Engagement metrics play a significant role

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IP warming is similar to email warm-up, but it focuses on the sending server's address, also known as the IP address. When large email campaigns are sent from a new IP, deliverability can suffer without proper warming. Gradually increasing email volume allows the IP address to earn trust with mailbox providers.

Domain reputation measures how trustworthy a domain whatsapp number list appears over time. Poor practices like sending spam or frequent bounces hurt domain reputation. Consistent, positive mail activity strengthens reputation. A good domain and IP reputation make it more likely for emails to reach inboxes instead of junk folders.

IP and domain reputation go hand in hand. If either one is poor, deliverability drops. Regular activity, low bounce rates, and positive responses will build up the standing of both. In addition, authentic records like DKIM and SPF can help providers identify legitimate senders.

Gradual Volume Increase and Engagement Metrics
Raising the sending volume too quickly is a risk for any new sender. Email providers flag sudden spikes, which may block or filter messages. The best process is to grow volume slowly, sometimes using daily or weekly schedules. This approach allows time for trust to develop.