11 best email sequence tools for sales teams in 2026 - Guideflow Blog

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1. Deliverability infrastructure: domain warm-up, sender rotation across multiple mailboxes, custom tracking domains, SPF, DKIM, and DMARC authentication standards. “CRM sync that logs activity back to the right contact and opportunity without double entry.” Sequence analytics with open, reply, bounce, and meeting-booked rates at the step level.

   In CRM and sequencer synchronization

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