teams running cold campaigns at volume.
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