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Guidelines & Best Practices

Email Sending Guidelines

To maintain high deliverability and protect the reputation of Sendvrel's infrastructure, all senders must adhere to the following strict requirements and best practices.

Sending Requirements

  • Verified Domains: You may only send email from domains you have verified in the Sendvrel dashboard.
  • SPF Setup: Sender Policy Framework (SPF) records must be configured to authorize Sendvrel IPs.
  • DKIM Setup: DomainKeys Identified Mail (DKIM) signatures are mandatory for all outbound traffic.
  • DMARC Setup: A DMARC policy (at least `p=none`) must be published for your sending domain.

Sender Reputation & List Hygiene

  • Bounce Rate Management: Maintain a hard bounce rate below 3%. Remove invalid addresses immediately.
  • Complaint Handling: Spam complaint rates must remain below 0.1%. Monitor feedback loops actively.
  • Unsubscribes: Include clear unsubscribe links in all marketing emails and process requests within 24 hours.

Strict Restrictions

  • No Purchased Lists: Buying, renting, or leasing email lists is strictly prohibited.
  • No Scraping: Using automated tools to scrape emails from websites is prohibited.
  • No Spam: Unsolicited bulk email will result in immediate and permanent account suspension.

Warm-up Best Practices

If you are sending from a new domain or IP, you must gradually build trust with Inbox Providers (Gmail, Yahoo, Outlook).

  • Start by sending fewer than 100 emails per day.
  • Increase volume by no more than 20% to 50% every few days.
  • Send to your most engaged users first (users who open and click).
  • Pause volume increases if you notice rising bounce or deferral rates.

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