Home Help Center Email Marketing Service Email Campaigns Understanding autowarmup in Sendigram
A short instruction to start your email marketing journey
How to start and complete onboarding Tracking your onboarding progress: a step-by-step guide Claiming your onboarding reward and using the coupon code What happens if you skip or end onboarding early
Email & contact metrics Understanding email performance metrics: Sent, Deliverability, Open rate, Click rate Why the number of sent emails doesn't match your contact list Working with recent lists
Creating an account on Sendigram Recovering your Sendigram account password Changing your Sendigram password Changing your account login (email address) Deleting your account
Plans differences Email Plan Guide Purchasing & renewing a package Auto top-up feature Switching between different plans Unused package credits Using a discount coupon Refunds
Understanding domain statuses: Verified, Processing, Unverified Managing sending domains Why DNS records matter for email deliverability Adding & verifying DNS records (SPF, DKIM, DMARC) Checking & resolving domain blacklist issues Managing sender email addresses Sender address requirements and best practices What to do if a sender address is in use by active campaigns Understanding shared vs. dedicated IP addresses Connecting or disconnecting a domain to/from an IP address Buying & managing dedicated IP addresses
User roles & statuses User status explained: active and deleted users How to add a new user: user invitations and registration Managing user permissions and access rights Default permissions for additional users Deleting users Transferring admin rights to another user What happens after admin rights are transferred? What happens when permissions are disabled for a user?
Adding & editing contacts Technical Requirements for Your Contact List Fields Adjusting contact list settings Managing contact groups Creating & managing segments Creating & managing groups Managing contact attributes Adding and managing custom fields Adding and managing tags
How to create your first email campaign Campaign card overview: General, Contacts, Email template, Scheduler Naming and renaming campaigns Understanding campaign statuses: Waiting, In progress, Paused, Finished Saving progress and navigating between campaign blocks How to set up the sender email address and name Managing reply-to addresses in campaigns Selecting and managing IP addresses for sending How to select recipients: Contacts, Groups, Segments Excluding contacts and groups from a campaign Understanding contact limits and subscription packages What to do if you exceed your email sending limit Validating contacts before sending: Email Checker explained Choosing and editing email templates for campaigns Uploading custom HTML Writing effective subjects and preheaders Personalizing Your Subject Lines and Preheaders Adding and managing UTM parameters Scheduling campaigns: send now or later Setting up delivery dates, times, and days of the week How to calculate and adjust sending volume over time Managing dedicated IP expiration and renewal Understanding autowarmup in Sendigram How to preview and test your campaign Managing and editing your test email group Using the campaign calendar: viewing, filtering, and creating campaigns Understanding campaign statuses: Active, Scheduled, Completed Viewing campaign details and quick actions from the calendar Navigating the campaign list: columns and filters Searching and filtering campaigns by name, date, and status Campaign card: overview, timeline, and audience How to pause, continue, or delete a campaign Understanding campaign statuses: Planned, Active, Paused, Finished Campaign performance & analytics Using heatmaps to analyze email engagement
General email performance Comparing campaign variants Ratings and trends Comparing your results with Industry benchmarks How multilevel sorting works Monitoring your email marketing performance
What is Sendigram Email Builder How to create a new template How to manage your templates list Template Tags

Understanding autowarmup in Sendigram

Email autowarmup is an automated process designed to gradually increase the volume of emails sent from a new or rarely used email address or domain. Its primary goal is to build a positive sender reputation and ensure your messages land in the "Inbox" rather than the "Spam" folder.

Why Autowarmup is Essential

Starting a mass mailing campaign from a fresh domain can often lead to immediate blocks. Here is why Sendigram uses an automated approach:

  • Avoid Spam Filters: Email providers are suspicious of new accounts that suddenly send thousands of emails. Warmup helps you earn their trust.
  • Build Reputation Naturally: Our system mimics organic, human-like activity by eliminating suspicious spikes in volume that could damage your reputation.
  • Maximize Engagement: A "warmed" address reaches the inbox more often, leading to higher open rates and better campaign results.
  • Protect Your Investment: Proper warmup ensures that your marketing efforts and lead generation costs aren't wasted due to low deliverability.

How it Works Behind the Scenes

The system monitors every unique pair of IP address and Domain. It tracks real-time data to decide whether to speed up, slow down, or pause your sending to keep your reputation safe.

Key Metrics Tracked:

  • Delivered & Sent: The volume of your traffic.
  • Opens: A primary indicator of positive engagement.
  • Hard Bounces: Invalid email addresses that hurt your score.
  • Spam Complaints: The most "expensive" metric; high complaints will stop a warmup immediately.

Warmup Statuses

Your domain will always be in one of the following states:

Status What it means
Normal Everything is on track. Your daily limit can grow based on good performance.
Downgrade A "yellow flag." Your limits are cut by 50% due to a slight dip in metrics.
Incident A "red flag." Sending is paused for 48 hours to prevent permanent domain damage.
Restoring A 7-day probation period after an incident where limits are fixed at a minimum.
DEAD The domain has a critically poor reputation and is excluded from further sending.

The Growth Engine: How Limits Increase

If your domain is healthy, the system recalculates your Daily Limit once every 24 hours. It uses a "Warmup Score" based on your performance over the last three days:

$$warmupScore = (bounceScore \times 40) + (complaintScore \times 40) + (openScore \times 20)$$

  • Score > 80: Your sending speed increases by 10%.
  • Score < 60: Your speed is reduced by 10%.
  • Score < 40: Your speed is reduced by 30%.

Note: The system starts at a minimum of 100 emails per day and can scale up to 100,000 emails per day as your reputation grows.

Safety Features

1. Incident Detection

Every 15 minutes, the system scans for critical issues. An incident is triggered if your spam complaints exceed 0.3% or your hard bounces exceed 4% in a single day. If this happens, your sending pauses for a 48-hour "cooling off" period.

2. The "One Strike" Rule in Restoration

After an incident, you enter a 7-day Restoring phase. Be careful: if a second incident occurs during these 7 days, the domain is marked as DEAD and cannot be recovered within the system.

3. Automatic Downgrades

If your yesterday's stats show complaints over 0.1% or bounces over 2%, the system automatically triggers a DOWNGRADE. This immediately cuts your daily limit in half and resets your growth speed to 1 until metrics improve.

What You Need to Do

The best part about Sendigram’s autowarmup is that it is automatic. As a user, your main focus should be:

  1. Sending Quality Content: High engagement (opens and clicks) helps the system increase your limits faster.
  2. Maintaining Clean Lists: High bounce rates will trigger "Downgrade" or "Incident" modes, slowing down your progress.

By following these simple guidelines, Sendigram will safely scale your outreach to thousands of emails while keeping your domain's reputation pristine.

Still have questions?
Contact Us