Aged Domain Mailbox
PlainMailer Packages

Choose the mailbox capacity that fits your outreach.

Every package combines aged-domain mailbox access with managed warm-up, email-list cleaning, bounce handling and disciplined campaign sending. Choose a starting level and upgrade as your outreach requirements grow.

Compare Packages Explore Features
Package 1

Starter

Entry-level access for individuals beginning carefully managed email outreach.

  • 1 aged-domain mailbox
  • Managed mailbox preparation
  • 1 active campaign
  • Plain-text messages
  • Email-list cleaning
  • Bounce and unsubscribe tracking
  • Smart sending controls
Choose Starter
Package 2

Basic

Suitable for small businesses running regular, focused outreach campaigns.

  • 3 aged-domain mailboxes
  • Managed mailbox warm-up
  • 3 active campaigns
  • Text and HTML messages
  • Email-list cleaning
  • Bounce and suppression management
  • Recipient time-zone scheduling
Choose Basic
Most Popular

Growth

Designed for growing businesses managing several active outreach campaigns.

  • 5 aged-domain mailboxes
  • Standard managed warm-up
  • 10 active campaigns
  • Text and HTML messages
  • Attachments up to 2 MB
  • List, bounce and suppression management
  • Regional business-hour scheduling
Choose Growth
Package 4

Professional

Built for established outreach operations requiring greater mailbox and campaign capacity.

  • 10 aged-domain mailboxes
  • Advanced managed warm-up
  • 25 active campaigns
  • Text and HTML messages
  • Attachments up to 5 MB
  • Advanced bounce and suppression management
  • Regional and weekend scheduling controls
Choose Professional
Package 5

Agency

Expanded capacity for agencies and teams managing multiple outreach operations.

  • 25 aged-domain mailboxes
  • Advanced managed warm-up
  • Unlimited active campaigns
  • Text and HTML messages
  • Attachments up to 10 MB
  • Advanced list and delivery-event management
  • Multi-region campaign scheduling
Choose Agency
Smart Sending Controls Sending capacity is managed automatically according to mailbox readiness, account health, current campaign activity and email provider policies.
Mailbox Readiness Mailboxes follow the appropriate managed warm-up process before their full package capacity becomes available for active campaigns.
Responsible Use All packages require lawful, permission-based recipient lists. Purchased, scraped, harvested or unauthorized email lists are not permitted.
Package Questions

Frequently asked questions about PlainMailer packages

Learn how package selection, warmed mailbox access, list preparation and campaign capacity are managed.

Choose a package based on the number of warmed mailboxes you require, your expected campaign activity and the service features needed for your outreach. You can begin with a smaller package and request an upgrade as your requirements increase.

Package features may include warmed mailboxes on aged domains, mailbox warm-up, email-list cleaning, suppression checks, bounce handling, content refinement, campaign scheduling and delivery-event monitoring.

Eligible packages provide access to available mailboxes operating on aged domains. Mailboxes are assigned according to package level, warm-up status, account requirements and current service availability.

Yes. Packages that include multiple mailbox access allow users to assign several available warmed mailboxes to an individual campaign. Activity is distributed according to mailbox readiness and provider policies.

Yes. Users must upload their own lawful, permission-based email lists. Purchased, scraped, harvested or unauthorized recipient lists are not permitted.

PlainMailer performs basic email-format validation, duplicate detection and suppression checks before eligible contacts enter campaign queues. Previously unsubscribed, blocked or hard-bounced addresses are excluded.

Package capacity represents the service level available to an account, but actual sending activity is managed according to mailbox health, warm-up status, provider policies, campaign conditions and recipient-list quality.

You can request a package change when your campaign requirements increase or decrease. Additional mailbox capacity is subject to account eligibility, mailbox readiness and service availability.

Campaign sending begins after account activation, mailbox assignment and the required list-quality checks have been completed. Mailbox availability and readiness may affect the activation time.

No email service can guarantee delivery or inbox placement. Results depend on list quality, recipient engagement, message content, mailbox reputation, provider policies and other external factors.