Several factors contribute to the reputation of an ESP. These include:
Deliverability Rates: High deliverability rates ensure that your emails land in the recipient's primary inbox rather than the spam folder. Compliance: Reputable ESPs comply with GDPR, CAN-SPAM, and other relevant regulations to protect user data and privacy. Security: They offer robust security features to safeguard your data and protect against phishing and other cyber threats. Customer Support: Quality customer support can resolve issues quickly and efficiently, ensuring minimal disruption to your campaigns.